Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: prevent use-after-free when deleting claims When batadv_bla_del_backbone_claims() removes all claims for a backbone, it does this by dropping the link entry in the hash list. This list entry itself was one of the references which need to be dropped at the same time via batadv_claim_put(). But the batadv_claim_put() must not be done before the last access to the claim object in this function. Otherwise the claim might be freed already by the batadv_claim_release() function before the list entry was dropped.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.5, < 5.10.258 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401Patch
- https://git.kernel.org/stable/c/0cc9847c64cb6e61118bc78c9187c8209a7197faPatch
- https://git.kernel.org/stable/c/1d4b241482d9025c537afb3c7c8419c72c0e0c82Patch
- https://git.kernel.org/stable/c/368449e467d5f1e2c2e987bf2bd57000ba75e10bPatch
- https://git.kernel.org/stable/c/4ae1709a314060a196981b344610d023ea841e57Patch
- https://git.kernel.org/stable/c/6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472Patch
- https://git.kernel.org/stable/c/a1a99837bb6169cfb9187abaa2005e8f12079426Patch
- https://git.kernel.org/stable/c/b88c865dcf6e9f20bfe66a360d4b62941ef769b8Patch
FAQ
What is CVE-2026-46212?
CVE-2026-46212 is a vulnerability with a CVSS score of 8.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: prevent use-after-free when deleting claims When batadv_bla_del_backbone_claims() removes all claims for a backbo...
How severe is CVE-2026-46212?
CVE-2026-46212 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46212?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.