CVE-2023-52693

Published: May 18, 2024Last modified: May 18, 2024

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.

Status

References

• https://git.kernel.org/stable/c/1e3a2b9b4039bb4d136dca59fb31e06465e056f3
• https://git.kernel.org/stable/c/2124c5bc22948fc4d09a23db4a8acdccc7d21e95
• https://git.kernel.org/stable/c/39af144b6d01d9b40f52e5d773e653957e6c379c
• https://git.kernel.org/stable/c/3a370502a5681986f9828e43be75ce26c6ab24af
• https://git.kernel.org/stable/c/556f02699d33c1f40b1b31bd25828ce08fa165d8
• https://git.kernel.org/stable/c/72884ce4e10417b1233b614bf134da852df0f15f
• https://git.kernel.org/stable/c/c4e1a0ef0b4782854c9b77a333ca912b392bed2f
• https://git.kernel.org/stable/c/ccd45faf4973746c4f30ea41eec864e5cf191099
• https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
• https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html