{"api_version":"1","generated_at":"2026-05-28T16:29:25+00:00","cve":"CVE-2026-46233","urls":{"html":"https://cve.report/CVE-2026-46233","api":"https://cve.report/api/cve/CVE-2026-46233.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46233","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46233"},"summary":{"title":"batman-adv: bla: only purge non-released claims","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-28 10:16:38","updated_at":"2026-05-28 13:44:01"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ab3dbd07a809a8eb30c7ddfab9ac886ed30dce8d","name":"https://git.kernel.org/stable/c/ab3dbd07a809a8eb30c7ddfab9ac886ed30dce8d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7b8fbcee3184d848b5aee085ca16d0cf05c9b641","name":"https://git.kernel.org/stable/c/7b8fbcee3184d848b5aee085ca16d0cf05c9b641","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b65365d2b1e6095c538d49baeb140dd1c166c1b3","name":"https://git.kernel.org/stable/c/b65365d2b1e6095c538d49baeb140dd1c166c1b3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7b7ebb7222a5524ce58e48cc9c6d688320ea6cfe","name":"https://git.kernel.org/stable/c/7b7ebb7222a5524ce58e48cc9c6d688320ea6cfe","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cf6b604011591865ae39ac82de8978c1120d17af","name":"https://git.kernel.org/stable/c/cf6b604011591865ae39ac82de8978c1120d17af","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46233","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46233","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 23721387c409087fd3b97e274f34d3ddc0970b74 7b8fbcee3184d848b5aee085ca16d0cf05c9b641 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 23721387c409087fd3b97e274f34d3ddc0970b74 7b7ebb7222a5524ce58e48cc9c6d688320ea6cfe git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 23721387c409087fd3b97e274f34d3ddc0970b74 b65365d2b1e6095c538d49baeb140dd1c166c1b3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 23721387c409087fd3b97e274f34d3ddc0970b74 ab3dbd07a809a8eb30c7ddfab9ac886ed30dce8d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 23721387c409087fd3b97e274f34d3ddc0970b74 cf6b604011591865ae39ac82de8978c1120d17af git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.5","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.140 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.90 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.32 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.9 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc4 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/batman-adv/bridge_loop_avoidance.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7b8fbcee3184d848b5aee085ca16d0cf05c9b641","status":"affected","version":"23721387c409087fd3b97e274f34d3ddc0970b74","versionType":"git"},{"lessThan":"7b7ebb7222a5524ce58e48cc9c6d688320ea6cfe","status":"affected","version":"23721387c409087fd3b97e274f34d3ddc0970b74","versionType":"git"},{"lessThan":"b65365d2b1e6095c538d49baeb140dd1c166c1b3","status":"affected","version":"23721387c409087fd3b97e274f34d3ddc0970b74","versionType":"git"},{"lessThan":"ab3dbd07a809a8eb30c7ddfab9ac886ed30dce8d","status":"affected","version":"23721387c409087fd3b97e274f34d3ddc0970b74","versionType":"git"},{"lessThan":"cf6b604011591865ae39ac82de8978c1120d17af","status":"affected","version":"23721387c409087fd3b97e274f34d3ddc0970b74","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/batman-adv/bridge_loop_avoidance.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.5"},{"lessThan":"3.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.140","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.90","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.32","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.140","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.90","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.32","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.9","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc4","versionStartIncluding":"3.5","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-05-28T09:40:55.019Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/7b8fbcee3184d848b5aee085ca16d0cf05c9b641"},{"url":"https://git.kernel.org/stable/c/7b7ebb7222a5524ce58e48cc9c6d688320ea6cfe"},{"url":"https://git.kernel.org/stable/c/b65365d2b1e6095c538d49baeb140dd1c166c1b3"},{"url":"https://git.kernel.org/stable/c/ab3dbd07a809a8eb30c7ddfab9ac886ed30dce8d"},{"url":"https://git.kernel.org/stable/c/cf6b604011591865ae39ac82de8978c1120d17af"}],"title":"batman-adv: bla: only purge non-released claims","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46233","datePublished":"2026-05-28T09:40:55.019Z","dateReserved":"2026-05-13T15:03:33.106Z","dateUpdated":"2026-05-28T09:40:55.019Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-28 10:16:38","lastModifiedDate":"2026-05-28 13:44:01","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46233","Ordinal":"1","Title":"batman-adv: bla: only purge non-released claims","CVE":"CVE-2026-46233","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46233","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"batman-adv: bla: only purge non-released claims"}]}}}