RHSA-2026:0533

Vulnerability from csaf_redhat - Published: 2026-01-14 00:17 - Updated: 2026-03-13 01:08
Summary
Red Hat Security Advisory: kernel security update
Severity
Important
Notes
Topic: An update for kernel is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: smb: client: Fix use-after-free in cifs_fill_dirent (CVE-2025-38051) * kernel: smb: client: fix race with concurrent opens in rename(2) (CVE-2025-39825) * kernel: efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare (CVE-2025-39817) * kernel: mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required() (CVE-2023-53401) * kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory (CVE-2025-39883) * kernel: e1000e: fix heap overflow in e1000_set_eeprom (CVE-2025-39898) * kernel: nbd: fix incomplete validation of ioctl arg (CVE-2023-53513) * kernel: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL (CVE-2023-53680) * kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses (CVE-2023-53675) * kernel: media: rc: fix races with imon_disconnect() (CVE-2025-39993) * kernel: ipv6: Fix out-of-bounds access in ipv6_find_tlv() (CVE-2023-53705) * kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2023-53401

A null pointer dereference exists in the linux kernel such that in obj_stock_flush_required():stock->cached_objcg can be reset between the check and dereference, resulting in damage to the availability of the system.

7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
Workaround Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVE-2023-53513

A flaw has been found in the Linux kernel’s NBD drivers.The issue stems from incomplete validation of IOCTL arguments passed to the NBD driver. Specifically, oversized or unchecked arguments may lead to a signed integer overflow in __block_write_full_page() and misuse of argument values cast to int in nbd_add_socket().

7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
CWE-190 - Integer Overflow or Wraparound
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
Workaround Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVE-2023-53675

A bounds-checking flaw was found in the Linux kernel Small Computer System Interface Enclosure Services driver in the way descriptor pointers are validated while processing enclosure data. Missing checks could allow an out-of-bounds access during parsing. A local user could use this flaw to crash the system while enclosure data is processed, resulting in a denial of service.

7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
Workaround To mitigate this issue, prevent module ses from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
CVE-2023-53680

In the Linux kernel, the following vulnerability has been resolved: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL OPDESC() simply indexes into nfsd4_ops[] by the op's operation number, without range checking that value. It assumes callers are careful to avoid calling it with an out-of-bounds opnum value. nfsd4_decode_compound() is not so careful, and can invoke OPDESC() with opnum set to OP_ILLEGAL, which is 10044 -- well beyond the end of nfsd4_ops[].

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
Workaround To mitigate this issue, prevent module nfs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
CVE-2023-53705

An out of bounds (OOB) memory access flaw was found in the Linux kernel's ipv6 network subsystem. This could allow a local attacker to crash the system or leak kernel internal information.

7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
CWE-125 - Out-of-bounds Read
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
Workaround Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVE-2025-38051

A use-after-free flaw was found in cifs_fill_dirent in fs/cifs/readdir.c in smb client in the Linux Kernel. This flaw could allow an attacker to crash the system due to race problem. This vulnerability could even lead to a kernel information leak problem.

7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
Workaround Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVE-2025-39817

A slab-out-of-bounds exists in the linux kernel in efivarfs_d_compare, such that the issue can be triggered by parallel lookups using an invalid filename due to an incorrect memcmp function.

7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-125 - Out-of-bounds Read
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
Workaround Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVE-2025-39825

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix race with concurrent opens in rename(2) Besides sending the rename request to the server, the rename process also involves closing any deferred close, waiting for outstanding I/O to complete as well as marking all existing open handles as deleted to prevent them from deferring closes, which increases the race window for potential concurrent opens on the target file. Fix this by unhashing the dentry in advance to prevent any concurrent opens on the target.

7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-366 - Race Condition within a Thread
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
CVE-2025-39883

A use-after-free memory bug exists in the linux kernel, such that unpoison_memory() tries to check the PG_HWPoison flags of an uninitialized page. So VM_BUG_ON_PAGE(PagePoisoned(page)) is triggered, leading to damage to the system availability and integrity.

