CVE-2026-68445

Last refreshed2026-10-30

Status: UPDATED | Advisory ID: CVE-2026-68445

Key Details

CVE	CVE-2026-68445
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-30
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:

drm/vc4: Prevent shader BO mappings from becoming writable

vc4_gem_object_mmap() rejects a writable mapping of a validated shader

BO, but leaves VM_MAYWRITE set. Userspace can map the BO read-only and

then turn it writable with mprotect().

Validated shader BOs must stay read-only: the validator checks the

instructions once and the GPU trusts them afterwards. A writable

mapping lets userspace rewrite the code after validation, bypassing the

validator.

Clear VM_MAYWRITE on the read-only path so the mapping cannot be

upgraded, as i915 already does for its read-only objects. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-68445
CVE	https://www.cve.org/CVERecord?id=CVE-2026-68445

Source

Reference

NVD

CVE