CVE-2026-68444 firmware: arm_ffa: Fix NULL dereference in ffa_partition_info_get()
A local attacker can trigger a kernel panic in the ARM FFA driver by passing a NULL UUID, causing a denial of service.
- 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-2026-68444?
CVE-2026-68444 is a vulnerability in Linux, published on 12 Aug 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:
firmware: arm_ffa: Fix NULL dereference in ffa_partition_info_get()
ffa_partition_info_get() passes uuid_str directly to uuid_parse() without a NULL check. When a caller passes NULL, uuid_parse() -> __uuid_parse() -> uuid_is_valid() dereferences the pointer, causing a kernel panic:
| Unable to handle kernel NULL pointer dereference at virtual address | 0000000000000040 | pc : uuid_parse+0x40/0xac | lr : ffa_partition_info_get+0x1c/0x94 [arm_ffa]
Add a NULL guard before uuid_parse() so a NULL argument returns -ENODEV instead of crashing. Callers are expected to always supply a valid partition UUID, so NULL is not a supported input.
Which versions are affected by CVE-2026-68444?
How do I fix CVE-2026-68444?
Apply the vendor's patch.
Is CVE-2026-68444 being exploited?
There is no known exploitation of CVE-2026-68444 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68444, DEBIAN-CVE-2026-68444, GHSA-gmqq-2x2r-pq35, UBUNTU-CVE-2026-68444.