GHSA-57pc-f5j8-25x4

GHSA-57pc-f5j8-25x4 PUBLISHED CVSS 5.5 MEDIUM

Record from GitHub Advisory Database · Published March 25, 2026

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.

Risk scores

CVSS 3.1

5.5

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Timeline

Mar 25, 2026 CVE Published
Apr 19, 2026 Security Advisory

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vulnetix vdb vuln GHSA-57pc-f5j8-25x4
vulnetix vdb fixes GHSA-57pc-f5j8-25x4

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