Description
In the Linux kernel, the following vulnerability has been resolved: ACPI: video: Fix use-after-free in acpi_video_switch_brightness() The switch_brightness_work delayed work accesses device->brightness and device->backlight, freed by acpi_video_dev_unregister_backlight() during device removal. If the work executes after acpi_video_bus_unregister_backlight() frees these resources, it causes a use-after-free when acpi_video_switch_brightness() dereferences device->brightness or device->backlight. Fix this by calling cancel_delayed_work_sync() for each device's switch_brightness_work in acpi_video_bus_remove_notify_handler() after removing the notify handler that queues the work. This ensures the work completes before the memory is freed. [ rjw: Changelog edit ]
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 to < 3f803ccf5a0c043e7c8b83f6665b082401fc8beeaffected8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 to < ba1704316492a0496c69334338ea1fdbf4c2fd34affected8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 to < bc78a4f51d548c1ccc3d1967c2b394bf687c86e9affected8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 to < a63a5b6fb508d78fe57ae3b159d9ef3af7ba80e9affected8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 to < 4e85246ec0d019dfba86ba54d841ef6694f97149affected8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 to < de5fc93275a4a459fe2f7cb746984f2ab3e8292aaffected8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 to < 293125536ef5521328815fa7c76d5f9eb1635659affected8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 to < 8f067aa59430266386b83c18b983ca583faa6a11affected
Linux Linux
Default version status: affected
3.17affected0 to < 3.17unaffected5.4.302 to ≤ 5.4.*unaffected5.10.247 to ≤ 5.10.*unaffected5.15.197 to ≤ 5.15.*unaffected6.1.159 to ≤ 6.1.*unaffected6.6.117 to ≤ 6.6.*unaffected6.12.58 to ≤ 6.12.*unaffected6.17.8 to ≤ 6.17.*unaffected6.18 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/3f803ccf5a0c043e7c8b83f6665b082401fc8bee ↗
- https://git.kernel.org/stable/c/ba1704316492a0496c69334338ea1fdbf4c2fd34 ↗
- https://git.kernel.org/stable/c/bc78a4f51d548c1ccc3d1967c2b394bf687c86e9 ↗
- https://git.kernel.org/stable/c/a63a5b6fb508d78fe57ae3b159d9ef3af7ba80e9 ↗
- https://git.kernel.org/stable/c/4e85246ec0d019dfba86ba54d841ef6694f97149 ↗
- https://git.kernel.org/stable/c/de5fc93275a4a459fe2f7cb746984f2ab3e8292a ↗
- https://git.kernel.org/stable/c/293125536ef5521328815fa7c76d5f9eb1635659 ↗
- https://git.kernel.org/stable/c/8f067aa59430266386b83c18b983ca583faa6a11 ↗