CVE-2026-72116

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72116", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.906Z", "datePublished": "2026-08-15T05:52:56.260Z", "dateUpdated": "2026-10-16T18:44:56.837Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:36:05.976Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: fix stale rx/tx ops after device removal\n\nRX: an RX_SETUP update(!) for an existing op skipped can_rx_register()\nunconditionally, even when a concurrent NETDEV_UNREGISTER had already\ntorn down its registration (op->rx_reg_dev == NULL). This silently\ndid not re-enable frame delivery for that updated filter. bcm_rx_setup()\nnow re-registers in that case, while leaving rx_ops with ifindex = 0\n(all CAN devices) which never carry a tracked rx_reg_dev registered as-is.\n\nTX: bcm_notify() only handled bo->rx_ops on NETDEV_UNREGISTER, leaving\ntx_ops with an active cyclic transmission re-arming its hrtimer\nindefinitely to execute bcm_tx_timeout_handler(). Cancelling the hrtimer\nprevents the runaway timer and any injection into a later reused ifindex,\nsince nothing else calls bcm_can_tx() for the op until an explicit\nTX_SETUP update re-arms it.\n\nUnlike bcm_rx_unreg(), which clears the tracked rx_reg_dev for rx_ops,\nthe ifindex is intentionally left unchanged for tx_ops. bcm_tx_setup()\nalways rejects ifindex 0, so clearing it would strand the op: neither a\nlater TX_SETUP (bcm_find_op()) nor TX_DELETE (bcm_delete_tx_op()) could\never find it again, since both require an exact ifindex match."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached only via local PF_CAN/CAN_BCM syscalls (socket/connect/sendmsg TX_SETUP or RX_SETUP); bcm_tx_timeout_handler() is driven by a local hrtimer, not by remote network services or CAN bus frames alone.\nAC:L - An attacker controls both sides by arming cyclic TX with SETTIMER/STARTTIMER, then triggering or waiting for NETDEV_UNREGISTER (e.g., concurrent ip link del in a user namespace) while ifindex reuse is normal kernel behavior, making injection reliably achievable.\nPR:L - can_create(), bcm_connect(), and bcm_sendmsg() perform no capability checks; any local user with CAN access (or CAP_NET_ADMIN in an unprivileged user namespace to create vcan) can open BCM sockets and program cyclic TX/RX ops.\nUI:N - Exploitation requires only the attacker opening a BCM socket and sending TX_SETUP/RX_SETUP messages; no victim action such as mounting media or opening files is needed once local CAN access exists.\nS:U - Impact is unauthorized CAN transmission/monitoring disruption within the same kernel host; it does not cross VM, container, or IOMMU security boundaries even when frames reach an adjacent vehicle or factory CAN segment.\nC:N - The flaw causes stale timer-driven transmission and missed RX re-registration, not kernel memory disclosure; no out-of-bounds read, UAF, or other information-leak primitive is present in this bug.\nI:H - After NETDEV_UNREGISTER, orphaned tx_ops keep bcm_can_tx() running with a stale ifindex, so attacker-crafted cyclic CAN frames can be injected onto any later netdev that reuses that ifindex, including safety-critical automotive or industrial buses.\nA:H - Uncancelled hrtimers on stale tx_ops re-arm bcm_tx_timeout_handler() indefinitely after device removal, causing persistent timer/softirq CPU consumption, and the RX_SETUP path can silently stop frame delivery after unregister races."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/can/bcm.c"], "versions": [{"version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "d30a36066ed3abefb72ae18901f71841ba18b350", "status": "affected", "versionType": "git"}, {"version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "ca829677ffa2de5d79e06366e19ac1e4f5cc78dd", "status": "affected", "versionType": "git"}, {"version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "9517d8fb0b191398d35b9b7f8c719c1cc7761cb1", "status": "affected", "versionType": "git"}, {"version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "60d8a7942f4ed2d975207aaeba1adb576707e53d", "status": "affected", "versionType": "git"}, {"version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "f749e4564952d60e96930c09f2be99955d07c22e", "status": "affected", "versionType": "git"}, {"version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "6be3e1fedf03eab36a2c09d755d1171287b2014b", "status": "affected", "versionType": "git"}, {"version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "b31d0933509c5a35c0be5736a2ce8df0d1bf112c", "status": "affected", "versionType": "git"}, {"version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "3b762c0d950383ab7a002686c9136b9aa55d2d70", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/can/bcm.c"], "versions": [{"version": "2.6.25", "status": "affected"}, {"version": "0", "lessThan": "2.6.25", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "2.6.25", "versionEndExcluding": "5.10.