CVE-2023-52693

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.

• linux linux kernel (>= 2.6.39 < 4.19.306) • linux linux kernel (>= 4.20 < 5.4.268) • linux linux kernel (>= 5.5 < 5.10.209) • linux linux kernel (>= 5.11 < 5.15.148) • linux linux kernel (>= 5.16 < 6.1.75) • linux linux kernel (>= 6.2 < 6.6.14) • linux linux kernel (>= 6.7 < 6.7.2) • debian debian linux 10.0