CVE-2026-46212
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.27% probability · 20th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.