CVE Catalog

CVE-2026-72484

Low risk· EPSS 12%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

12th percentile - higher than 12% of all known CVEs

Summary

In the Linux kernel, the most: video driver has a double free vulnerability during failed video device registration. The function comp_register_videodev() frees the video_device, but the error path in __video_register_device() also frees it, leading to a double free. The fix uses video_device_release_empty() during registration to avoid double freeing.

Risk Assessment

Double free can lead to system crash or potentially be exploited by an attacker to execute code in the kernel. However, it requires local access and the ability to trigger a failed registration.

Recommendation

Apply the patch from the Linux kernel that changes the way video_device is freed during registration. Update the kernel to a patched version.

Other vulnerabilities in Linux kernel

See all
Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: staging: most: video: avoid double free on video register failure comp_register_videodev() allocates a video_device with video_device_alloc() and releases it if video_register_device() fails. This can double free the video_device when __video_register_device() reaches device_register() and that call fails: video_register_device() -> __video_register_device() -> device_register() fails -> put_device(&vdev->dev) -> v4l2_device_release() -> vdev->release(vdev) -> video_device_release(vdev) comp_register_videodev() -> video_device_release(mdev->vdev) Use video_device_release_empty() while registering the device so that registration failure paths do not free mdev->vdev through vdev->release(). comp_register_videodev() then releases mdev->vdev exactly once on failure. Restore video_device_release() after successful registration so the registered device keeps its normal lifetime handling. This issue was found by a static analysis tool I am developing.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS