tracing: Don't dereference trace_event_file in deferred trigger free (CVE-2026-97932) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97932

tracing: Don't dereference trace_event_file in deferred trigger free

Answer in brief

CVE-2026-97932 records a Unknown severity vulnerability in tracing: Don't dereference trace_event_file in deferred trigger free. 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	>=e091351b38818ef620d27f44f4bfd625f13afbff <67fb91a7f7bb1d958cf9cc249c912bca9b2fc821 \|\| >=e091351b38818ef620d27f44f4bfd625f13afbff <bcfe2816e6ec46c3f4c58aa4264476665ddb3f69 \|\| 159fdc3e01dca5fdbc412fcd8b239895733a270d \|\| >=7.1.6 <7.2	67fb91a7f7bb1d958cf9cc249c912bca9b2fc821, bcfe2816e6ec46c3f4c58aa4264476665ddb3f69, 7.2
Linux/Linuxgeneric	7.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 67fb91a7f7bb1d958cf9cc249c912bca9b2fc821 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: tracing: Don't dereference trace_event_file in deferred trigger free The enable_event trigger defers trace_event_put_ref() to the trigger free kthread, but the trace_event_file can already be freed when the instance is removed. Keep the trace_event_call directly in enable_trigger_data so the deferred free does not access the freed trace_event_file.

Quoted source text, attributed separately from HOL analysis.