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1024 vulnerabilities found for Red Hat Enterprise Linux 6 by Red Hat

CVE-2026-9064 (GCVE-0-2026-9064)

Vulnerability from nvd – Published: 2026-05-20 09:00 – Updated: 2026-05-20 13:41
VLAI?
Title
389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)
Summary
A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-9064 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2480093 issue-trackingx_refsource_REDHAT
Date Public ?
2026-05-20 07:30
Credits
Red Hat would like to thank Oleh Konko (1seal.org) for reporting this issue.
Show details on NVD website

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CVE-2026-42009 (GCVE-0-2026-42009)

Vulnerability from nvd – Published: 2026-05-18 12:44 – Updated: 2026-05-24 00:55
VLAI?
Title
Gnutls: gnutls: denial of service via dtls packet reordering vulnerability
Summary
A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.
CWE
  • CWE-475 - Undefined Behavior for Input to API
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:13274 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-42009 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2467279 issue-trackingx_refsource_REDHAT
Impacted products
Date Public ?
2026-04-29 00:00
Credits
Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue.
Show details on NVD website

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CVE-2026-42011 (GCVE-0-2026-42011)

Vulnerability from nvd – Published: 2026-05-07 13:51 – Updated: 2026-05-14 22:37
VLAI?
Title
Gnutls: gnutls: security bypass due to incorrect name constraint handling
Summary
A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
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https://access.redhat.com/security/cve/CVE-2026-42011 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2467437 issue-trackingx_refsource_REDHAT
Impacted products
Date Public ?
2026-04-29 00:00
Credits
Red Hat would like to thank Haruto Kimura (Stella) for reporting this issue.
Show details on NVD website

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CVE-2026-42010 (GCVE-0-2026-42010)

Vulnerability from nvd – Published: 2026-05-07 12:00 – Updated: 2026-05-14 22:14
VLAI?
Title
Gnutls: gnutls: authentication bypass via nul character in username
Summary
A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.
CWE
  • CWE-626 - Null Byte Interaction Error (Poison Null Byte)
Assigner
References
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https://bugzilla.redhat.com/show_bug.cgi?id=2467289 issue-trackingx_refsource_REDHAT
Impacted products
Date Public ?
2026-04-29 00:00
Credits
Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue.
Show details on NVD website

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CVE-2026-34002 (GCVE-0-2026-34002)

Vulnerability from nvd – Published: 2026-05-05 14:41 – Updated: 2026-05-06 14:27
VLAI?
Title
Xorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling
Summary
A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive information or cause the server to crash, resulting in a denial of service.
CWE
  • CWE-805 - Buffer Access with Incorrect Length Value
Assigner
References
URL Tags
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https://bugzilla.redhat.com/show_bug.cgi?id=2451112 issue-trackingx_refsource_REDHAT
Date Public ?
2026-05-05 14:01
Credits
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
Show details on NVD website

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CVE-2026-34000 (GCVE-0-2026-34000)

Vulnerability from nvd – Published: 2026-05-05 14:41 – Updated: 2026-05-20 02:35
VLAI?
Title
Xwayland: xorg: x.org x server: information disclosure and denial of service via out-of-bounds read in xkb geometry processing.
Summary
A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the `CheckSetGeom()` and `XkbAddGeomKeyAlias` functions, allows an attacker to read uninitialized or out-of-bounds memory. An attacker with a connection to the X11 server, either locally or remotely, can exploit this without user interaction. This could lead to the disclosure of memory contents or cause a denial of service by crashing the server.
CWE
Assigner
References
URL Tags
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https://access.redhat.com/security/cve/CVE-2026-34000 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451107 issue-trackingx_refsource_REDHAT
Impacted products
Date Public ?
2026-05-05 14:01
Credits
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
Show details on NVD website

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CVE-2026-33846 (GCVE-0-2026-33846)

