{"id":"CVE-2026-72115","revision":"5b51f3738f784366a78e5a0df08f3136","records":[{"revision":"5b51f3738f784366a78e5a0df08f3136","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72115","aliases":[],"title":"can: bcm: track a single source interface for ANYDEV timeout/throttle ops","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: track a single source interface for ANYDEV timeout/throttle ops\n\nAn ANYDEV rx op (ifindex == 0) with an active RX timeout and/or\nthrottle timer has no defined semantics when matching frames arrive\nfrom several interfaces: bcm_rx_handler() can run concurrently for\nthe same op on different CPUs, racing hrtimer_cancel()/\nbcm_rx_starttimer() against bcm_rx_timeout_handler() and causing\nspurious RX_TIMEOUT notifications and last_frames corruption. The\nsame concurrency lets throttled multiplex frames from different\ninterfaces clobber the single rx_ifindex/rx_stamp fields shared by\nthe op.\n\nAdd op->if_detected to track the first interface that delivers a\nmatching frame while a timeout/throttle timer is configured, and\nreject frames from any other interface for that op. The claim is\ndecided in bcm_rx_handler() before hrtimer_cancel() touches\nop->timer, so a rejected frame can never disturb the claimed\ninterface's watchdog. RTR-mode ops are excluded via RX_RTR_FRAME,\nindependent of kt_ival1/kt_ival2, since those may briefly hold a\nstale value from an earlier non-RTR configuration.\n\nThe claim is released in bcm_notify() on NETDEV_UNREGISTER and in\nbcm_rx_setup() when SETTIMER reconfigures the timer values.\n\nA (re-)claim is only possible on CAN devices in NETREG_REGISTERED\ndev->reg_state to cover the release in bcm_notify() where reg_state\nbecomes NETREG_UNREGISTERING until synchronize_net().","state":0,"publishedAt":"2026-08-15T05:52:55.524+00:00","modifiedAt":"2026-10-16T18:44:56.703+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/bcm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"f147f48837cb1426521f5b3c3b3134c71128a25d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"57cf104da4cf450ae9c16801a3164604b801d2cc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"03dfe347c398fa41a7e30e8dc538f12568c183e6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"18b45251e74e35668f0dd0c470549384ae191ecf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"3ff8c24b421070a2db99a5cdb86edc9ff339418e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"eca8b44d51fc6ab61022258ec968e55e3073b79e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"b6317022b685a430a3ae420456716e3c0c02ef4b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"2f5976f54a04e9f18b25283036ac3136be453b17\",\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/bcm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.25\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.25\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.148\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.101\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":8.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/f147f48837cb1426521f5b3c3b3134c71128a25d","https://git.kernel.org/stable/c/57cf104da4cf450ae9c16801a3164604b801d2cc","https://git.kernel.org/stable/c/03dfe347c398fa41a7e30e8dc538f12568c183e6","https://git.kernel.org/stable/c/18b45251e74e35668f0dd0c470549384ae191ecf","https://git.kernel.org/stable/c/3ff8c24b421070a2db99a5cdb86edc9ff339418e","https://git.kernel.org/stable/c/eca8b44d51fc6ab61022258ec968e55e3073b79e","https://git.kernel.org/stable/c/b6317022b685a430a3ae420456716e3c0c02ef4b","https://git.kernel.org/stable/c/2f5976f54a04e9f18b25283036ac3136be453b17"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72115","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72115","identifiers":["CVE-2026-72115"]},"retained":false,"historicalAffected":[]}],"coverage":[]}