CVE-2026-46212 | BDVDB-2026-336331 Detail
LinuxLinux
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: adjacent.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/1d4b241482d9025c537afb3c7c8419c72c0e0c82
- https://git.kernel.org/stable/c/a1a99837bb6169cfb9187abaa2005e8f12079426
- https://git.kernel.org/stable/c/b88c865dcf6e9f20bfe66a360d4b62941ef769b8
- https://git.kernel.org/stable/c/368449e467d5f1e2c2e987bf2bd57000ba75e10b
- https://git.kernel.org/stable/c/6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472
- https://git.kernel.org/stable/c/00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401
- https://git.kernel.org/stable/c/0cc9847c64cb6e61118bc78c9187c8209a7197fa
- https://git.kernel.org/stable/c/4ae1709a314060a196981b344610d023ea841e57
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.