Vulnerability from nvd – Published: 2026-05-04 09:08 – Updated: 2026-05-14 05:26
VLAI?
Title
Gnutls: gnutls: denial of service via heap buffer overflow in dtls handshake fragment reassembly
Summary
A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in merge_handshake_packet() where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the message_length field remains consistent across all fragments of the same logical message. An attacker can exploit this by sending crafted DTLS fragments with conflicting message_length values, causing the implementation to allocate a buffer based on a smaller initial fragment and subsequently write beyond its bounds using larger, inconsistent fragments. Because the merge operation does not enforce proper bounds checking against the allocated buffer size, this results in an out-of-bounds write on the heap. The vulnerability is remotely exploitable without authentication via the DTLS handshake path and can lead to application crashes or potential memory corruption.
CWE
  • CWE-130 - Improper Handling of Length Parameter Inconsistency
Assigner
References
URL Tags
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https://bugzilla.redhat.com/show_bug.cgi?id=2450625 issue-trackingx_refsource_REDHAT
Impacted products
Date Public ?
2026-05-04 08:53
Show details on NVD website

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CVE-2026-3833 (GCVE-0-2026-3833)

Vulnerability from nvd – Published: 2026-04-30 17:37 – Updated: 2026-05-04 12:49
VLAI?
Title
Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison
Summary
A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within `excludedSubtrees` or `permittedSubtrees`. A remote attacker can exploit this by crafting a leaf certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass where a certificate that should be rejected is instead accepted. This could result in unauthorized access or information disclosure.
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
Assigner
References
Impacted products
Vendor Product Version
Affected: 0 , < 3.8.13 (semver)
Red Hat Red Hat Hardened Images Unaffected: 3.8.13-1.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
Create a notification for this product.
Date Public ?
2026-04-30 17:26
Show details on NVD website

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CVE-2026-3832 (GCVE-0-2026-3832)

Vulnerability from nvd – Published: 2026-04-30 17:41 – Updated: 2026-05-18 20:22
VLAI?
Title
Gnutls: gnutls: security bypass allows acceptance of revoked server certificates via crafted ocsp response
Summary
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.
CWE
  • CWE-179 - Incorrect Behavior Order: Early Validation
Assigner
References
Impacted products
Vendor Product Version
Affected: 0 , < 3.8.13 (semver)
Red Hat Red Hat Hardened Images Unaffected: 3.8.13-1.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
Create a notification for this product.
Date Public ?
2026-04-30 17:29
Show details on NVD website

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CVE-2026-33845 (GCVE-0-2026-33845)

Vulnerability from nvd – Published: 2026-04-30 17:41 – Updated: 2026-05-14 05:26
VLAI?
Title
Gnutls: gnutls: denial of service via dtls zero-length fragment
Summary
A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service.
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
URL Tags
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https://bugzilla.redhat.com/show_bug.cgi?id=2450624 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Affected: 0 , < 3.8.13 (semver)
Red Hat Red Hat Hardened Images Unaffected: 3.8.13-1.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
Create a notification for this product.
Date Public ?
2026-04-30 17:28
Show details on NVD website

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CVE-2026-6732 (GCVE-0-2026-6732)

Vulnerability from nvd – Published: 2026-04-23 22:19 – Updated: 2026-04-30 17:11
VLAI?
Title
Libxml2: libxml2: denial of service via crafted xsd-validated document
Summary
A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
Impacted products
Date Public ?
2026-04-16 00:00
Credits
Red Hat would like to thank Ariel Schon for reporting this issue.
Show details on NVD website

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CVE-2026-2708 (GCVE-0-2026-2708)

Vulnerability from nvd – Published: 2026-04-23 21:51 – Updated: 2026-04-24 14:55
VLAI?
Title
Libsoup: libsoup: http request smuggling via duplicate content-length headers
Summary
A request smuggling vulnerability exists in libsoup's HTTP/1 header parsing logic. The soup_message_headers_append_common() function in libsoup/soup-message-headers.c unconditionally appends each header value without validating for duplicate or conflicting Content-Length fields. This allows an attacker to send HTTP requests containing multiple Content-Length headers with differing values.
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
Impacted products
Date Public ?
2026-02-18 20:13
Credits
Red Hat would like to thank Cavid for reporting this issue.
Show details on NVD website

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CVE-2026-34003 (GCVE-0-2026-34003)

Vulnerability from nvd – Published: 2026-04-23 14:54 – Updated: 2026-05-20 02:11
VLAI?
Title
Xorg: xwayland: x.org x server: information exposure and denial of service via out-of-bounds memory access
Summary
A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash, leading to a Denial of Service (DoS). In certain configurations, higher impact outcomes may be possible.
CWE
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:10739 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11352 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11369 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11388 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11656 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11692 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13414 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19125 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19342 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19343 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19344 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-34003 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451113 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.5-6.el10_1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-9.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-6.el9_7.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:23.2.7-6.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-33.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Date Public ?
2026-04-23 14:18
Credits
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
Show details on NVD website

