{"id":"CVE-2025-38004","revision":"e775281b8fed4681913519071ba91243","records":[{"revision":"e775281b8fed4681913519071ba91243","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-38004","aliases":[],"title":"can: bcm: add locking for bcm_op runtime updates","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: add locking for bcm_op runtime updates\n\nThe CAN broadcast manager (CAN BCM) can send a sequence of CAN frames via\nhrtimer. The content and also the length of the sequence can be changed\nresp reduced at runtime where the 'currframe' counter is then set to zero.\n\nAlthough this appeared to be a safe operation the updates of 'currframe'\ncan be triggered from user space and hrtimer context in bcm_can_tx().\nAnderson Nascimento created a proof of concept that triggered a KASAN\nslab-out-of-bounds read access which can be prevented with a spin_lock_bh.\n\nAt the rework of bcm_can_tx() the 'count' variable has been moved into\nthe protected section as this variable can be modified from both contexts\ntoo.","state":0,"publishedAt":"2025-06-08T10:34:56.484+00:00","modifiedAt":"2026-10-15T21:52:06.494+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\": \"8f1c022541bf5a923c8d6fa483112c15250f30a4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"7595de7bc56e0e52b74e56c90f7e247bf626d628\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"fbd8fdc2b218e979cfe422b139b8f74c12419d1f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"2a437b86ac5a9893c902f30ef66815bf13587bf6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"76c84c3728178b2d38d5604e399dfe8b0752645e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"cc55dd28c20a6611e30596019b3b2f636819a4c0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"c4e8a172501e677ebd8ea9d9161d97dc4df56fbd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffd980f976e7fd666c2e61bf8ab35107efd11828\",\n                            \"lessThan\": \"c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7\",\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\": \"5.4.294\",\n                            \"lessThanOrEqual\": \"5.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.238\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.185\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.141\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.93\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.31\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.14.9\",\n                            \"lessThanOrEqual\": \"6.14.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.15\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H","score":7.3,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/8f1c022541bf5a923c8d6fa483112c15250f30a4","https://git.kernel.org/stable/c/7595de7bc56e0e52b74e56c90f7e247bf626d628","https://git.kernel.org/stable/c/fbd8fdc2b218e979cfe422b139b8f74c12419d1f","https://git.kernel.org/stable/c/2a437b86ac5a9893c902f30ef66815bf13587bf6","https://git.kernel.org/stable/c/76c84c3728178b2d38d5604e399dfe8b0752645e","https://git.kernel.org/stable/c/cc55dd28c20a6611e30596019b3b2f636819a4c0","https://git.kernel.org/stable/c/c4e8a172501e677ebd8ea9d9161d97dc4df56fbd","https://git.kernel.org/stable/c/c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38004","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-38004","identifiers":["CVE-2025-38004"]},"retained":false,"historicalAffected":[]}],"coverage":[]}