dm: fix race when loading and unloading a table

Answer in brief

CVE-2026-89998 records a Unknown severity vulnerability in dm: fix race when loading and unloading a table. The current sources do not mark it as known exploited. The current feed maps 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 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
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). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b02e35b81176c7d61dd441cc7a2e5c324a82444b \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0ea6e5ad4a5817e91f11b4cc1e022e575ed2e7ca \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a1af1884c960b98c621b6fe2fea1216b78c02152 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <af1f32ccf8051f4691ced11feb452b9d13561727 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <00ad6f9ed27f91925d4d3fb7aab50a60d774f998 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5380c7f6335cc6d77eb77d065105e81155c4d9d3 \|\| >=0 <6.1.188 \|\| >=0 <6.6.157 \|\| >=0 <6.12.110 \|\| >=0 <6.18.51 \|\| >=0 <7.2.5	b02e35b81176c7d61dd441cc7a2e5c324a82444b, 0ea6e5ad4a5817e91f11b4cc1e022e575ed2e7ca, a1af1884c960b98c621b6fe2fea1216b78c02152, af1f32ccf8051f4691ced11feb452b9d13561727, 00ad6f9ed27f91925d4d3fb7aab50a60d774f998, 5380c7f6335cc6d77eb77d065105e81155c4d9d3, 6.1.188, 6.6.157, 6.12.110, 6.18.51, 7.2.5

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux.
Review the reported fix. Update Linux/Linux to b02e35b81176c7d61dd441cc7a2e5c324a82444b if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: dm: fix race when loading and unloading a table If the userspace calls two concurrent table load ioctls and one of them succeeds and the other fails, there is a race condition because dm_setup_md_queue walks &md->table_devices without any lock. If the walk races with dm_table_destroy -> free_devices -> dm_put_table_device, there is access to invalid memory. Fix this race by extending the lock over the list walk.

Quoted source text, attributed separately from HOL analysis.