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CVE-2026-34001 (GCVE-0-2026-34001)

Vulnerability from nvd – Published: 2026-04-23 14:54 – Updated: 2026-05-20 02:11
VLAI?
Title
Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption
Summary
A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially enabling memory corruption. This could result in a denial of service or further compromise of the system.
CWE
  • CWE-825 - Expired Pointer Dereference
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:10739 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11352 vendor-advisoryx_refsource_REDHAT
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https://access.redhat.com/errata/RHSA-2026:11388 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11656 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11692 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13414 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19125 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19342 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19343 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19344 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-34001 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451109 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.5-6.el10_1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-9.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-6.el9_7.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:23.2.7-6.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-33.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Date Public ?
2026-04-23 14:14
Credits
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
Show details on NVD website

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CVE-2026-33999 (GCVE-0-2026-33999)

Vulnerability from nvd – Published: 2026-04-23 14:53 – Updated: 2026-05-20 02:10
VLAI?
Title
Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling
Summary
A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:10739 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11352 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11369 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11388 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11656 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11692 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13414 vendor-advisoryx_refsource_REDHAT
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https://access.redhat.com/errata/RHSA-2026:19342 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19343 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19344 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-33999 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451106 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.5-6.el10_1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-9.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-6.el9_7.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:23.2.7-6.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-33.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Date Public ?
2026-04-23 14:11
Credits
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
Show details on NVD website

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CVE-2026-9064 (GCVE-0-2026-9064)

Vulnerability from cvelistv5 – Published: 2026-05-20 09:00 – Updated: 2026-05-20 13:41
VLAI?
Title
389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)
Summary
A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
URL Tags
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https://bugzilla.redhat.com/show_bug.cgi?id=2480093 issue-trackingx_refsource_REDHAT
Date Public ?
2026-05-20 07:30
Credits
Red Hat would like to thank Oleh Konko (1seal.org) for reporting this issue.
Show details on NVD website

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CVE-2026-42009 (GCVE-0-2026-42009)

Vulnerability from cvelistv5 – Published: 2026-05-18 12:44 – Updated: 2026-05-24 00:55
VLAI?
Title
Gnutls: gnutls: denial of service via dtls packet reordering vulnerability
Summary
A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.
CWE
  • CWE-475 - Undefined Behavior for Input to API
Assigner
References
URL Tags
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https://bugzilla.redhat.com/show_bug.cgi?id=2467279 issue-trackingx_refsource_REDHAT
Impacted products
Date Public ?
2026-04-29 00:00
Credits
Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue.
Show details on NVD website

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CVE-2026-42011 (GCVE-0-2026-42011)

Vulnerability from cvelistv5 – Published: 2026-05-07 13:51 – Updated: 2026-05-14 22:37
VLAI?
Title
Gnutls: gnutls: security bypass due to incorrect name constraint handling
Summary
A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
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https://bugzilla.redhat.com/show_bug.cgi?id=2467437 issue-trackingx_refsource_REDHAT
Impacted products
Date Public ?
2026-04-29 00:00
Credits
Red Hat would like to thank Haruto Kimura (Stella) for reporting this issue.
Show details on NVD website

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CVE-2026-42010 (GCVE-0-2026-42010)

Vulnerability from cvelistv5 – Published: 2026-05-07 12:00 – Updated: 2026-05-14 22:14
VLAI?
Title
Gnutls: gnutls: authentication bypass via nul character in username
Summary
A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.
CWE
  • CWE-626 - Null Byte Interaction Error (Poison Null Byte)
Assigner
References
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https://bugzilla.redhat.com/show_bug.cgi?id=2467289 issue-trackingx_refsource_REDHAT
Impacted products
Date Public ?
2026-04-29 00:00
Credits
Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue.
Show details on NVD website

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CVE-2026-34002 (GCVE-0-2026-34002)

