{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72126", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.907Z", "datePublished": "2026-08-15T05:53:03.642Z", "dateUpdated": "2026-08-15T05:53:03.642Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-15T05:53:03.642Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: isotp: use unconditional synchronize_rcu() in isotp_release()\n\nisotp_notify() unregisters the (RCU) CAN filters via can_rx_unregister()\nand clears so->bound without waiting for a grace period. isotp_release()\nuses so->bound to decide whether it needs to call synchronize_rcu()\nbefore cancelling so->rxtimer, so when NETDEV_UNREGISTER runs first it\nskips that synchronize_rcu() and can cancel the timer while an\nin-flight isotp_rcv() is still executing and about to re-arm it via\nisotp_send_fc(), leading to a use-after-free timer callback on the\nfreed socket.\n\nsakisho-bot remarked a problem with rtnl_lock held in isotp_notify(),\ntherefore make isotp_release() always call synchronize_rcu() before\ncancelling the timers, regardless of so->bound. This still closes the\noriginal race (isotp_notify() clearing so->bound without waiting for\nin-flight isotp_rcv() callers before isotp_release() cancels the RX\ntimer) without adding any RCU wait to the netdevice notifier path."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/can/isotp.c"], "versions": [{"version": "22bfa94db2ef6900c790884fa9461486516626e9", "lessThan": "945d9894502cd9124f5d676181c542ed2000f7c0", "status": "affected", "versionType": "git"}, {"version": "14a4696bc3118ba49da28f79280e1d55603aa737", "lessThan": "59672aa4bcd8d32172c1ff6a179583981d6acabc", "status": "affected", "versionType": "git"}, {"version": "14a4696bc3118ba49da28f79280e1d55603aa737", "lessThan": "15413a082df69175c2f96aeab4c26fe1ff7cff03", "status": "affected", "versionType": "git"}, {"version": "14a4696bc3118ba49da28f79280e1d55603aa737", "lessThan": "6280eda96e0707264849fa7d036fed873c1f8a6d", "status": "affected", "versionType": "git"}, {"version": "14a4696bc3118ba49da28f79280e1d55603aa737", "lessThan": "cb6abc584a1bfab107ac003d64948a4aef1730aa", "status": "affected", "versionType": "git"}, {"version": "14a4696bc3118ba49da28f79280e1d55603aa737", "lessThan": "b88a511308779c225005d7994b8744561bdbafbc", "status": "affected", "versionType": "git"}, {"version": "14a4696bc3118ba49da28f79280e1d55603aa737", "lessThan": "b8278ff605187ef3fa0f2705e93251cce4c4f8ee", "status": "affected", "versionType": "git"}, {"version": "14a4696bc3118ba49da28f79280e1d55603aa737", "lessThan": "9b1a02e0d980ac6b0e36a90378f847062f81d7e4", "status": "affected", "versionType": "git"}, {"version": "80c6ddf771df2ef786f28c1ca5919b3f1080091b", "status": "affected", "versionType": "git"}, {"version": "ebf91625b3e404bd2b4b694c7ee71c1e8f8bd08f", "status": "affected", "versionType": "git"}, {"version": "5.10.50", "lessThan": "5.10.261", "status": "affected", "versionType": "semver"}, {"version": "5.12.17", "lessThan": "5.13", "status": "affected", "versionType": "semver"}, {"version": "5.13.2", "lessThan": "5.14", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/can/isotp.c"], "versions": [{"version": "5.14", "status": "affected"}, {"version": "0", "lessThan": "5.14", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc4", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.50", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.2-rc4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12.17"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/945d9894502cd9124f5d676181c542ed2000f7c0"}, {"url": "https://git.kernel.org/stable/c/59672aa4bcd8d32172c1ff6a179583981d6acabc"}, {"url": "https://git.kernel.org/stable/c/15413a082df69175c2f96aeab4c26fe1ff7cff03"}, {"url": "https://git.kernel.org/stable/c/6280eda96e0707264849fa7d036fed873c1f8a6d"}, {"url": "https://git.kernel.org/stable/c/cb6abc584a1bfab107ac003d64948a4aef1730aa"}, {"url": "https://git.kernel.org/stable/c/b88a511308779c225005d7994b8744561bdbafbc"}, {"url": "https://git.kernel.org/stable/c/b8278ff605187ef3fa0f2705e93251cce4c4f8ee"}, {"url": "https://git.kernel.org/stable/c/9b1a02e0d980ac6b0e36a90378f847062f81d7e4"}], "title": "can: isotp: use unconditional synchronize_rcu() in