ACPI: video: Fix use-after-free in acpi_video_switch_brightness() (Linux Linux)

CVE-2025-40211
Not available

At a glance

Source
NVD
EPSS
EPSS 0.21 % · percentile 11 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

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 ]

References

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected 8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 < 3f803ccf5a0c043e7c8b83f6665b082401fc8bee ; affected 8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 < ba1704316492a0496c69334338ea1fdbf4c2fd34 ; affected 8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 < bc78a4f51d548c1ccc3d1967c2b394bf687c86e9 ; affected 8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 < a63a5b6fb508d78fe57ae3b159d9ef3af7ba80e9 ; affected 8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 < 4e85246ec0d019dfba86ba54d841ef6694f97149 ; affected 8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7 < de5fc93275a4a459fe2f7cb746984f2ab3e8292a
Linux · Linuxaffected 3.17 ; unaffected 0 < 3.17 ; unaffected 5.4.302 ≤ 5.4.* ; unaffected 5.10.247 ≤ 5.10.* ; unaffected 5.15.197 ≤ 5.15.* ; unaffected 6.1.159 ≤ 6.1.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD