CVE-2026-89613 ntfs: reject invalid empty mapping pairs
A flaw in the Linux kernel NTFS driver allows attackers to cause a denial of service by providing malformed mapping pairs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-89613?
CVE-2026-89613 is a critical denial of service vulnerability in Linux, published on 11 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ntfs: reject invalid empty mapping pairs
Reject an attribute with empty mapping pairs if it has inconsistent highest VCN and size.
Which versions are affected by CVE-2026-89613?
How do I fix CVE-2026-89613?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-89613 being exploited?
There is no known exploitation of CVE-2026-89613 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-89613, GHSA-674g-rrmx-c6rx, UBUNTU-CVE-2026-89613.