CVE-2026-97433 nvme: validate FDP configuration descriptor sizes
An attacker can cause a denial of service in the Linux kernel NVMe driver by triggering unbounded iteration or out-of-bounds reads via malformed FDP configuration descriptors.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-97433?
CVE-2026-97433 is a high-severity denial of service vulnerability in Linux, published on 24 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:
nvme: validate FDP configuration descriptor sizes
Validate descriptor sizes while walking the FDP configurations log so dsze == 0 or a descriptor past the log end cannot cause unbounded iteration or reads past the buffer.
Which versions are affected by CVE-2026-97433?
How do I fix CVE-2026-97433?
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-2026-97433 being exploited?
There is no known exploitation of CVE-2026-97433 in the wild and no public exploit code.
Sources
Also known as AZL-103772, BELL-CVE-2026-97433, DEBIAN-CVE-2026-97433, GHSA-5h8w-586w-g6hj, UBUNTU-CVE-2026-97433.