CVE-2023-52693

Name	CVE-2023-52693
Description	In the Linux kernel, the following vulnerability has been resolved: ACPI: video: check for error while searching for backlight device parent If acpi_get_parent() called in acpi_video_dev_register_backlight() fails, for example, because acpi_ut_acquire_mutex() fails inside acpi_get_parent), this can lead to incorrect (uninitialized) acpi_parent handle being passed to acpi_get_pci_dev() for detecting the parent pci device. Check acpi_get_parent() result and set parent device only in case of success. Found by Linux Verification Center (linuxtesting.org) with SVACE.
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, DLA-3841-1

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	5.10.209-2	fixed
	bullseye (security)	5.10.218-1	fixed
	bookworm	6.1.76-1	fixed
	bookworm (security)	6.1.90-1	fixed
	sid, trixie	6.8.12-1	fixed
linux-5.10 (PTS)	buster (security)	5.10.218-1~deb10u1	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	bullseye	5.10.209-1
linux	source	bookworm	6.1.76-1
linux	source	(unstable)	6.6.15-1
linux-5.10	source	buster	5.10.209-2~deb10u1	DLA-3841-1

https://git.kernel.org/linus/ccd45faf4973746c4f30ea41eec864e5cf191099 (6.8-rc1)