CVE-2024-39292

MEDIUM

Linux Kernel - Use-After-Free in Winch IRQ Handler

Title source: llm
STIX 2.1

Description

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.

References (9)

Core 9
Core References

Scores

CVSS v3 5.5
EPSS 0.0023
EPSS Percentile 14.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-415
Status published
Products (27)
linux/Kernel 2.6.23 - 4.19.316linux
linux/Kernel 4.20.0 - 5.4.278linux
linux/Kernel 5.11.0 - 5.15.161linux
linux/Kernel 5.16.0 - 6.1.93linux
linux/Kernel 5.5.0 - 5.10.219linux
linux/Kernel 6.2.0 - 6.6.33linux
linux/Kernel 6.7.0 - 6.9.4linux
Linux/Linux < 2.6.23
Linux/Linux 2.6.23
Linux/Linux 4.19.316 - 4.19.*
... and 17 more
Published Jun 24, 2024
Tracked Since Feb 18, 2026