CVE-2026-89832 f2fs: fix to clear dirty flag on folio in error path
A flaw in the Linux kernel f2fs filesystem fails to clear dirty flags on corrupted node folios, potentially leading to inconsistent data persistence.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-89832?
CVE-2026-89832 is a high-severity vulnerability in Linux, published on 16 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-89832?
How do I fix CVE-2026-89832?
Apply the vendor's patch.
Is CVE-2026-89832 being exploited?
There is no known exploitation of CVE-2026-89832 in the wild and no public exploit code.
Sources
Also known as AZL-101258, BELL-CVE-2026-89832, DEBIAN-CVE-2026-89832, GHSA-wf2c-cvqr-xhr7, UBUNTU-CVE-2026-89832.