CVE-2026-23362

Description

In the Linux kernel, the following vulnerability has been resolved:can: bcm: fix locking for bcm_op runtime updatesCommit c2aba69d0c36 (can: bcm: add locking for bcm_op runtime updates)added a locking for some variables that can be modified at runtime whenupdating 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 oneexception: When the RX_RTR_FRAME flag is set a predefined CAN frame issent when a specific RTR frame is received. Therefore the rx bcm_op usesbcm_can_tx() which uses the bcm_tx_lock that was only initialized inbcm_tx_setup(). Add the missing spin_lock_init() when allocating thebcm_op in bcm_rx_setup() to handle the RTR case properly.

Risk Information

Base Score

5.5

MODERATE

Vector

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

EPSS Score

Exploitation Probability

0.032

Associated Vulnerability

No records found

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234