Vulnerability from cvelistv5 – Published: 2026-05-05 14:41 – Updated: 2026-05-06 14:27
VLAI?
Title
Xorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling
Summary
A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive information or cause the server to crash, resulting in a denial of service.
CWE
  • CWE-805 - Buffer Access with Incorrect Length Value
Assigner
References
URL Tags
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https://bugzilla.redhat.com/show_bug.cgi?id=2451112 issue-trackingx_refsource_REDHAT
Date Public ?
2026-05-05 14:01
Credits
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
Show details on NVD website

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CVE-2026-34000 (GCVE-0-2026-34000)

Vulnerability from cvelistv5 – Published: 2026-05-05 14:41 – Updated: 2026-05-20 02:35
VLAI?
Title
Xwayland: xorg: x.org x server: information disclosure and denial of service via out-of-bounds read in xkb geometry processing.
Summary
A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the `CheckSetGeom()` and `XkbAddGeomKeyAlias` functions, allows an attacker to read uninitialized or out-of-bounds memory. An attacker with a connection to the X11 server, either locally or remotely, can exploit this without user interaction. This could lead to the disclosure of memory contents or cause a denial of service by crashing the server.
CWE
Assigner
References
URL Tags
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https://access.redhat.com/security/cve/CVE-2026-34000 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451107 issue-trackingx_refsource_REDHAT
Impacted products
Date Public ?
2026-05-05 14:01
Credits
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
Show details on NVD website

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CVE-2026-33846 (GCVE-0-2026-33846)

Vulnerability from cvelistv5 – Published: 2026-05-04 09:08 – Updated: 2026-05-14 05:26
VLAI?
Title
Gnutls: gnutls: denial of service via heap buffer overflow in dtls handshake fragment reassembly
Summary
A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in merge_handshake_packet() where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the message_length field remains consistent across all fragments of the same logical message. An attacker can exploit this by sending crafted DTLS fragments with conflicting message_length values, causing the implementation to allocate a buffer based on a smaller initial fragment and subsequently write beyond its bounds using larger, inconsistent fragments. Because the merge operation does not enforce proper bounds checking against the allocated buffer size, this results in an out-of-bounds write on the heap. The vulnerability is remotely exploitable without authentication via the DTLS handshake path and can lead to application crashes or potential memory corruption.
CWE
  • CWE-130 - Improper Handling of Length Parameter Inconsistency
Assigner
References
URL Tags
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https://bugzilla.redhat.com/show_bug.cgi?id=2450625 issue-trackingx_refsource_REDHAT
Impacted products
Date Public ?
2026-05-04 08:53
Show details on NVD website

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CVE-2026-33845 (GCVE-0-2026-33845)

Vulnerability from cvelistv5 – Published: 2026-04-30 17:41 – Updated: 2026-05-14 05:26
VLAI?
Title
Gnutls: gnutls: denial of service via dtls zero-length fragment
Summary
A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service.
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:13274 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-33845 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2450624 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Affected: 0 , < 3.8.13 (semver)
Red Hat Red Hat Hardened Images Unaffected: 3.8.13-1.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
Create a notification for this product.
Date Public ?
2026-04-30 17:28
Show details on NVD website

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CVE-2026-3832 (GCVE-0-2026-3832)

Vulnerability from cvelistv5 – Published: 2026-04-30 17:41 – Updated: 2026-05-18 20:22
VLAI?
Title
Gnutls: gnutls: security bypass allows acceptance of revoked server certificates via crafted ocsp response
Summary
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.
CWE
  • CWE-179 - Incorrect Behavior Order: Early Validation
Assigner
References
Impacted products
Vendor Product Version
Affected: 0 , < 3.8.13 (semver)
Red Hat Red Hat Hardened Images Unaffected: 3.8.13-1.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
Create a notification for this product.
Date Public ?
2026-04-30 17:29
Show details on NVD website

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CVE-2026-3833 (GCVE-0-2026-3833)

Vulnerability from cvelistv5 – Published: 2026-04-30 17:37 – Updated: 2026-05-04 12:49
VLAI?
Title
Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison
Summary
A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within `excludedSubtrees` or `permittedSubtrees`. A remote attacker can exploit this by crafting a leaf certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass where a certificate that should be rejected is instead accepted. This could result in unauthorized access or information disclosure.
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
Assigner
References
Impacted products
Vendor Product Version
Affected: 0 , < 3.8.13 (semver)
Red Hat Red Hat Hardened Images Unaffected: 3.8.13-1.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
Create a notification for this product.
Date Public ?
2026-04-30 17:26
Show details on NVD website