7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 - Use After Free
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
Workaround Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVE-2025-39898

A heap‑overflow vulnerability was discovered in the linux kernel e1000e driver’s e1000_set_eeprom() function, insufficient validation of the requested length for an EEPROM change could allow a local, low‑privilege user to trigger memory corruption (heap overflow). A local unprivileged user with access to the driver could exploit this flaw to cause memory corruption, potentially leading to confidentiality, integrity, and availability damage.

0.0 (None)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N
CWE-122 - Heap-based Buffer Overflow
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
Workaround Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVE-2025-39993

A use-after-free flaw exists in the Linux kernel’s media/rc subsystem. When the device is disconnected via imon_disconnect(), the driver may unconditionally release a usb_device reference (via usb_put_dev) even while other operations (such as vfd_write, send_packet, display_open, lcd_write) are still in progress. Because the pointers usbdev_intf0/usbdev_intf1 are not properly protected by a users-counter or locking, this situation can lead to a use-after-free of the usb_device pointer and therefore memory corruption or kernel stability issues

7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 - Use After Free
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
Workaround Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVE-2025-68285

A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The have_mon_and_osd_map() function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory during CephFS or RBD mount operations.

7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. https://access.redhat.com/errata/RHSA-2026:0533
References
https://access.redhat.com/errata/RHSA-2026:0533 self
https://access.redhat.com/security/updates/classi… external
https://bugzilla.redhat.com/show_bug.cgi?id=2373329 external
https://bugzilla.redhat.com/show_bug.cgi?id=2395792 external
https://bugzilla.redhat.com/show_bug.cgi?id=2395805 external
https://bugzilla.redhat.com/show_bug.cgi?id=2396417 external
https://bugzilla.redhat.com/show_bug.cgi?id=2397553 external
https://bugzilla.redhat.com/show_bug.cgi?id=2400598 external
https://bugzilla.redhat.com/show_bug.cgi?id=2400795 external
https://bugzilla.redhat.com/show_bug.cgi?id=2402213 external
https://bugzilla.redhat.com/show_bug.cgi?id=2402293 external
https://bugzilla.redhat.com/show_bug.cgi?id=2404121 external
https://bugzilla.redhat.com/show_bug.cgi?id=2405713 external
https://bugzilla.redhat.com/show_bug.cgi?id=2422801 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2023-53401 self
https://bugzilla.redhat.com/show_bug.cgi?id=2396417 external
https://www.cve.org/CVERecord?id=CVE-2023-53401 external
https://nvd.nist.gov/vuln/detail/CVE-2023-53401 external
https://lore.kernel.org/linux-cve-announce/202509… external
https://access.redhat.com/security/cve/CVE-2023-53513 self
https://bugzilla.redhat.com/show_bug.cgi?id=2400795 external
https://www.cve.org/CVERecord?id=CVE-2023-53513 external
https://nvd.nist.gov/vuln/detail/CVE-2023-53513 external
https://lore.kernel.org/linux-cve-announce/202510… external
https://access.redhat.com/security/cve/CVE-2023-53675 self
https://bugzilla.redhat.com/show_bug.cgi?id=2402293 external
https://www.cve.org/CVERecord?id=CVE-2023-53675 external
https://nvd.nist.gov/vuln/detail/CVE-2023-53675 external
https://lore.kernel.org/linux-cve-announce/202510… external
https://access.redhat.com/security/cve/CVE-2023-53680 self
https://bugzilla.redhat.com/show_bug.cgi?id=2402213 external
https://www.cve.org/CVERecord?id=CVE-2023-53680 external
https://nvd.nist.gov/vuln/detail/CVE-2023-53680 external
https://lore.kernel.org/linux-cve-announce/202510… external
https://access.redhat.com/security/cve/CVE-2023-53705 self
https://bugzilla.redhat.com/show_bug.cgi?id=2405713 external
https://www.cve.org/CVERecord?id=CVE-2023-53705 external
https://nvd.nist.gov/vuln/detail/CVE-2023-53705 external
https://lore.kernel.org/linux-cve-announce/202510… external
https://access.redhat.com/security/cve/CVE-2025-38051 self
https://bugzilla.redhat.com/show_bug.cgi?id=2373329 external
https://www.cve.org/CVERecord?id=CVE-2025-38051 external
https://nvd.nist.gov/vuln/detail/CVE-2025-38051 external
https://lore.kernel.org/linux-cve-announce/202506… external
https://access.redhat.com/security/cve/CVE-2025-39817 self
https://bugzilla.redhat.com/show_bug.cgi?id=2395805 external
https://www.cve.org/CVERecord?id=CVE-2025-39817 external
https://nvd.nist.gov/vuln/detail/CVE-2025-39817 external
https://lore.kernel.org/linux-cve-announce/202509… external
https://access.redhat.com/security/cve/CVE-2025-39825 self
https://bugzilla.redhat.com/show_bug.cgi?id=2395792 external
https://www.cve.org/CVERecord?id=CVE-2025-39825 external
https://nvd.nist.gov/vuln/detail/CVE-2025-39825 external
https://lore.kernel.org/linux-cve-announce/202509… external
https://access.redhat.com/security/cve/CVE-2025-39883 self
https://bugzilla.redhat.com/show_bug.cgi?id=2397553 external
https://www.cve.org/CVERecord?id=CVE-2025-39883 external
https://nvd.nist.gov/vuln/detail/CVE-2025-39883 external
https://lore.kernel.org/linux-cve-announce/202509… external
https://access.redhat.com/security/cve/CVE-2025-39898 self
https://bugzilla.redhat.com/show_bug.cgi?id=2400598 external
https://www.cve.org/CVERecord?id=CVE-2025-39898 external
https://nvd.nist.gov/vuln/detail/CVE-2025-39898 external
