{"api_version":"1","generated_at":"2026-07-20T14:42:14+00:00","cve":"CVE-2026-64096","urls":{"html":"https://cve.report/CVE-2026-64096","api":"https://cve.report/api/cve/CVE-2026-64096.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64096","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64096"},"summary":{"title":"batman-adv: mcast: fix use-after-free in orig_node RCU release","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: mcast: fix use-after-free in orig_node RCU release\n\nbatadv_mcast_purge_orig() removes entries from RCU-protected hlists but\ndoes not wait for an RCU grace period before returning. Concurrent RCU\nreaders may still accesses references to those entries at the point of\nremoval. RCU-protected readers trying to operate on entries like\norig->mcast_want_all_ipv6_node will then access already freed memory.\n\nFix this by moving batadv_mcast_purge_orig() to batadv_orig_node_release(),\njust before the call_rcu() invocation. This ensures RCU readers that were\nactive at purge time have drained before the orig_node memory is reclaimed.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:50","updated_at":"2026-07-19 16:17:50"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ced48f55bac73f0822eae90509e51b42b4f646c8","name":"https://git.kernel.org/stable/c/ced48f55bac73f0822eae90509e51b42b4f646c8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/edfb1e094104a50f931553dc82ac59246569fd32","name":"https://git.kernel.org/stable/c/edfb1e094104a50f931553dc82ac59246569fd32","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8a3707653ab658e082ccd992e92594e01b09a3fc","name":"https://git.kernel.org/stable/c/8a3707653ab658e082ccd992e92594e01b09a3fc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/70bcb678561f0fb58f33270fc73f12f3be72b878","name":"https://git.kernel.org/stable/c/70bcb678561f0fb58f33270fc73f12f3be72b878","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc","name":"https://git.kernel.org/stable/c/20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/78a63fb2f7d5630d1c1f2859a20d4e4226863b41","name":"https://git.kernel.org/stable/c/78a63fb2f7d5630d1c1f2859a20d4e4226863b41","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/aef897c9d2dd0d9339167fb82b62beff68d076cb","name":"https://git.kernel.org/stable/c/aef897c9d2dd0d9339167fb82b62beff68d076cb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ff3a4487ead475e27b43280b8ee3d8464fe280e1","name":"https://git.kernel.org/stable/c/ff3a4487ead475e27b43280b8ee3d8464fe280e1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64096","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64096","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ab49886e3da73b6b35ece21006e191910427bb30 ff3a4487ead475e27b43280b8ee3d8464fe280e1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ab49886e3da73b6b35ece21006e191910427bb30 78a63fb2f7d5630d1c1f2859a20d4e4226863b41 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ab49886e3da73b6b35ece21006e191910427bb30 ced48f55bac73f0822eae90509e51b42b4f646c8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ab49886e3da73b6b35ece21006e191910427bb30 70bcb678561f0fb58f33270fc73f12f3be72b878 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ab49886e3da73b6b35ece21006e191910427bb30 aef897c9d2dd0d9339167fb82b62beff68d076cb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ab49886e3da73b6b35ece21006e191910427bb30 8a3707653ab658e082ccd992e92594e01b09a3fc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ab49886e3da73b6b35ece21006e191910427bb30 edfb1e094104a50f931553dc82ac59246569fd32 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ab49886e3da73b6b35ece21006e191910427bb30 20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.258 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.142 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * 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/originator.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ff3a4487ead475e27b43280b8ee3d8464fe280e1","status":"affected","version":"ab49886e3da73b6b35ece21006e191910427bb30","versionType":"git"},{"lessThan":"78a63fb2f7d5630d1c1f2859a20d4e4226863b41","status":"affected","version":"ab49886e3da73b6b35ece21006e191910427bb30","versionType":"git"},{"lessThan":"ced48f55bac73f0822eae90509e51b42b4f646c8","status":"affected","version":"ab49886e3da73b6b35ece21006e191910427bb30","versionType":"git"},{"lessThan":"70bcb678561f0fb58f33270fc73f12f3be72b878","status":"affected","version":"ab49886e3da73b6b35ece21006e191910427bb30","versionType":"git"},{"lessThan":"aef897c9d2dd0d9339167fb82b62beff68d076cb","status":"affected","version":"ab49886e3da73b6b35ece21006e191910427bb30","versionType":"git"},{"lessThan":"8a3707653ab658e082ccd992e92594e01b09a3fc","status":"affected","version":"ab49886e3da73b6b35ece21006e191910427bb30","versionType":"git"},{"lessThan":"edfb1e094104a50f931553dc82ac59246569fd32","status":"affected","version":"ab49886e3da73b6b35ece21006e191910427bb30","versionType":"git"},{"lessThan":"20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc","status":"affected","version":"ab49886e3da73b6b35ece21006e191910427bb30","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/batman-adv/originator.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.15"},{"lessThan":"3.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.142","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.258","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.142","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"3.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: mcast: fix use-after-free in orig_node RCU release\n\nbatadv_mcast_purge_orig() removes entries from RCU-protected hlists but\ndoes not wait for an RCU grace period before returning. Concurrent RCU\nreaders may still accesses references to those entries at the point of\nremoval. RCU-protected readers trying to operate on entries like\norig->mcast_want_all_ipv6_node will then access already freed memory.\n\nFix this by moving batadv_mcast_purge_orig() to batadv_orig_node_release(),\njust before the call_rcu() invocation. This ensures RCU readers that were\nactive at purge time have drained before the orig_node memory is reclaimed."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:02.969Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ff3a4487ead475e27b43280b8ee3d8464fe280e1"},{"url":"https://git.kernel.org/stable/c/78a63fb2f7d5630d1c1f2859a20d4e4226863b41"},{"url":"https://git.kernel.org/stable/c/ced48f55bac73f0822eae90509e51b42b4f646c8"},{"url":"https://git.kernel.org/stable/c/70bcb678561f0fb58f33270fc73f12f3be72b878"},{"url":"https://git.kernel.org/stable/c/aef897c9d2dd0d9339167fb82b62beff68d076cb"},{"url":"https://git.kernel.org/stable/c/8a3707653ab658e082ccd992e92594e01b09a3fc"},{"url":"https://git.kernel.org/stable/c/edfb1e094104a50f931553dc82ac59246569fd32"},{"url":"https://git.kernel.org/stable/c/20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc"}],"title":"batman-adv: mcast: fix use-after-free in orig_node RCU release","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64096","datePublished":"2026-07-19T15:40:02.969Z","dateReserved":"2026-07-19T07:54:57.033Z","dateUpdated":"2026-07-19T15:40:02.969Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:50","lastModifiedDate":"2026-07-19 16:17:50","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64096","Ordinal":"1","Title":"batman-adv: mcast: fix use-after-free in orig_node RCU release","CVE":"CVE-2026-64096","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64096","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: mcast: fix use-after-free in orig_node RCU release\n\nbatadv_mcast_purge_orig() removes entries from RCU-protected hlists but\ndoes not wait for an RCU grace period before returning. Concurrent RCU\nreaders may still accesses references to those entries at the point of\nremoval. RCU-protected readers trying to operate on entries like\norig->mcast_want_all_ipv6_node will then access already freed memory.\n\nFix this by moving batadv_mcast_purge_orig() to batadv_orig_node_release(),\njust before the call_rcu() invocation. This ensures RCU readers that were\nactive at purge time have drained before the orig_node memory is reclaimed.","Type":"Description","Title":"batman-adv: mcast: fix use-after-free in orig_node RCU release"}]}}}