mptcp: prevent race between disconnect() and rtx (CVE-2026-97567) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97567

mptcp: prevent race between disconnect() and rtx

Answer in brief

CVE-2026-97567 records a Unknown severity vulnerability in mptcp: prevent race between disconnect() and rtx. 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 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 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	>=b29fcfb54cd70caca5b11c80d8d238854938884a <374da2b9be1280695ce41f108334a8f16e3e54be \|\| >=b29fcfb54cd70caca5b11c80d8d238854938884a <69a7b2a912672159dda7dcf325d27752d448dfdf \|\| >=b29fcfb54cd70caca5b11c80d8d238854938884a <85c580b0d8590520ae00a15c29e9fb9c99427a3e	374da2b9be1280695ce41f108334a8f16e3e54be, 69a7b2a912672159dda7dcf325d27752d448dfdf, 85c580b0d8590520ae00a15c29e9fb9c99427a3e
Linux/Linuxgeneric	5.17	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 374da2b9be1280695ce41f108334a8f16e3e54be if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: mptcp: prevent race between disconnect() and rtx Sashiko noted that the two event can race, leading to inconsistent status. Prevent the race using the synchronous timer stop operation.

Quoted source text, attributed separately from HOL analysis.