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d30a36066ed3abefb72ae18901f71841ba18b350"}, {"url": "https://git.kernel.org/stable/c/ca829677ffa2de5d79e06366e19ac1e4f5cc78dd"}, {"url": "https://git.kernel.org/stable/c/9517d8fb0b191398d35b9b7f8c719c1cc7761cb1"}, {"url": "https://git.kernel.org/stable/c/60d8a7942f4ed2d975207aaeba1adb576707e53d"}, {"url": "https://git.kernel.org/stable/c/f749e4564952d60e96930c09f2be99955d07c22e"}, {"url": "https://git.kernel.org/stable/c/6be3e1fedf03eab36a2c09d755d1171287b2014b"}, {"url": "https://git.kernel.org/stable/c/b31d0933509c5a35c0be5736a2ce8df0d1bf112c"}, {"url": "https://git.kernel.org/stable/c/3b762c0d950383ab7a002686c9136b9aa55d2d70"}], "title": "can: bcm: fix stale rx/tx ops after device removal", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-72116", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T18:41:52.725992Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:44:56.837Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-72116", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T18:41:52.725992Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:41:53.336Z"}}], "cna": {"title": "can: bcm: fix stale rx/tx ops after device removal", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.1, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached only via local PF_CAN/CAN_BCM syscalls (socket/connect/sendmsg TX_SETUP or RX_SETUP); bcm_tx_timeout_handler() is driven by a local hrtimer, not by remote network services or CAN bus frames alone.\nAC:L - An attacker controls both sides by arming cyclic TX with SETTIMER/STARTTIMER, then triggering or waiting for NETDEV_UNREGISTER (e.g., concurrent ip link del in a user namespace) while ifindex reuse is normal kernel behavior, making injection reliably achievable.\nPR:L - can_create(), bcm_connect(), and bcm_sendmsg() perform no capability checks; any local user with CAN access (or CAP_NET_ADMIN in an unprivileged user namespace to create vcan) can open BCM sockets and program cyclic TX/RX ops.\nUI:N - Exploitation requires only the attacker opening a BCM socket and sending TX_SETUP/RX_SETUP messages; no victim action such as mounting media or opening files is needed once local CAN access exists.\nS:U - Impact is unauthorized CAN transmission/monitoring disruption within the same kernel host; it does not cross VM, container, or IOMMU security boundaries even when frames reach an adjacent vehicle or factory CAN segment.\nC:N - The flaw causes stale timer-driven transmission and missed RX re-registration, not kernel memory disclosure; no out-of-bounds read, UAF, or other information-leak primitive is present in this bug.\nI:H - After NETDEV_UNREGISTER, orphaned tx_ops keep bcm_can_tx() running with a stale ifindex, so attacker-crafted cyclic CAN frames can be injected onto any later netdev that reuses that ifindex, including safety-critical automotive or industrial buses.\nA:H - Uncancelled hrtimers on stale tx_ops re-arm bcm_tx_timeout_handler() indefinitely after device removal, causing persistent timer/softirq CPU consumption, and the RX_SETUP path can silently stop frame delivery after unregister races."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "d30a36066ed3abefb72ae18901f71841ba18b350", "versionType": "git"}, {"status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "ca829677ffa2de5d79e06366e19ac1e4f5cc78dd", "versionType": "git"}, {"status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "9517d8fb0b191398d35b9b7f8c719c1cc7761cb1", "versionType": "git"}, {"status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "60d8a7942f4ed2d975207aaeba1adb576707e53d", "versionType": "git"}, {"status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "f749e4564952d60e96930c09f2be99955d07c22e", "versionType": "git"}, {"status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "6be3e1fedf03eab36a2c09d755d1171287b2014b", "versionType": "git"}, {"status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "b31d0933509c5a35c0be5736a2ce8df0d1bf112c", "versionType": "git"}, {"status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "lessThan": "3b762c0d950383ab7a002686c9136b9aa55d2d70", "versionType": "git"}], "programFiles": ["net/can/bcm.