CVE-2026-46188
MEDIUM severity · CVSS 5.5 · CWE-476
5.5CVSS MEDIUM
Summary
In 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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/60246cdd4c515ea7d920cddf48932efcb990773e ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/60246cdd4c515ea7d920cddf48932efcb990773ePatch
- https://git.kernel.org/stable/c/6fef6640bbf360e254cc0174365ed30ce3a07572Patch
- https://git.kernel.org/stable/c/b0f4711b426a06fb4c4be85c36b9f5588d5140d3Patch
- https://git.kernel.org/stable/c/dd66b42854705e4e4ee7f14d260f86c578bed3e3Patch