accel/amdxdna: Fix use-after-free of mm_struct in job scheduler (CVE-2026-68380) | HOL Guard CVE

High · CVSS 7.8CVE-2026-68380

accel/amdxdna: Fix use-after-free of mm_struct in job scheduler

Answer in brief

CVE-2026-68380 records a High severity (CVSS 7.8) vulnerability in accel/amdxdna: Fix use-after-free of mm_struct in job scheduler. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 10, 2026Updated Aug 17, 2026Source checked Sep 24, 2026First seen by HOL Aug 10, 2026Material review Aug 17, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=aac243092b707bb3018e951d470cc1a9bcbaba6c <6875ee2bef48f5d9f045d81a8a4d68893f768a8a \|\| >=aac243092b707bb3018e951d470cc1a9bcbaba6c <e8fadbffc19a233d1eedebfb8df0f522d1388280 \|\| >=aac243092b707bb3018e951d470cc1a9bcbaba6c <faebb7ba1ac65fa5810b640df02ce04e509fdc11	6875ee2bef48f5d9f045d81a8a4d68893f768a8a, e8fadbffc19a233d1eedebfb8df0f522d1388280, faebb7ba1ac65fa5810b640df02ce04e509fdc11
Linux/Linuxgeneric	6.14	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 6875ee2bef48f5d9f045d81a8a4d68893f768a8a if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 10, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix use-after-free of mm_struct in job scheduler amdxdna_cmd_submit() stores current->mm in job->mm without holding any reference. aie2_sched_job_run() later access job->mm from the DRM scheduler worker thread. With only a raw pointer and no structural reference, the mm_struct can be freed before the scheduler runs the job. Fix this by calling mmgrab() to hold a structural mm_count reference for the lifetime of the job, paired with mmdrop() in every cleanup path.

Quoted source text, attributed separately from HOL analysis.