media: v4l2-async: Unregister sub-device if asc_list is empty (CVE-2026-93101) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-93101

media: v4l2-async: Unregister sub-device if asc_list is empty

Answer in brief

CVE-2026-93101 records a Unknown severity vulnerability in media: v4l2-async: Unregister sub-device if asc_list is empty. 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 Sep 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. 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	>=28a1295795d85a25f2e7dd391c43969e95fcb341 <c7201bd08cad791858337e33ffcd90d8ae4147c2 \|\| >=28a1295795d85a25f2e7dd391c43969e95fcb341 <e190320cebe921f99973c984ac53f317061a011f \|\| >=28a1295795d85a25f2e7dd391c43969e95fcb341 <65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32 \|\| >=28a1295795d85a25f2e7dd391c43969e95fcb341 <9fb74dce5c650cb23b60f6ba0ffcd5024e948a75 \|\| >=28a1295795d85a25f2e7dd391c43969e95fcb341 <4e72f13d58c4245c177a9d5f54579345554f354d	c7201bd08cad791858337e33ffcd90d8ae4147c2, e190320cebe921f99973c984ac53f317061a011f, 65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32, 9fb74dce5c650cb23b60f6ba0ffcd5024e948a75, 4e72f13d58c4245c177a9d5f54579345554f354d
Linux/Linuxgeneric	6.6	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to c7201bd08cad791858337e33ffcd90d8ae4147c2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

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

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-async: Unregister sub-device if asc_list is empty When my em28xx USB device that uses the i2c tvp5150 driver is disconnected, it crashes. The cause is that the tvp5150 i2c module uses v4l2_async, but the em28xx driver does not since it predates v4l2_async. In that corner case sd->asc_list is empty, so v4l2_async_unregister_subdev() never calls v4l2_device_unregister_subdev(). Modify the code so that, if sd->asc_list is empty, v4l2_device_unregister_subdev() is still called.

Quoted source text, attributed separately from HOL analysis.