wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control() (CVE-2026-80949) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80949

wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control()

Answer in brief

CVE-2026-80949 records a Unknown severity vulnerability in wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control(). 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 11, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 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	>=dd43a01c5cdb811adeb09e6a2d2788f8aa0d0969 <fdb880a7d575efe8b5c7b5b819b96d9251a3937f \|\| >=dd43a01c5cdb811adeb09e6a2d2788f8aa0d0969 <261d7c7610b4b2f476382c88a2d1ae0cc5e07add \|\| >=dd43a01c5cdb811adeb09e6a2d2788f8aa0d0969 <ba04715ee672c336272be3ceb43bda9ffc33eb75 \|\| >=dd43a01c5cdb811adeb09e6a2d2788f8aa0d0969 <0d10db8e94fcb23a799789aaa696b4d8f937e207	fdb880a7d575efe8b5c7b5b819b96d9251a3937f, 261d7c7610b4b2f476382c88a2d1ae0cc5e07add, ba04715ee672c336272be3ceb43bda9ffc33eb75, 0d10db8e94fcb23a799789aaa696b4d8f937e207
Linux/Linuxgeneric	3.8	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to fdb880a7d575efe8b5c7b5b819b96d9251a3937f if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control() The memory allocated for buf is not freed in some of the error paths in brcmf_sdio_read_control(). Fix that by adding vfree() calls. [arend: rework as suggested by Johannes]

Quoted source text, attributed separately from HOL analysis.