CVE-2024-39292

Name	CVE-2024-39292
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3840-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	buster	4.19.249-2	vulnerable
	buster (security)	4.19.316-1	fixed
	bullseye (security), bullseye	5.10.218-1	vulnerable
	bookworm	6.1.94-1	fixed
	bookworm (security)	6.1.90-1	vulnerable
	trixie	6.8.12-1	vulnerable
	sid	6.9.7-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
linux	source	buster	4.19.316-1	DLA-3840-1
linux	source	bookworm	6.1.94-1
linux	source	(unstable)	6.9.7-1

https://git.kernel.org/linus/a0fbbd36c156b9f7b2276871d499c9943dfe5101 (6.10-rc1)