PCI: Fix UAF when probe runs concurrent to dyn ID removal (CVE-2026-90421) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90421

PCI: Fix UAF when probe runs concurrent to dyn ID removal

Answer in brief

CVE-2026-90421 records a Unknown severity vulnerability in PCI: Fix UAF when probe runs concurrent to dyn ID removal. 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	>=0994375e9614f78657031e04e30019b9cdb62795 <42a5661ff7e4c7d3c5025d0f8e5079fb5479ea49 \|\| >=0994375e9614f78657031e04e30019b9cdb62795 <3ffc4c9690c33ee28cdb3d0182b12f9c623e3acc	42a5661ff7e4c7d3c5025d0f8e5079fb5479ea49, 3ffc4c9690c33ee28cdb3d0182b12f9c623e3acc
Linux/Linuxgeneric	2.6.30	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 42a5661ff7e4c7d3c5025d0f8e5079fb5479ea49 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: PCI: Fix UAF when probe runs concurrent to dyn ID removal Dynamic IDs are only guaranteed to be valid when dynids.lock is held, as remove_id_store() can free the node. Thus, make a copy in pci_match_device(). Also, clarify that the id parameter is only valid during probe.

Quoted source text, attributed separately from HOL analysis.