CVE-2024-39292: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: um: Add winch to winch_handlers before registering winch IRQ Registering a winch IRQ is racy, an interrupt may occur before the winch is added to the winch_handlers list. If that happens, register_winch_irq() adds to that list a winch that is scheduled to be (or has already been) freed, causing a panic later in winch_cleanup(). Avoid the race by adding the winch to the winch_handlers list before registering the IRQ, and rolling back if um_request_irq() fails.

Affected products

• Linux Linux Kernel: before 2.6.23 (fixed in 2.6.23); from 4.19, before 4.19.316 (fixed in 4.19.316); from 5.4, before 5.4.278 (fixed in 5.4.278); from 5.10, before 5.10.219 (fixed in 5.10.219); from 5.15, before 5.15.161 (fixed in 5.15.161); from 6.1, before 6.1.93 (fixed in 6.1.93); …

Published 2024-06-24. Last modified 2026-08-04.