CVE-2026-46212
Description
AI Translation Available
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.
https://git.kernel.org/stable/c/00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401
https://git.kernel.org/stable/c/0cc9847c64cb6e61118bc78c9187c8209a7197fa
https://git.kernel.org/stable/c/368449e467d5f1e2c2e987bf2bd57000ba75e10b
https://git.kernel.org/stable/c/4ae1709a314060a196981b344610d023ea841e57
https://git.kernel.org/stable/c/6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472