CVE-2026-46188
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.
Affected versions
Linux kernel versions
6.9
and later are affected. Fixed in
6.12.88,
6.18.30,
7.0.7,
7.1-rc1
and their respective stable series.
References
The following references provide additional information about CVE-2026-46188 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/60246cdd4c515ea7d920cddf48932efcb990773e
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PatchKernel patch commithttps://git.kernel.org/stable/c/6fef6640bbf360e254cc0174365ed30ce3a07572
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PatchKernel patch commithttps://git.kernel.org/stable/c/b0f4711b426a06fb4c4be85c36b9f5588d5140d3
Frequently asked questions
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What is CVE-2026-46188?
CVE-2026-46188 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.9 onward and has been patched in 6.12.88, 6.18.30, 7.0.7 and others. CVE-2026-46188 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-46188?
Yes — CVE-2026-46188 has been patched. Fixed versions include 6.12.88, 6.18.30, 7.0.7 and others. If you are running Linux kernel 6.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46188 actively exploited?
No — CVE-2026-46188 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.