CVE-2026-46231
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: put backbone reference on failed claim hash insert When batadv_bla_add_claim() fails to insert a new claim into the hash, it leaked a reference to the backbone_gw for which the claim was intended. Call batadv_backbone_gw_put() on the error path to release the reference and avoid leaking the backbone_gw object.
Affected versions
Linux kernel versions
3.16.39,
4.4.217,
4.7
and later are affected. Fixed in
5.10.258,
5.15.209,
6.1.175,
6.6.140,
6.12.90,
6.18.32,
7.0.9,
7.1-rc4
and their respective stable series.
References
The following references provide additional information about CVE-2026-46231 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/0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0
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PatchKernel patch commithttps://git.kernel.org/stable/c/2888c9a154123db0254ae4fb9bea570c7e1f2e06
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PatchKernel patch commithttps://git.kernel.org/stable/c/65419eb4259a26a3cd3f56fa0e3b3c113bf8c256
Frequently asked questions
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What is CVE-2026-46231?
CVE-2026-46231 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.16.39 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46231 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-2026-46231?
Yes — CVE-2026-46231 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 3.16.39 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46231 actively exploited?
No — CVE-2026-46231 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.