https://lore.kernel.org/linux-cve-announce/202510… external
https://access.redhat.com/security/cve/CVE-2025-39993 self
https://bugzilla.redhat.com/show_bug.cgi?id=2404121 external
https://www.cve.org/CVERecord?id=CVE-2025-39993 external
https://nvd.nist.gov/vuln/detail/CVE-2025-39993 external
https://lore.kernel.org/linux-cve-announce/202510… external
https://access.redhat.com/security/cve/CVE-2025-68285 self
https://bugzilla.redhat.com/show_bug.cgi?id=2422801 external
https://www.cve.org/CVERecord?id=CVE-2025-68285 external
https://nvd.nist.gov/vuln/detail/CVE-2025-68285 external
https://lore.kernel.org/linux-cve-announce/202512… external
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    {
      "cve": "CVE-2023-53401",
      "cwe": {
        "id": "CWE-362",
        "name": "Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)"
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      "discovery_date": "2025-09-18T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2396417"
        }
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        {
          "category": "description",
          "text": "A null pointer dereference exists in the linux kernel such that in obj_stock_flush_required():stock-\u003ecached_objcg can be reset between the check and dereference, resulting in damage to the availability of the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "A race in the memcg/objcg accounting allowed stock-\u003ecached_objcg to change between check and use, leading to a NULL pointer dereference and kernel crash under concurrency. The fix uses READ_ONCE/WRITE_ONCE for all accesses to cached_objcg, eliminating the data race observed by KCSAN. Impact is a local kernel DoS",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-53401"
        },
        {
          "category": "external",
          "summary": "RHBZ#2396417",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2396417"
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-53401",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-53401"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-53401",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53401"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2025091800-CVE-2023-53401-b668@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2025091800-CVE-2023-53401-b668@gregkh/T"
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      "title": "kernel: mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()"
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      "cve": "CVE-2023-53513",
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        "id": "CWE-190",
        "name": "Integer Overflow or Wraparound"
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          "text": "2400795"
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          "category": "description",
          "text": "A flaw has been found in the Linux kernel\u2019s NBD drivers.The issue stems from incomplete validation of IOCTL arguments passed to the NBD driver. Specifically, oversized or unchecked arguments may lead to a signed integer overflow in __block_write_full_page() and misuse of argument values cast to int in nbd_add_socket().",
          "title": "Vulnerability description"
        },
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          "category": "summary",
          "text": "kernel: nbd: fix incomplete validation of ioctl arg",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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          "category": "external",
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          "url": "https://www.cve.org/CVERecord?id=CVE-2023-53513"
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          "category": "external",
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53513"
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          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2025100130-CVE-2023-53513-4667@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2025100130-CVE-2023-53513-4667@gregkh/T"
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      "title": "kernel: nbd: fix incomplete validation of ioctl arg"
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    {
      "cve": "CVE-2023-53675",
      "discovery_date": "2025-10-07T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2402293"
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      "notes": [
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          "category": "description",
          "text": "A bounds-checking flaw was found in the Linux kernel Small Computer System Interface Enclosure Services driver in the way descriptor pointers are validated while processing enclosure data. Missing checks could allow an out-of-bounds access during parsing. \nA local user could use this flaw to crash the system while enclosure data is processed, resulting in a denial of service.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The ses_enclosure_data_process() routine did not sufficiently validate descriptor pointer positions before dereferencing them, which could allow the parser to read beyond the buffer when a device or crafted input reports malformed enclosure pages. The fix adds strict pointer and length checks to avoid out-of-bounds accesses.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-53675"
        },
        {
          "category": "external",
