svcrdma: Reject connection when transport allocation fails (CVE-2026-89531) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89531

svcrdma: Reject connection when transport allocation fails

Answer in brief

CVE-2026-89531 records a Unknown severity vulnerability in svcrdma: Reject connection when transport allocation fails. 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	>=377f9b2f4529e0ac702fd7b91e216afd0adc959e <6e21754bbf75075f3fee1cebc79f3417364235ec \|\| >=377f9b2f4529e0ac702fd7b91e216afd0adc959e <3cf372cec7ab2cd8c6002bf775cc14d90ccb098b \|\| >=377f9b2f4529e0ac702fd7b91e216afd0adc959e <1f6a14c142fee4778c32709d1d54595c2e2b7991 \|\| >=377f9b2f4529e0ac702fd7b91e216afd0adc959e <0944462247dcb7de7622cdaaadf5f05c52707dab	6e21754bbf75075f3fee1cebc79f3417364235ec, 3cf372cec7ab2cd8c6002bf775cc14d90ccb098b, 1f6a14c142fee4778c32709d1d54595c2e2b7991, 0944462247dcb7de7622cdaaadf5f05c52707dab
Linux/Linuxgeneric	2.6.25	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 6e21754bbf75075f3fee1cebc79f3417364235ec 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: svcrdma: Reject connection when transport allocation fails handle_connect_req() returns without action when svc_rdma_create_xprt() fails to allocate the new transport. The CM core returns 0 for CONNECT_REQUEST events, so it does not destroy the new rdma_cm_id. Each allocation failure under memory pressure leaks one rdma_cm_id, and a remote peer driving connection attempts can amplify this. Reject the connection by returning a non-zero status from the CM event handler, which tells the CM core to destroy the orphaned cm_id.

Quoted source text, attributed separately from HOL analysis.