{"id":"CVE-2026-46212","summary":"batman-adv: bla: prevent use-after-free when deleting claims","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: bla: prevent use-after-free when deleting claims\n\nWhen batadv_bla_del_backbone_claims() removes all claims for a backbone, it\ndoes this by dropping the link entry in the hash list. This list entry\nitself was one of the references which need to be dropped at the same time\nvia batadv_claim_put().\n\nBut the batadv_claim_put() must not be done before the last access to the\nclaim object in this function. Otherwise the claim might be freed already\nby the batadv_claim_release() function before the list entry was dropped.","modified":"2026-07-22T18:22:48.870253622Z","published":"2026-05-28T09:40:29.712Z","related":["SUSE-SU-2026:3130-1","SUSE-SU-2026:3166-1","openSUSE-SU-2026:10954-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46212.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0cc9847c64cb6e61118bc78c9187c8209a7197fa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1d4b241482d9025c537afb3c7c8419c72c0e0c82"},{"type":"WEB","url":"https://git.kernel.org/stable/c/368449e467d5f1e2c2e987bf2bd57000ba75e10b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4ae1709a314060a196981b344610d023ea841e57"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a1a99837bb6169cfb9187abaa2005e8f12079426"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b88c865dcf6e9f20bfe66a360d4b62941ef769b8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46212.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46212"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"23721387c409087fd3b97e274f34d3ddc0970b74"},{"fixed":"1d4b241482d9025c537afb3c7c8419c72c0e0c82"},{"fixed":"a1a99837bb6169cfb9187abaa2005e8f12079426"},{"fixed":"b88c865dcf6e9f20bfe66a360d4b62941ef769b8"},{"fixed":"368449e467d5f1e2c2e987bf2bd57000ba75e10b"},{"fixed":"6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472"},{"fixed":"00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401"},{"fixed":"0cc9847c64cb6e61118bc78c9187c8209a7197fa"},{"fixed":"4ae1709a314060a196981b344610d023ea841e57"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46212.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.5.0"},{"fixed":"5.10.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.140"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.90"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.32"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46212.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}