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.25"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.25", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.265", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.216", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.183", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.148", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.101", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.42", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.5", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/can/bcm.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/d30a36066ed3abefb72ae18901f71841ba18b350"}, {"url": "https://git.kernel.org/stable/c/ca829677ffa2de5d79e06366e19ac1e4f5cc78dd"}, {"url": "https://git.kernel.org/stable/c/9517d8fb0b191398d35b9b7f8c719c1cc7761cb1"}, {"url": "https://git.kernel.org/stable/c/60d8a7942f4ed2d975207aaeba1adb576707e53d"}, {"url": "https://git.kernel.org/stable/c/f749e4564952d60e96930c09f2be99955d07c22e"}, {"url": "https://git.kernel.org/stable/c/6be3e1fedf03eab36a2c09d755d1171287b2014b"}, {"url": "https://git.kernel.org/stable/c/b31d0933509c5a35c0be5736a2ce8df0d1bf112c"}, {"url": "https://git.kernel.org/stable/c/3b762c0d950383ab7a002686c9136b9aa55d2d70"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: fix stale rx/tx ops after device removal\n\nRX: an RX_SETUP update(!) for an existing op skipped can_rx_register()\nunconditionally, even when a concurrent NETDEV_UNREGISTER had already\ntorn down its registration (op->rx_reg_dev == NULL). This silently\ndid not re-enable frame delivery for that updated filter. bcm_rx_setup()\nnow re-registers in that case, while leaving rx_ops with ifindex = 0\n(all CAN devices) which never carry a tracked rx_reg_dev registered as-is.\n\nTX: bcm_notify() only handled bo->rx_ops on NETDEV_UNREGISTER, leaving\ntx_ops with an active cyclic transmission re-arming its hrtimer\nindefinitely to execute bcm_tx_timeout_handler(). Cancelling the hrtimer\nprevents the runaway timer and any injection into a later reused ifindex,\nsince nothing else calls bcm_can_tx() for the op until an explicit\nTX_SETUP update re-arms it.\n\nUnlike bcm_rx_unreg(), which clears the tracked rx_reg_dev for rx_ops,\nthe ifindex is intentionally left unchanged for tx_ops. bcm_tx_setup()\nalways rejects ifindex 0, so clearing it would strand the op: neither a\nlater TX_SETUP (bcm_find_op()) nor TX_DELETE (bcm_delete_tx_op()) could\never find it again, since both require an exact ifindex match."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.265", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.216", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.183", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.148", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.101", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.42", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.5", "versionStartIncluding": "2.6.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "2.6.25"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:36:05.976Z"}}}, "cveMetadata": {"cveId": "CVE-2026-72116", "state": "PUBLISHED", "dateUpdated": "2026-10-16T18:44:56.837Z", "dateReserved": "2026-08-09T03:40:39.906Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-15T05:52:56.260Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/can/bcm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d30a36066ed3abefb72ae18901f71841ba18b350", "status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "versionType": "git"}, {"lessThan": "ca829677ffa2de5d79e06366e19ac1e4f5cc78dd", "status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "versionType": "git"}, {"lessThan": "9517d8fb0b191398d35b9b7f8c719c1cc7761cb1", "status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "versionType": "git"}, {"lessThan": "60d8a7942f4ed2d975207aaeba1adb576707e53d", "status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "versionType": "git"}, {"lessThan": "f749e4564952d60e96930c09f2be99955d07c22e", "status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "versionType": "git"}, {"lessThan": "6be3e1fedf03eab36a2c09d755d1171287b2014b", "status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "versionType": "git"}, {"lessThan": "b31d0933509c5a35c0be5736a2ce8df0d1bf112c", "status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "versionType": "git"}, {"lessThan": "3b762c0d950383ab7a002686c9136b9aa55d2d70", "status": "affected", "version": "ffd980f976e7fd666c2e61bf8ab35107efd11828", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/can/bcm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.25"}, {"lessThan": "2.6.25", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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: bcm: fix stale rx/tx ops after device removal\n\nRX: an RX_SETUP update(!) for an existing op skipped can_rx_register()\nunconditionally, even when a concurrent NETDEV_UNREGISTER had already\ntorn down its registration (op->rx_reg_dev == NULL). This silently\ndid not re-enable frame delivery for that updated filter. bcm_rx_setup()\nnow re-registers in that case, while leaving rx_ops with ifindex = 0\n(all CAN devices) which never carry a tracked rx_reg_dev registered as-is.