RHSA-2026:96083

Vulnerability from csaf_redhat - Published: 2026-11-09 03:38 - Updated: 2026-11-09 09:54
Summary
Red Hat Security Advisory: dpdk security update
Severity
Important
Notes
Topic: An update for dpdk is now available for Red Hat Enterprise Linux 8. 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 dpdk packages provide the Data Plane Development Kit, which is a set of libraries and drivers for fast packet processing in the user space. Security Fix(es): * dpdk: dpdk: Missing memory size validation before mmap in vhost memory region setup (CVE-2026-86561) * dpdk: dpdk: Control-queue descriptor double-fetch overflows host heap in DPDK vhost (VDUSE) (CVE-2026-86562) * dpdk: dpdk: Double offset bug in vhost log mapping calculation (CVE-2026-86563) * dpdk: dpdk: Guest can desynchronize virtqueue size from inflight descriptor table size, causing out-of-bounds write (CVE-2026-86565) * dpdk: dpdk: Guest with runt RX descriptors underflows copy length in vhost enqueue (split and packed rings) (CVE-2026-86566) * dpdk: dpdk: VDUSE handler fails to invalidate vring pointers when IOTLB is invalidated, leading to use-after-unmap (CVE-2026-86567) * dpdk: dpdk: Guest-triggered use-after-free and type confusion in vhost-crypto session cleanup (CVE-2026-86845) * dpdk: dpdk: Guest can trigger out-of-bounds write by controlling avail ring index in vhost-crypto (CVE-2026-86846) * dpdk: dpdk: Guest can trigger infinite loop in vhost-crypto writeback chain cleanup (CVE-2026-86847) * dpdk: dpdk: Time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds write in vhost-crypto (CVE-2026-86848) * dpdk: dpdk: Integer overflow combined with missing validation leads to host buffer overflow in vhost-crypto (CVE-2026-86849) * dpdk: dpdk: Stack and heap buffer overflow in nfp vDPA driver (CVE-2026-86856) * dpdk: dpdk: Guest-triggered out-of-bounds walk via vhost indirect descriptor length TOCTOU (CVE-2026-93683) * dpdk: dpdk: heap out-of-bounds read/write in GSO header copy (CVE-2026-100236) 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-2026-86561

A flaw was found in DPDK lib/vhost. Memory size is not adequately validated before mmap during vhost memory-region setup, which can lead to a host crash or memory corruption.

6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE-770 - Allocation of Resources Without Limits or Throttling
Affected products
Product Identifier Version Remediation
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-0:23.11-3.el8_10.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-0:23.11-3.el8_10.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-0:23.11-3.el8_10.src —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-0:23.11-3.el8_10.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-debuginfo-0:23.11-3.el8_10.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-debuginfo-0:23.11-3.el8_10.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-debuginfo-0:23.11-3.el8_10.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-debugsource-0:23.11-3.el8_10.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-debugsource-0:23.11-3.el8_10.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-debugsource-0:23.11-3.el8_10.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-doc-0:23.11-3.el8_10.noarch —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-tools-0:23.11-3.el8_10.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-tools-0:23.11-3.el8_10.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.10.0.Z.MAIN.EUS:dpdk-tools-0:23.11-3.el8_10.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: CRB-8.10.0.Z.MAIN.EUS:dpdk-debuginfo-0:23.11-3.el8_10.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: CRB-8.10.0.Z.MAIN.EUS:dpdk-debuginfo-0:23.11-3.el8_10.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: CRB-8.10.0.Z.MAIN.EUS:dpdk-debuginfo-0:23.11-3.el8_10.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: CRB-8.10.0.Z.MAIN.EUS:dpdk-debugsource-0:23.11-3.el8_10.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: CRB-8.10.0.Z.MAIN.EUS:dpdk-debugsource-0:23.11-3.el8_10.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: CRB-8.10.0.Z.MAIN.EUS:dpdk-debugsource-0:23.11-3.el8_10.x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: CRB-8.10.0.Z.MAIN.EUS:dpdk-devel-0:23.11-3.el8_10.aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: CRB-8.10.0.Z.MAIN.EUS:dpdk-devel-0:23.11-3.el8_10.ppc64le —
Vendor Fix fix
Workaround
Unresolved product id: CRB-8.10.0.Z.MAIN.EUS:dpdk-devel-0:23.11-3.el8_10.x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
CVE-2026-86562

A flaw was found in DPDK lib/vhost. A TOCTOU double-fetch of control-queue descriptors allows a heap buffer overflow with attacker-controlled content in the VDUSE control-queue handler.

7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Important
CVE-2026-86563

A flaw was found in DPDK lib/vhost. A double-offset bug in vhost log mapping calculation can lead to incorrect memory access.

7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-131 - Incorrect Calculation of Buffer Size
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Important
CVE-2026-86565

A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor table size, causing an out-of-bounds write in the host vhost process.

8.2 (High)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE-787 - Out-of-bounds Write
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Important
CVE-2026-86566

A flaw was found in DPDK lib/vhost. A guest with runt RX descriptors can underflow the copy length in vhost enqueue, causing a denial of service in a shared vhost backend such as OVS-DPDK.

6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE-191 - Integer Underflow (Wrap or Wraparound)
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Moderate
CVE-2026-86567

A flaw was found in DPDK lib/vhost. The VDUSE handler fails to invalidate vring pointers when the IOTLB is invalidated, leading to use-after-unmap.

8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-416 - Use After Free
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Important
CVE-2026-86845

A flaw was found in DPDK lib/vhost vhost-crypto. Session cleanup can leave a stale cached session pointer, and the data path does not check the session type before attaching it, leading to use-after-free or type confusion in the host vhost-crypto backend.

