{"id":"CVE-2025-71182","revision":null,"records":[{"revision":"bb08ae49252c47ebaebc842e7b4d2b68","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-71182","aliases":[],"title":"can: j1939: make j1939_session_activate() fail if device is no longer registered","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: j1939: make j1939_session_activate() fail if device is no longer registered\n\nsyzbot is still reporting\n\n unregister_netdevice: waiting for vcan0 to become free. Usage count = 2\n\neven after commit 93a27b5891b8 (\"can: j1939: add missing calls in\nNETDEV_UNREGISTER notification handler\") was added. A debug printk() patch\nfound that j1939_session_activate() can succeed even after\nj1939_cancel_active_session() from j1939_netdev_notify(NETDEV_UNREGISTER)\nhas completed.\n\nSince j1939_cancel_active_session() is processed with the session list lock\nheld, checking ndev->reg_state in j1939_session_activate() with the session\nlist lock held can reliably close the race window.","state":0,"publishedAt":"2026-01-31T11:38:55.157+00:00","modifiedAt":"2026-10-19T18:15:16.548+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/can/j1939/transport.c\"\n ],\n \"versions\": [\n {\n \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\",\n \"lessThan\": \"ebb0dfd718dd31c8d3600612ca4b7207ec3d923a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\",\n \"lessThan\": \"c3a4316e3c746af415c0fd6c6d489ad13f53714d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\",\n \"lessThan\": \"46ca9dc978923c5e1247a9e9519240ba7ace413c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\",\n \"lessThan\": \"78d87b72cebe2a993fd5b017e9f14fb6278f2eae\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\",\n \"lessThan\": \"ba6f0d1832eeb5eb3a6dc5cb30e0f720b3cb3536\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\",\n \"lessThan\": \"79dd3f1d9dd310c2af89b09c71f34d93973b200f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\",\n \"lessThan\": \"5d5602236f5db19e8b337a2cd87a90ace5ea776d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/can/j1939/transport.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.4\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.4\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.248\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.198\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.161\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.121\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.66\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.6\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.19\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/ebb0dfd718dd31c8d3600612ca4b7207ec3d923a","https://git.kernel.org/stable/c/c3a4316e3c746af415c0fd6c6d489ad13f53714d","https://git.kernel.org/stable/c/46ca9dc978923c5e1247a9e9519240ba7ace413c","https://git.kernel.org/stable/c/78d87b72cebe2a993fd5b017e9f14fb6278f2eae","https://git.kernel.org/stable/c/ba6f0d1832eeb5eb3a6dc5cb30e0f720b3cb3536","https://git.kernel.org/stable/c/79dd3f1d9dd310c2af89b09c71f34d93973b200f","https://git.kernel.org/stable/c/5d5602236f5db19e8b337a2cd87a90ace5ea776d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-71182","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-71182","identifiers":["CVE-2025-71182"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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