          "summary": "RHBZ#2402293",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2402293"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-53675",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-53675"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-53675",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53675"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2025100707-CVE-2023-53675-e7ac@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2025100707-CVE-2023-53675-e7ac@gregkh/T"
        }
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      "release_date": "2025-10-07T00:00:00+00:00",
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            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses"
    },
    {
      "cve": "CVE-2023-53680",
      "discovery_date": "2025-10-07T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2402213"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Avoid calling OPDESC() with ops-\u003eopnum == OP_ILLEGAL\n\nOPDESC() simply indexes into nfsd4_ops[] by the op\u0027s operation\nnumber, without range checking that value. It assumes callers are\ncareful to avoid calling it with an out-of-bounds opnum value.\n\nnfsd4_decode_compound() is not so careful, and can invoke OPDESC()\nwith opnum set to OP_ILLEGAL, which is 10044 -- well beyond the end\nof nfsd4_ops[].",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: NFSD: Avoid calling OPDESC() with ops-\u003eopnum == OP_ILLEGAL",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "NFSD could call OPDESC() with opnum == OP_ILLEGAL, indexing past nfsd4_ops[] and causing an out-of-bounds read leading to a crash. A remote unauthenticated NFSv4 client could trigger this via a crafted COMPOUND, impacting availability of the NFS server. The fix sets op-\u003eopdesc = NULL, assigns opdesc only when opnum is in range, and removes the unconditional OPDESC() call.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-53680"
        },
        {
          "category": "external",
          "summary": "RHBZ#2402213",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2402213"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-53680",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-53680"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-53680",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53680"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2025100708-CVE-2023-53680-501d@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2025100708-CVE-2023-53680-501d@gregkh/T"
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      "release_date": "2025-10-07T00:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2026-01-14T00:17:49+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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            "attackComplexity": "LOW",
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            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
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          "category": "impact",
          "details": "Moderate"
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      "title": "kernel: NFSD: Avoid calling OPDESC() with ops-\u003eopnum == OP_ILLEGAL"
    },
    {
      "cve": "CVE-2023-53705",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "discovery_date": "2025-10-22T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2405713"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An out of bounds (OOB) memory access flaw was found in the Linux kernel\u0027s ipv6 network subsystem. This could allow a local attacker to crash the system or leak kernel internal information.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: ipv6: Fix out-of-bounds access in ipv6_find_tlv()",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The function ipv6_find_tlv() parsed IPv6 extension headers without checking that at least two bytes were available before reading the option length field.\nAn attacker could send a malformed IPv6 packet with a truncated extension header, causing an out-of-bounds read and potential kernel crash or memory fault while parsing.\nThe fix adds a length check (if (len \u003c 2) goto bad;) before accessing the second byte, preventing buffer overrun.\nThis issue is remotely triggerable via network traffic and can lead to kernel panic (DoS) or, in rare cases, information leakage through speculative execution paths.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-53705"
        },
        {
          "category": "external",
          "summary": "RHBZ#2405713",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2405713"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-53705",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-53705"
        },
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          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-53705",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53705"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2025102212-CVE-2023-53705-38d9@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2025102212-CVE-2023-53705-38d9@gregkh/T"
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        "id": "CWE-825",
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      "discovery_date": "2025-06-18T00:00:00+00:00",
      "ids": [
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          "text": "2373329"
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          "category": "description",
          "text": "A use-after-free flaw was found in cifs_fill_dirent in fs/cifs/readdir.c in smb client in the Linux Kernel. This flaw could allow an attacker to crash the system due to race problem. This vulnerability could even lead to a kernel information leak problem.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: smb: client: Fix use-after-free in cifs_fill_dirent",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-38051"
        },
        {
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          "url": "https://www.cve.org/CVERecord?id=CVE-2025-38051"
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          "category": "external",
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38051"
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        {
          "category": "external",
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          "url": "https://lore.kernel.org/linux-cve-announce/2025061831-CVE-2025-38051-77da@gregkh/T"
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      "cve": "CVE-2025-39817",
      "cwe": {
        "id": "CWE-125",
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          "text": "2395805"
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        {
          "category": "description",
          "text": "A slab-out-of-bounds exists in the linux kernel in efivarfs_d_compare, such that the issue can be triggered by parallel lookups using an invalid filename due to an incorrect memcmp function.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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          "url": "https://www.cve.org/CVERecord?id=CVE-2025-39817"
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          "category": "external",
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39817"
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          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2025091615-CVE-2025-39817-90b7@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2025091615-CVE-2025-39817-90b7@gregkh/T"
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          "date": "2026-01-14T00:17:49+00:00",
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      "title": "kernel: efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare"
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      "cve": "CVE-2025-39825",
      "cwe": {
        "id": "CWE-366",
        "name": "Race Condition within a Thread"
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      "discovery_date": "2025-09-16T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2395792"
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          "category": "description",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix race with concurrent opens in rename(2)\n\nBesides sending the rename request to the server, the rename process\nalso involves closing any deferred close, waiting for outstanding I/O\nto complete as well as marking all existing open handles as deleted to\nprevent them from deferring closes, which increases the race window\nfor potential concurrent opens on the target file.\n\nFix this by unhashing the dentry in advance to prevent any concurrent\nopens on the target.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: smb: client: fix race with concurrent opens in rename(2)",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-39825"
        },
        {
          "category": "external",
          "summary": "RHBZ#2395792",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395792"
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        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-39825",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-39825"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-39825",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39825"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2025091616-CVE-2025-39825-8a7a@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2025091616-CVE-2025-39825-8a7a@gregkh/T"
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      "release_date": "2025-09-16T00:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2026-01-14T00:17:49+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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      "title": "kernel: smb: client: fix race with concurrent opens in rename(2)"
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    {
      "cve": "CVE-2025-39883",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
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      "discovery_date": "2025-09-23T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2397553"
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        {
          "category": "description",
          "text": "A use-after-free memory bug exists in the linux kernel, such that unpoison_memory() tries to check the PG_HWPoison\nflags of an uninitialized page.  So VM_BUG_ON_PAGE(PagePoisoned(page)) is triggered, leading to damage to the system availability and integrity.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-39883"
        },
        {
          "category": "external",
          "summary": "RHBZ#2397553",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2397553"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-39883",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-39883"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-39883",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39883"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2025092302-CVE-2025-39883-6015@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2025092302-CVE-2025-39883-6015@gregkh/T"
        }
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      "release_date": "2025-09-23T00:00:00+00:00",
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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          "category": "impact",
          "details": "Moderate"
