CVE-2026-72119High· 7.8▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: can: bcm: extend bcm_tx_lock usage for data and timer updates Stage new CAN frame content for an existing tx op into a kmalloc()'d buffer and validate it there, mirror…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
can: bcm: extend bcm_tx_lock usage for data and timer updates
Stage new CAN frame content for an existing tx op into a kmalloc()'d buffer and validate it there, mirroring the approach already used in bcm_rx_setup(). Only copy the validated data into op->frames while holding op->bcm_tx_lock, so bcm_can_tx() and bcm_tx_timeout_handler() can no longer observe a partially updated or unvalidated frame.
Add a missing error path for memcpy_from_msg() when copying CAN frame data from userspace.
Also move the kt_ival1/kt_ival2/ival1/ival2 updates in bcm_tx_setup() under op->bcm_tx_lock, and read kt_ival1/kt_ival2/count under the same lock in bcm_tx_set_expiry() and bcm_tx_timeout_handler(), closing the torn 64-bit ktime_t read on 32-bit platforms.
Linux >= 7595de7bc56e0e52b74e56c90f7e247bf626d628 < a538b072ee074c9b41b9d9c15a6861a963e30755Linux >= fbd8fdc2b218e979cfe422b139b8f74c12419d1f < 63422347b4c782f429748b2a09cd3cf3b77e6abdLinux >= 2a437b86ac5a9893c902f30ef66815bf13587bf6 < 37917e432e50b7de2b64230974380132a30f7270Linux >= 76c84c3728178b2d38d5604e399dfe8b0752645e < 52f06e7603780de100233713ddaf971d422e10efLinux >= cc55dd28c20a6611e30596019b3b2f636819a4c0 < 972fd66bb08fdef1090abe43196ca8da07216d13Linux >= c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7 < bd46f55dec608daa44b45dcf3328517630ad8e40Linux >= c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7 < 337f966c00662d81ad82cf5a4bbb150b2e32c0d4Linux >= c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7 < 12ce799f7ab1e05bd8fbf79e46f403bfe5597ebcLinux 8f1c022541bf5a923c8d6fa483112c15250f30a4Linux c4e8a172501e677ebd8ea9d9161d97dc4df56fbdLinux >= 5.10.238 < 5.10.265Linux >= 5.15.185 < 5.15.216Linux >= 6.1.141 < 6.1.183Linux >= 6.6.93 < 6.6.148Linux >= 6.12.31 < 6.12.101Linux >= 5.4.294 < 5.5Linux >= 6.14.9 < 6.15Linux 6.15Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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