isotp_release()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/can/isotp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "945d9894502cd9124f5d676181c542ed2000f7c0", "status": "affected", "version": "22bfa94db2ef6900c790884fa9461486516626e9", "versionType": "git"}, {"lessThan": "59672aa4bcd8d32172c1ff6a179583981d6acabc", "status": "affected", "version": "14a4696bc3118ba49da28f79280e1d55603aa737", "versionType": "git"}, {"lessThan": "15413a082df69175c2f96aeab4c26fe1ff7cff03", "status": "affected", "version": "14a4696bc3118ba49da28f79280e1d55603aa737", "versionType": "git"}, {"lessThan": "6280eda96e0707264849fa7d036fed873c1f8a6d", "status": "affected", "version": "14a4696bc3118ba49da28f79280e1d55603aa737", "versionType": "git"}, {"lessThan": "cb6abc584a1bfab107ac003d64948a4aef1730aa", "status": "affected", "version": "14a4696bc3118ba49da28f79280e1d55603aa737", "versionType": "git"}, {"lessThan": "b88a511308779c225005d7994b8744561bdbafbc", "status": "affected", "version": "14a4696bc3118ba49da28f79280e1d55603aa737", "versionType": "git"}, {"lessThan": "b8278ff605187ef3fa0f2705e93251cce4c4f8ee", "status": "affected", "version": "14a4696bc3118ba49da28f79280e1d55603aa737", "versionType": "git"}, {"lessThan": "9b1a02e0d980ac6b0e36a90378f847062f81d7e4", "status": "affected", "version": "14a4696bc3118ba49da28f79280e1d55603aa737", "versionType": "git"}, {"status": "affected", "version": "80c6ddf771df2ef786f28c1ca5919b3f1080091b", "versionType": "git"}, {"status": "affected", "version": "ebf91625b3e404bd2b4b694c7ee71c1e8f8bd08f", "versionType": "git"}, {"lessThan": "5.10.261", "status": "affected", "version": "5.10.50", "versionType": "semver"}, {"lessThan": "5.13", "status": "affected", "version": "5.12.17", "versionType": "semver"}, {"lessThan": "5.14", "status": "affected", "version": "5.13.2", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/can/isotp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.14"}, {"lessThan": "5.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc4", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: isotp: use unconditional synchronize_rcu() in isotp_release()\n\nisotp_notify() unregisters the (RCU) CAN filters via can_rx_unregister()\nand clears so->bound without waiting for a grace period. isotp_release()\nuses so->bound to decide whether it needs to call synchronize_rcu()\nbefore cancelling so->rxtimer, so when NETDEV_UNREGISTER runs first it\nskips that synchronize_rcu() and can cancel the timer while an\nin-flight isotp_rcv() is still executing and about to re-arm it via\nisotp_send_fc(), leading to a use-after-free timer callback on the\nfreed socket.\n\nsakisho-bot remarked a problem with rtnl_lock held in isotp_notify(),\ntherefore make isotp_release() always call synchronize_rcu() before\ncancelling the timers, regardless of so->bound. This still closes the\noriginal race (isotp_notify() clearing so->bound without waiting for\nin-flight isotp_rcv() callers before isotp_release() cancels the RX\ntimer) without adding any RCU wait to the netdevice notifier path."}], "id": "CVE-2026-72126", "lastModified": "2026-08-15T06:21:29.963", "metrics": {}, "published": "2026-08-15T06:21:29.963", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/15413a082df69175c2f96aeab4c26fe1ff7cff03"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/59672aa4bcd8d32172c1ff6a179583981d6acabc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6280eda96e0707264849fa7d036fed873c1f8a6d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/945d9894502cd9124f5d676181c542ed2000f7c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9b1a02e0d980ac6b0e36a90378f847062f81d7e4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b8278ff605187ef3fa0f2705e93251cce4c4f8ee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b88a511308779c225005d7994b8744561bdbafbc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cb6abc584a1bfab107ac003d64948a4aef1730aa"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[22bfa94db2ef6900c790884fa9461486516626e9,945d9894502cd9124f5d676181c542ed2000f7c0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14a4696bc3118ba49da28f79280e1d55603aa737,59672aa4bcd8d32172c1ff6a179583981d6acabc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14a4696bc3118ba49da28f79280e1d55603aa737,15413a082df69175c2f96aeab4c26fe1ff7cff03)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14a4696bc3118ba49da28f79280e1d55603aa737,6280eda96e0707264849fa7d036fed873c1f8a6d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14a4696bc3118ba49da28f79280e1d55603aa737,cb6abc584a1bfab107ac003d64948a4aef1730aa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14a4696bc3118ba49da28f79280e1d55603aa737,b88a511308779c225005d7994b8744561bdbafbc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14a4696bc3118ba49da28f79280e1d55603aa737,b8278ff605187ef3fa0f2705e93251cce4c4f8ee)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[14a4696bc3118ba49da28f79280e1d55603aa737,9b1a02e0d980ac6b0e36a90378f847062f81d7e4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "80c6ddf771df2ef786f28c1ca5919b3f1080091b"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "ebf91625b3e404bd2b4b694c7ee71c1e8f8bd08f"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.10.50,5.10.261)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.12.17,5.13)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.13.2,5.14)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "5.14"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc4,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T13:30:04.536252+00:00", "updated": "2026-08-15T20:15:02.789808+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416", "CWE-362"]}