CVE-2026-23362

In the Linux kernel, the following vulnerability has been resolved: can: bcm: fix locking for bcm_op runtime updates Commit c2aba69d0c36 ("can: bcm: add locking for bcm_op runtime updates") added a locking for some variables that can be modified at runtime when updating the sending bcm_op with a new TX_SETUP command in bcm_tx_setup(). Usually the RX_SETUP only handles and filters incoming traffic with one exception: When the RX_RTR_FRAME flag is set a predefined CAN frame is sent when a specific RTR frame is received. Therefore the rx bcm_op uses bcm_can_tx() which uses the bcm_tx_lock that was only initialized in bcm_tx_setup(). Add the missing spin_lock_init() when allocating the bcm_op in bcm_rx_setup() to handle the RTR case properly.

• linux linux kernel (>= 5.4.294 < 5.5) • linux linux kernel (>= 5.10.238 < 5.10.253) • linux linux kernel (>= 5.15.185 < 5.15.203) • linux linux kernel (>= 6.1.141 < 6.1.167) • linux linux kernel (>= 6.6.93 < 6.6.130) • linux linux kernel (>= 6.12.31 < 6.12.77) • linux linux kernel (>= 6.14.9 < 6.15) • linux linux kernel (>= 6.15.1 < 6.18.17) • linux linux kernel (>= 6.19 < 6.19.7) • linux linux kernel 6.15 • linux linux kernel 7.0