6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Moderate
CVE-2026-86846

A flaw was found in DPDK lib/vhost vhost-crypto. A guest can supply an avail-ring descriptor index that is used without bounds checking, causing an out-of-bounds write in the host vhost-crypto backend.

6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE-787 - Out-of-bounds Write
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Moderate
CVE-2026-86847

A flaw was found in DPDK lib/vhost vhost-crypto. Write-back chain cleanup can follow an uninitialized next pointer when mapping a guest descriptor fails, causing the host vhost-crypto process to hang or crash.

6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE-824 - Access of Uninitialized Pointer
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Moderate
CVE-2026-86848

A flaw was found in DPDK lib/vhost vhost-crypto. The indirect-descriptor snapshot double-fetches a guest descriptor next index, allowing a malicious guest to cause an out-of-bounds access in the host backend.

8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Important
CVE-2026-86849

A flaw was found in DPDK lib/vhost vhost-crypto. Integer overflow in chain length checks, and missing length checks on the RSA path, can overflow a host buffer in the vhost-crypto backend.

6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE-787 - Out-of-bounds Write
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Moderate
CVE-2026-86856

A flaw was found in the DPDK nfp vDPA driver. Stack and heap buffers sized for a single queue pair can be overflowed when more virtqueues are configured, leading to a host crash or memory corruption.

6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE-787 - Out-of-bounds Write
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Moderate
CVE-2026-93683

A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that supplies an out-of-range next index on a small host copy in the vDPA relay path, can cause the host vhost process to walk past the validated mapping or heap copy. That can crash or disrupt the vhost process. Out-of-bounds bytes are consumed as descriptor fields for GPA translation and are not returned to the guest as payload. This is a residual issue in the non-contiguous indirect descriptor copy path introduced as part of the CVE-2018-1059 fix.

6.4 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:H
CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Moderate
CVE-2026-100236

A flaw was found in the DPDK GSO library. When software GSO copies packet headers into a new mbuf, it does not check that the header fits in the source first segment or in the destination buffer, and a header longer than the configured GSO segment size can underflow the payload-size calculation. A remote or guest-supplied packet processed with software GSO can trigger an out-of-bounds read or write.

8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE-787 - Out-of-bounds Write
Affected products
Fixed 23 products, the same list as for CVE-2026-86561
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:96083 self
https://access.redhat.com/security/updates/classi… external
https://bugzilla.redhat.com/show_bug.cgi?id=2529666 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529667 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529668 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529683 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529684 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529685 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529844 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529846 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529847 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529853 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529858 external
https://bugzilla.redhat.com/show_bug.cgi?id=2529897 external
https://bugzilla.redhat.com/show_bug.cgi?id=2537015 external
https://bugzilla.redhat.com/show_bug.cgi?id=2541488 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-86561 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529666 external
https://www.cve.org/CVERecord?id=CVE-2026-86561 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86561 external
https://access.redhat.com/security/cve/CVE-2026-86562 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529667 external
https://www.cve.org/CVERecord?id=CVE-2026-86562 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86562 external
https://git.dpdk.org/dpdk/commit/?id=6ec17781346e… external
https://access.redhat.com/security/cve/CVE-2026-86563 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529668 external
https://www.cve.org/CVERecord?id=CVE-2026-86563 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86563 external
https://access.redhat.com/security/cve/CVE-2026-86565 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529683 external
https://www.cve.org/CVERecord?id=CVE-2026-86565 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86565 external
https://access.redhat.com/security/cve/CVE-2026-86566 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529684 external
https://www.cve.org/CVERecord?id=CVE-2026-86566 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86566 external
https://access.redhat.com/security/cve/CVE-2026-86567 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529685 external
https://www.cve.org/CVERecord?id=CVE-2026-86567 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86567 external
https://access.redhat.com/security/cve/CVE-2026-86845 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529844 external
https://www.cve.org/CVERecord?id=CVE-2026-86845 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86845 external
https://access.redhat.com/security/cve/CVE-2026-86846 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529846 external
https://www.cve.org/CVERecord?id=CVE-2026-86846 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86846 external
https://access.redhat.com/security/cve/CVE-2026-86847 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529847 external
https://www.cve.org/CVERecord?id=CVE-2026-86847 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86847 external
https://access.redhat.com/security/cve/CVE-2026-86848 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529853 external
https://www.cve.org/CVERecord?id=CVE-2026-86848 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86848 external
https://access.redhat.com/security/cve/CVE-2026-86849 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529858 external
https://www.cve.org/CVERecord?id=CVE-2026-86849 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86849 external
https://access.redhat.com/security/cve/CVE-2026-86856 self
https://bugzilla.redhat.com/show_bug.cgi?id=2529897 external
https://www.cve.org/CVERecord?id=CVE-2026-86856 external
https://nvd.nist.gov/vuln/detail/CVE-2026-86856 external
https://access.redhat.com/security/cve/CVE-2026-93683 self
https://bugzilla.redhat.com/show_bug.cgi?id=2537015 external
https://www.cve.org/CVERecord?id=CVE-2026-93683 external
https://nvd.nist.gov/vuln/detail/CVE-2026-93683 external
https://access.redhat.com/security/cve/CVE-2026-100236 self
https://bugzilla.redhat.com/show_bug.cgi?id=2541488 external
https://www.cve.org/CVERecord?id=CVE-2026-100236 external
https://nvd.nist.gov/vuln/detail/CVE-2026-100236 external
Acknowledgments
Ivar Al-Safawi
Ada Logics Arthur Chan
Anthropic Research
AOSP Lab @Nankai University Naseeb Dangi Xiang Li
Alexandru-Ionut Jipa
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      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
            "version": "3.1"
          },
          "products": [
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "dpdk: dpdk: heap out-of-bounds read/write in GSO header copy"
    }
  ]
}



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Sightings

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Nomenclature

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