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Vulnerability record

CVE-2026-68445

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Full record read. Reported values and explicit gaps below come from the tracked record. Tracker data as of: .

What it is

Reported

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.… Source description excerpt; complete tracked detail loads below.

Source reported · Source: CVE record · Source last published: · Source last updated: · Tracker data as of:

What is affected

Reported

Linux — Linux. Product-level identification only; no affected-version conclusion is available from this field.

Source reported · Source: CVE record · Source last published: · Source last updated: · Tracker data as of:

Urgency and basis

Reported

Track · 114.8

Tracker computed · Tracker decision tier from the evidence detailed below · Source last updated: · Tracker data as of:

Exploitation evidence

Not reported

Not reported by tracked sources.

What to do

Not reported

Not reported by tracked sources.

Tracker inference. Guidance from the decision tier: No action now. Remediate within standard update timelines. Monitor for change.

Evidence detail

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