{"id":"CVE-2026-46233","summary":"batman-adv: bla: only purge non-released claims","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: bla: only purge non-released claims\n\nWhen batadv_bla_purge_claims() goes through the list of claims, it is only\ntraversing the hash list with an rcu_read_lock(). Due to a potential\nparallel batadv_claim_put(), it can happen that it encounters a claim which\nwas actually in the process of being released+freed by\nbatadv_claim_release(). In this case, backbone_gw is set to NULL before the\ndelayed RCU kfree is started. Calling batadv_bla_claim_get_backbone_gw() is\nthen no longer allowed because it would cause a NULL-ptr derefence.\n\nTo avoid this, only claims with a valid reference counter must be purged.\nAll others are already taken care of.","modified":"2026-07-22T18:14:46.403798500Z","published":"2026-05-28T09:40:55.019Z","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-2026-46233.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6725c523a35eeca611ff37e7d4a8712fae92aefd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7b7ebb7222a5524ce58e48cc9c6d688320ea6cfe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7b8fbcee3184d848b5aee085ca16d0cf05c9b641"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a9f58d5e3261f3deeae69ec1e237f38ef3ff5cbe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab3dbd07a809a8eb30c7ddfab9ac886ed30dce8d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/afb5436f6028fd68f408f189230fbaa19c910d72"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b65365d2b1e6095c538d49baeb140dd1c166c1b3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cf6b604011591865ae39ac82de8978c1120d17af"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46233.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46233"},{"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":"a9f58d5e3261f3deeae69ec1e237f38ef3ff5cbe"},{"fixed":"6725c523a35eeca611ff37e7d4a8712fae92aefd"},{"fixed":"afb5436f6028fd68f408f189230fbaa19c910d72"},{"fixed":"7b8fbcee3184d848b5aee085ca16d0cf05c9b641"},{"fixed":"7b7ebb7222a5524ce58e48cc9c6d688320ea6cfe"},{"fixed":"b65365d2b1e6095c538d49baeb140dd1c166c1b3"},{"fixed":"ab3dbd07a809a8eb30c7ddfab9ac886ed30dce8d"},{"fixed":"cf6b604011591865ae39ac82de8978c1120d17af"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46233.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/cve-osv-conversion/osv-output/CVE-2026-46233.json"}}],"schema_version":"1.7.5"}