CVE-2026-93262 md/raid5-ppl: fix use-after-free in ppl_do_flush()
A use-after-free vulnerability in the Linux kernel's RAID5 PPL module allows attackers to potentially execute code or cause a system crash.
- 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-2026-93262?
CVE-2026-93262 is a high-severity use after free vulnerability in Linux, published on 24 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:
md/raid5-ppl: fix use-after-free in ppl_do_flush()
The loop in ppl_do_flush() continues iterating after calling ppl_io_unit_finished(), touching io->pending_flushes and leading to a use-after-free.
Add a break statement to stop the loop once io is freed.
Which versions are affected by CVE-2026-93262?
How do I fix CVE-2026-93262?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-93262 being exploited?
There is no known exploitation of CVE-2026-93262 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-93262, DEBIAN-CVE-2026-93262, GHSA-238f-5wx4-vrgf, UBUNTU-CVE-2026-93262.