nvmet: fix memory leak of bio integrity

Answer in brief

CVE-2025-38405 records a Unknown severity vulnerability in nvmet: fix memory leak of bio integrity. 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 Jul 25, 2025Updated Aug 5, 2026Source checked Sep 20, 2026First seen by HOL Aug 5, 2026Material review Aug 5, 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	6.11	Not reported
Linux/Linuxgeneric	>=bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f <431e58d56fcb5ff1f9eb630724a922e0d2a941df \|\| >=bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f <2e2028fcf924d1c6df017033c8d6e28b735a0508 \|\| >=bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f <190f4c2c863af7cc5bb354b70e0805f06419c038 \|\| 64149da0fddbbfe43e11c0348d8c8b4171dae3a2 \|\| >=6.10.10 <6.11	431e58d56fcb5ff1f9eb630724a922e0d2a941df, 2e2028fcf924d1c6df017033c8d6e28b735a0508, 190f4c2c863af7cc5bb354b70e0805f06419c038, 6.11

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 431e58d56fcb5ff1f9eb630724a922e0d2a941df if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jul 25, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 5, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: nvmet: fix memory leak of bio integrity If nvmet receives commands with metadata there is a continuous memory leak of kmalloc-128 slab or more precisely bio->bi_integrity. Since commit bf4c89fc8797 ("block: don't call bio_uninit from bio_endio") each user of bio_init has to use bio_uninit as well. Otherwise the bio integrity is not getting free. Nvmet uses bio_init for inline bios. Uninit the inline bio to complete deallocation of integrity in bio.

Quoted source text, attributed separately from HOL analysis.