{"id":"CVE-2026-72119","summary":"can: bcm: extend bcm_tx_lock usage for data and timer updates","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: extend bcm_tx_lock usage for data and timer updates\n\nStage new CAN frame content for an existing tx op into a kmalloc()'d\nbuffer and validate it there, mirroring the approach already used in\nbcm_rx_setup(). Only copy the validated data into op-\u003eframes while\nholding op-\u003ebcm_tx_lock, so bcm_can_tx() and bcm_tx_timeout_handler()\ncan no longer observe a partially updated or unvalidated frame.\n\nAdd a missing error path for memcpy_from_msg() when copying CAN frame\ndata from userspace.\n\nAlso move the kt_ival1/kt_ival2/ival1/ival2 updates in bcm_tx_setup()\nunder op-\u003ebcm_tx_lock, and read kt_ival1/kt_ival2/count under the same\nlock in bcm_tx_set_expiry() and bcm_tx_timeout_handler(), closing the\ntorn 64-bit ktime_t read on 32-bit platforms.","modified":"2026-10-28T02:30:47.795265388Z","published":"2026-08-15T05:52:58.479Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72119.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/12ce799f7ab1e05bd8fbf79e46f403bfe5597ebc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/337f966c00662d81ad82cf5a4bbb150b2e32c0d4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/37917e432e50b7de2b64230974380132a30f7270"},{"type":"WEB","url":"https://git.kernel.org/stable/c/52f06e7603780de100233713ddaf971d422e10ef"},{"type":"WEB","url":"https://git.kernel.org/stable/c/63422347b4c782f429748b2a09cd3cf3b77e6abd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/972fd66bb08fdef1090abe43196ca8da07216d13"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a538b072ee074c9b41b9d9c15a6861a963e30755"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bd46f55dec608daa44b45dcf3328517630ad8e40"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72119.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72119"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7595de7bc56e0e52b74e56c90f7e247bf626d628"},{"fixed":"a538b072ee074c9b41b9d9c15a6861a963e30755"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"fbd8fdc2b218e979cfe422b139b8f74c12419d1f"},{"fixed":"63422347b4c782f429748b2a09cd3cf3b77e6abd"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2a437b86ac5a9893c902f30ef66815bf13587bf6"},{"fixed":"37917e432e50b7de2b64230974380132a30f7270"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"76c84c3728178b2d38d5604e399dfe8b0752645e"},{"fixed":"52f06e7603780de100233713ddaf971d422e10ef"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"cc55dd28c20a6611e30596019b3b2f636819a4c0"},{"fixed":"972fd66bb08fdef1090abe43196ca8da07216d13"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7"},{"fixed":"bd46f55dec608daa44b45dcf3328517630ad8e40"},{"fixed":"337f966c00662d81ad82cf5a4bbb150b2e32c0d4"},{"fixed":"12ce799f7ab1e05bd8fbf79e46f403bfe5597ebc"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.10.238"},{"fixed":"5.10.265"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.15.185"},{"fixed":"5.15.216"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.1.141"},{"fixed":"6.1.183"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.6.93"},{"fixed":"6.6.148"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.12.31"},{"fixed":"6.12.101"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.4.294"},{"fixed":"5.5"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.14.9"},{"fixed":"6.15"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8f1c022541bf5a923c8d6fa483112c15250f30a4"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c4e8a172501e677ebd8ea9d9161d97dc4df56fbd"}]}],"versions":["v5.10.264","v5.10.263","v5.10.262","v5.10.261","v5.10.260","v5.10.259","v5.10.258","v5.10.257","v5.10.256","v5.10.255","v5.10.254","v5.10.253","v5.10.252","v5.10.251","v5.10.250","v5.10.249","v5.10.248","v5.10.247","v5.10.246","v5.10.245","v5.10.244","v5.10.243","v5.10.242","v5.10.241","v5.10.240","v5.10.239","v5.10.238","v5.15.215","v5.15.214","v5.15.213","v5.15.212","v5.15.211","v5.15.210","v5.15.209","v5.15.208","v5.15.207","v5.15.206","v5.15.205","v5.15.204","v5.15.203","v5.15.202","v5.15.201","v5.15.200","v5.15.199","v5.15.198","v5.15.197","v5.15.196","v5.15.195","v5.15.194","v5.15.193","v5.15.192","v5.15.191","v5.15.190","v5.15.189","v5.15.188","v5.15.187","v5.15.186","v5.15.185","v6.1.182","v6.1.181","v6.1.180","v6.1.179","v6.1.178","v6.1.177","v6.1.176","v6.1.175","v6.1.174","v6.1.173","v6.1.172","v6.1.171","v6.1.170","v6.1.169","v6.1.168","v6.1.167","v6.1.166","v6.1.165","v6.1.164","v6.1.163","v6.1.162","v6.1.161","v6.1.160","v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