All vulnerabilities
CVE-2026-97932

Linux: tracing: Don't dereference trace_event_file in deferred trigger free

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.19%Chance of exploitation activity in the next 30 days, higher than 8% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in67fb91a7f7bb1d958cf9cc249c912bca9b2fc821Also 7.2CVE List
Published25 Sep 2026Updated 19 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 8

  • Linuxaffected: e091351b38818ef620d27f44f4bfd625f13afbff before 67fb91a7f7bb1d958cf9cc249c912bca9b2fc821CVE List
  • Linuxaffected: e091351b38818ef620d27f44f4bfd625f13afbff before bcfe2816e6ec46c3f4c58aa4264476665ddb3f69CVE List
  • Linuxaffected: 159fdc3e01dca5fdbc412fcd8b239895733a270dCVE List
  • Linuxaffected: 7.1.6 before 7.2CVE List
  • Linuxaffected: 7.2CVE List
  • Linuxunaffected: all versions before 7.2CVE List
  • Linuxunaffected: 7.2.7 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 2