Description
In the Linux kernel, the following vulnerability has been resolved: media: zoran: Avoid freeing a registered video_device twice zoran_init_video_device() installs zoran_vdev_release() as the video_device release callback through zoran_template. After video_register_device() succeeds, video_unregister_device() drops the registered video_device reference and the V4L2 core eventually invokes that release callback, which kfree()s the video_device. zoran_exit_video_devices() called video_unregister_device() and then kfree(zr->video_dev), so device teardown could free the same video_device twice. Remove the direct kfree() and clear the cached pointer after unregistering. The pre-registration failure path keeps its manual free because the video_device was not registered there. This issue was found by a static analysis checker and confirmed by manual source review.
References8
- git.kernel.org/stable/c/0735e0b5a96761a9ce277a238e834008ad92a0a5
- git.kernel.org/stable/c/29792762e65d4eefbe75b6048c59763fd844191a
- git.kernel.org/stable/c/3ad6cf27505017a6794f5f96c31218c2291e951b
- git.kernel.org/stable/c/4d99d8d0d895489064783601a516bd45812fa992
- git.kernel.org/stable/c/672dbccf4351370dad002d3c78dbb29ca1588f22
- git.kernel.org/stable/c/99277a387802eb6c1907c73f09d746908cc64913
- git.kernel.org/stable/c/c4acac8cdc005b2d14b6cef5e215d264212857f3
- git.kernel.org/stable/c/f1c4f3885df1f09bcab5296d86834d104f865e86
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 8 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.