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CVE-2026-6732 (GCVE-0-2026-6732)

Vulnerability from cvelistv5 – Published: 2026-04-23 22:19 – Updated: 2026-04-30 17:11
VLAI?
Title
Libxml2: libxml2: denial of service via crafted xsd-validated document
Summary
A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
Impacted products
Date Public ?
2026-04-16 00:00
Credits
Red Hat would like to thank Ariel Schon for reporting this issue.
Show details on NVD website

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CVE-2026-2708 (GCVE-0-2026-2708)

Vulnerability from cvelistv5 – Published: 2026-04-23 21:51 – Updated: 2026-04-24 14:55
VLAI?
Title
Libsoup: libsoup: http request smuggling via duplicate content-length headers
Summary
A request smuggling vulnerability exists in libsoup's HTTP/1 header parsing logic. The soup_message_headers_append_common() function in libsoup/soup-message-headers.c unconditionally appends each header value without validating for duplicate or conflicting Content-Length fields. This allows an attacker to send HTTP requests containing multiple Content-Length headers with differing values.
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
Impacted products
Date Public ?
2026-02-18 20:13
Credits
Red Hat would like to thank Cavid for reporting this issue.
Show details on NVD website

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CVE-2026-34003 (GCVE-0-2026-34003)

Vulnerability from cvelistv5 – Published: 2026-04-23 14:54 – Updated: 2026-05-20 02:11
VLAI?
Title
Xorg: xwayland: x.org x server: information exposure and denial of service via out-of-bounds memory access
Summary
A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash, leading to a Denial of Service (DoS). In certain configurations, higher impact outcomes may be possible.
CWE
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:10739 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11352 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11369 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11388 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11656 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11692 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13414 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19125 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19342 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19343 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19344 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-34003 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451113 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.5-6.el10_1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-9.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-6.el9_7.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:23.2.7-6.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-33.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Date Public ?
2026-04-23 14:18
Credits
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
Show details on NVD website

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CVE-2026-34001 (GCVE-0-2026-34001)

Vulnerability from cvelistv5 – Published: 2026-04-23 14:54 – Updated: 2026-05-20 02:11
VLAI?
Title
Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption
Summary
A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially enabling memory corruption. This could result in a denial of service or further compromise of the system.
CWE
  • CWE-825 - Expired Pointer Dereference
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:10739 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11352 vendor-advisoryx_refsource_REDHAT
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https://access.redhat.com/errata/RHSA-2026:11388 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11656 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11692 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13414 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19125 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19342 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19343 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19344 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-34001 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451109 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.5-6.el10_1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-9.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-6.el9_7.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:23.2.7-6.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-33.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Date Public ?
2026-04-23 14:14
Credits
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
Show details on NVD website

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CVE-2026-33999 (GCVE-0-2026-33999)

Vulnerability from cvelistv5 – Published: 2026-04-23 14:53 – Updated: 2026-05-20 02:10
VLAI?
Title
Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling
Summary
A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:10739 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11352 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11369 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11388 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11656 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11692 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13414 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19125 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19342 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19343 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19344 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-33999 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451106 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.5-6.el10_1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-9.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-6.el9_7.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:23.2.7-6.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-33.el9_7 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Date Public ?
2026-04-23 14:11
Credits
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
Show details on NVD website

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          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-04-23T14:11:12.550Z",
          "value": "Made public."
        }
      ],
      "title": "Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling",
      "workarounds": [
        {
          "lang": "en",
          "value": "To mitigate this issue, restrict access to the X11 server. For remote access, disable X11 forwarding in SSH configurations if not required. Edit `/etc/ssh/sshd_config` and set `X11Forwarding no`. After modifying the configuration, restart the `sshd` service using `systemctl restart sshd`. Disabling X11 forwarding may impact remote graphical applications."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-191: Integer Underflow (Wrap or Wraparound)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-33999",
    "datePublished": "2026-04-23T14:53:59.414Z",
    "dateReserved": "2026-03-25T04:53:13.614Z",
    "dateUpdated": "2026-05-20T02:10:50.010Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}