CVE-2023-52693: Debian Linux

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: 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.

Affected products

• Debian Debian Linux: version 10.0 only
• Linux Linux Kernel: from 2.6.39, before 4.19.306 (fixed in 4.19.306); from 4.20, before 5.4.268 (fixed in 5.4.268); from 5.5, before 5.10.209 (fixed in 5.10.209); from 5.11, before 5.15.148 (fixed in 5.15.148); from 5.16, before 6.1.75 (fixed in 6.1.75); from 6.2, before 6.6.14 (fixed in 6.6.14); …

Published 2024-05-17. Last modified 2026-06-17.