Vulnerability details
CVE-2026-46212
Linux Linux
batman-adv: bla: prevent use-after-free when deleting claims
CVSS 3.1
8.8High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 3.5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23721387c409087fd3b97e274f34d3ddc0970b74 ≤ v < a1a99837bb6169cfb9187abaa2005e8f12079426 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23721387c409087fd3b97e274f34d3ddc0970b74 ≤ v < b88c865dcf6e9f20bfe66a360d4b62941ef769b8 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23721387c409087fd3b97e274f34d3ddc0970b74 ≤ v < 368449e467d5f1e2c2e987bf2bd57000ba75e10b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23721387c409087fd3b97e274f34d3ddc0970b74 ≤ v < 1d4b241482d9025c537afb3c7c8419c72c0e0c82 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23721387c409087fd3b97e274f34d3ddc0970b74 ≤ v < 00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23721387c409087fd3b97e274f34d3ddc0970b74 ≤ v < 0cc9847c64cb6e61118bc78c9187c8209a7197fa | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23721387c409087fd3b97e274f34d3ddc0970b74 ≤ v < 4ae1709a314060a196981b344610d023ea841e57 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 23721387c409087fd3b97e274f34d3ddc0970b74 ≤ v < 6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472 | CVEProject cvelistV5 (CNA) |
References and advisories
8- 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
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Details
- Published
- 2026-05-28
- Last updated
- 2026-08-05
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.27%
Probability of exploitation in 30 days
19.8%
Percentile (among all CVEs)
Weaknesses (CWE)
- —