\n\nTX: bcm_notify() only handled bo->rx_ops on NETDEV_UNREGISTER, leaving\ntx_ops with an active cyclic transmission re-arming its hrtimer\nindefinitely to execute bcm_tx_timeout_handler(). Cancelling the hrtimer\nprevents the runaway timer and any injection into a later reused ifindex,\nsince nothing else calls bcm_can_tx() for the op until an explicit\nTX_SETUP update re-arms it.\n\nUnlike bcm_rx_unreg(), which clears the tracked rx_reg_dev for rx_ops,\nthe ifindex is intentionally left unchanged for tx_ops. bcm_tx_setup()\nalways rejects ifindex 0, so clearing it would strand the op: neither a\nlater TX_SETUP (bcm_find_op()) nor TX_DELETE (bcm_delete_tx_op()) could\never find it again, since both require an exact ifindex match."}], "id": "CVE-2026-72116", "lastModified": "2026-10-16T19:17:09.237", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72116", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T18:41:52.725992Z", "version": "2.0.3"}}]}, "published": "2026-08-15T06:21:26.020", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3b762c0d950383ab7a002686c9136b9aa55d2d70"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/60d8a7942f4ed2d975207aaeba1adb576707e53d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6be3e1fedf03eab36a2c09d755d1171287b2014b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9517d8fb0b191398d35b9b7f8c719c1cc7761cb1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b31d0933509c5a35c0be5736a2ce8df0d1bf112c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ca829677ffa2de5d79e06366e19ac1e4f5cc78dd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d30a36066ed3abefb72ae18901f71841ba18b350"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f749e4564952d60e96930c09f2be99955d07c22e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: can: bcm: fix stale rx/tx ops after device removal", "id": "2516260", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516260"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's Broadcom Controller Area Network (CAN) bus driver. When a CAN device is removed, the driver may fail to properly manage its receive and transmit operations. This can lead to receive filters not being correctly re-enabled after updates, preventing expected data processing. Additionally, transmit timers might continue to run indefinitely, potentially causing system instability due to resource exhaustion or unintended data injection into a re-used network interface."], "name": "CVE-2026-72116", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72116\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72116\nhttps://lore.kernel.org/linux-cve-announce/2026081527-CVE-2026-72116-f863@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ffd980f976e7fd666c2e61bf8ab35107efd11828,60d8a7942f4ed2d975207aaeba1adb576707e53d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ffd980f976e7fd666c2e61bf8ab35107efd11828,f749e4564952d60e96930c09f2be99955d07c22e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ffd980f976e7fd666c2e61bf8ab35107efd11828,6be3e186edfedf03eab36a2c09d755d1171287b2014b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ffd980f976e7fd666c2e61bf8ab35107efd11828,b31d0933509c5a35c0be5736a2ce8df0d1bf112c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ffd980f976e7fd666c2e61bf8ab35107efd11828,3b762c0d950383ab7a002686c9136b9aa55d2d70)"}}], "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": "2.6.25"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.25)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.148,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.101,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.42,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.5,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "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": "2026-08-15T14:00:08.750464+00:00", "updated": "2026-08-18T05:00:09.159566+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}