CVE-2026-68206

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-68206

Key Details

CVE	CVE-2026-68206
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
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: v4l2-ctrls: validate HEVC active reference counts

HEVC slice parameters are shared stateless V4L2 controls, but the common

validation path does not verify the active L0/L1 reference counts before

driver-specific code consumes them.

The original report came from Cedrus, but the active count bounds are

not Cedrus-specific. Validate them in the common HEVC slice control path

so stateless HEVC drivers get the same basic guarantees as soon as the

control is queued.

Do not reject ref_idx_l0/ref_idx_l1 entries here. Existing userspace may

use out-of-range sentinel values such as 0xff for missing references, and

some hardware can use that information for concealment. Keep this common

check limited to the active reference counts. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-68206
CVE	https://www.cve.org/CVERecord?id=CVE-2026-68206

Source

Reference

NVD

CVE