CVE-2026-89870

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-89870

Key Details

CVE	CVE-2026-89870
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-19
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89870
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89870

Source

Reference

NVD

CVE