octeon_ep_vf: add NULL check for napi_build_skb()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-46188
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:34 UTC
Updated2026-06-11 03:06:59 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: octeon_ep_vf: add NULL check for napi_build_skb() napi_build_skb() can return NULL on allocation failure. In __octep_vf_oq_process_rx(), the result is used directly without a NULL check in both the single-buffer and multi-fragment paths, leading to a NULL pointer dereference. Add NULL checks after both napi_build_skb() calls, properly advancing descriptors and consuming remaining fragments on failure.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000180000 probability, percentile 0.048040000 (date 2026-06-02)

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 60246cdd4c515ea7d920cddf48932efcb990773e git Not specified
CNA Linux Linux affected 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 b0f4711b426a06fb4c4be85c36b9f5588d5140d3 git Not specified
CNA Linux Linux affected 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 6fef6640bbf360e254cc0174365ed30ce3a07572 git Not specified
CNA Linux Linux affected 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 dd66b42854705e4e4ee7f14d260f86c578bed3e3 git Not specified
CNA Linux Linux affected 6.9 Not specified
CNA Linux Linux unaffected 6.9 semver Not specified
CNA Linux Linux unaffected 6.12.88 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.30 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.7 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/dd66b42854705e4e4ee7f14d260f86c578bed3e3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/60246cdd4c515ea7d920cddf48932efcb990773e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b0f4711b426a06fb4c4be85c36b9f5588d5140d3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6fef6640bbf360e254cc0174365ed30ce3a07572 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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