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      "title": "kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory"
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    {
      "cve": "CVE-2025-39898",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
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      "discovery_date": "2025-10-01T00:00:00+00:00",
      "ids": [
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          "text": "2400598"
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        {
          "category": "description",
          "text": "A heap\u2011overflow vulnerability was discovered in the linux kernel e1000e driver\u2019s e1000_set_eeprom() function, insufficient validation of the requested length for an EEPROM change could allow a local, low\u2011privilege user to trigger memory corruption (heap overflow). A local unprivileged user with access to the driver could exploit this flaw to cause memory corruption, potentially leading to confidentiality, integrity, and availability damage.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: e1000e: fix heap overflow in e1000_set_eeprom",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This CVE has been marked as Rejected by the assigning CNA.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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            "baseScore": 0.0,
            "baseSeverity": "NONE",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "details": "Moderate"
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      "title": "kernel: e1000e: fix heap overflow in e1000_set_eeprom"
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    {
      "cve": "CVE-2025-39993",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
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      "discovery_date": "2025-10-15T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2404121"
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      "notes": [
        {
          "category": "description",
          "text": "A use-after-free flaw exists in the Linux kernel\u2019s media/rc subsystem. When the device is disconnected via imon_disconnect(), the driver may unconditionally release a usb_device reference (via usb_put_dev) even while other operations (such as vfd_write, send_packet, display_open, lcd_write) are still in progress. Because the pointers usbdev_intf0/usbdev_intf1 are not properly protected by a users-counter or locking, this situation can lead to a use-after-free of the usb_device pointer and therefore memory corruption or kernel stability issues",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: media: rc: fix races with imon_disconnect()",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-39993"
        },
        {
          "category": "external",
          "summary": "RHBZ#2404121",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404121"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-39993",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-39993"
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          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-39993",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39993"
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          "category": "external",
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          "url": "https://lore.kernel.org/linux-cve-announce/2025101527-CVE-2025-39993-caef@gregkh/T"
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      "release_date": "2025-10-15T00:00:00+00:00",
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      "title": "kernel: media: rc: fix races with imon_disconnect()"
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    {
      "cve": "CVE-2025-68285",
      "cwe": {
        "id": "CWE-825",
        "name": "Expired Pointer Dereference"
      },
      "discovery_date": "2025-12-16T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2422801"
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      "notes": [
        {
          "category": "description",
          "text": "A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The have_mon_and_osd_map() function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory during CephFS or RBD mount operations.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This race condition occurs during Ceph client session establishment. Exploitation is timing-dependent and requires concurrent map updates during mount, making practical exploitation difficult but not impossible.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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            "BaseOS-8.4.0.Z.EUS.EXTENSION:kernel-devel-0:4.18.0-305.183.1.el8_4.x86_64",
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            "BaseOS-8.4.0.Z.EUS.EXTENSION:kernel-modules-0:4.18.0-305.183.1.el8_4.x86_64",
            "BaseOS-8.4.0.Z.EUS.EXTENSION:kernel-modules-extra-0:4.18.0-305.183.1.el8_4.x86_64",
            "BaseOS-8.4.0.Z.EUS.EXTENSION:kernel-tools-0:4.18.0-305.183.1.el8_4.x86_64",
            "BaseOS-8.4.0.Z.EUS.EXTENSION:kernel-tools-debuginfo-0:4.18.0-305.183.1.el8_4.x86_64",
            "BaseOS-8.4.0.Z.EUS.EXTENSION:kernel-tools-libs-0:4.18.0-305.183.1.el8_4.x86_64",
            "BaseOS-8.4.0.Z.EUS.EXTENSION:perf-0:4.18.0-305.183.1.el8_4.x86_64",
            "BaseOS-8.4.0.Z.EUS.EXTENSION:perf-debuginfo-0:4.18.0-305.183.1.el8_4.x86_64",
            "BaseOS-8.4.0.Z.EUS.EXTENSION:python3-perf-0:4.18.0-305.183.1.el8_4.x86_64",
            "BaseOS-8.4.0.Z.EUS.EXTENSION:python3-perf-debuginfo-0:4.18.0-305.183.1.el8_4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.