CVE-2026-23357

A flaw was found in the Linux kernel's mcp251x Controller Area Network (CAN) driver. A local attacker could trigger a deadlock condition within the mcp251x_open() function's error handling path. This occurs when the free_irq() function is called while the mpc_lock mutex is held and an interrupt simultaneously occurs, causing the interrupt handler to wait for the same lock. This can lead to a system hang, resulting in a denial of service.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.