CVE-2026-23357 | BDVDB-2026-322607 Detail
LinuxLinux
Description#
In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix deadlock in error path of mcp251x_open The mcp251x_open() function call free_irq() in its error path with the mpc_lock mutex held. But if an interrupt already occurred the interrupt handler will be waiting for the mpc_lock and free_irq() will deadlock waiting for the handler to finish. This issue is similar to the one fixed in commit 7dd9c26bd6cf ("can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open") but for the error path. To solve this issue move the call to free_irq() after the lock is released. Setting `priv->force_quit = 1` beforehand ensure that the IRQ handler will exit right away once it acquired the lock.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/739454057572cb0948658d1142f3fa2c6966465c
- https://git.kernel.org/stable/c/416c18ecddafab0ed09be1e7b9d2f448f3d4db16
- https://git.kernel.org/stable/c/256f0cff6e946c570392bda1d01a65e789a7afd0
- https://git.kernel.org/stable/c/b73832292cd914e87a55e863ba4413a907e7db6b
- https://git.kernel.org/stable/c/38063cc435b69d56e76f947c10d336fcb2953508
- https://git.kernel.org/stable/c/d27f12c3f5e85efc479896af4a69eccb37f75e8e
- https://git.kernel.org/stable/c/e728f444c913a91d290d1824b4770780bbd6378e
- https://git.kernel.org/stable/c/ab3f894de216f4a62adc3b57e9191888cbf26885
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.