md/bitmap: resume array on backlog_store() error path (CVE-2026-90390) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90390

md/bitmap: resume array on backlog_store() error path

Answer in brief

CVE-2026-90390 records a Unknown severity vulnerability in md/bitmap: resume array on backlog_store() error path. 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	>=58226942ad3d1423785f815ede5bcc832574f2ea <03aad318f0a1f039dddf98739e705fdca3bf0d86 \|\| >=58226942ad3d1423785f815ede5bcc832574f2ea <6763fb409a0b4106676a52cf934440d9484b32c8 \|\| >=58226942ad3d1423785f815ede5bcc832574f2ea <cc543e769b97d563b089b9e0ebf8ad361d15076f \|\| >=58226942ad3d1423785f815ede5bcc832574f2ea <2911cd0a0f4366a7e06832bc5f0a7fdcc138e4dc	03aad318f0a1f039dddf98739e705fdca3bf0d86, 6763fb409a0b4106676a52cf934440d9484b32c8, cc543e769b97d563b089b9e0ebf8ad361d15076f, 2911cd0a0f4366a7e06832bc5f0a7fdcc138e4dc
Linux/Linuxgeneric	6.7	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 03aad318f0a1f039dddf98739e705fdca3bf0d86 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: md/bitmap: resume array on backlog_store() error path backlog_store() suspends the array before checking whether a write-mostly device exists. If no such device exists, the error path only unlocks reconfig_mutex and leaves the array suspended, blocking subsequent I/O. Use mddev_unlock_and_resume() to release both states.

Quoted source text, attributed separately from HOL analysis.