CVE-2025-10823 axboe fio options.c str_buffer_pattern_cb null pointer dereference
A local attacker can cause a denial of service in the fio benchmarking tool via a null pointer dereference in the str_buffer_pattern_cb function.
- 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-2025-10823?
CVE-2025-10823 is a medium-severity vulnerability in axboe fio, published on 22 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was found in axboe fio up to 3.41. This affects the function str_buffer_pattern_cb of the file options.c. Performing manipulation results in null pointer dereference. The attack must be initiated from a local position. The exploit has been made public and could be used.
Which versions are affected by CVE-2025-10823?
How do I fix CVE-2025-10823?
Upgrade to a fixed version.
Is CVE-2025-10823 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-10823 exists.
Sources
Also known as AZL-67625, AZL-67664, DEBIAN-CVE-2025-10823, GHSA-fg45-43v5-3rqm, UBUNTU-CVE-2025-10823.