CVE-2026-74423 accel/amdxdna: Fix leak when pinning ubuf pages
A memory leak in the AMD XDNA accelerator driver allows local attackers to exhaust kernel memory, causing 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-2026-74423?
CVE-2026-74423 is a memory corruption vulnerability in Linux, published on 15 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:
accel/amdxdna: Fix leak when pinning ubuf pages
When pin_user_pages_fast() returns fewer pages than requested, the pages that were successfully pinned are not released, leading to a leak.
Fix this by unpinning any partially pinned pages before returning failure.
Which versions are affected by CVE-2026-74423?
How do I fix CVE-2026-74423?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-74423 being exploited?
There is no known exploitation of CVE-2026-74423 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-74423, DEBIAN-CVE-2026-74423, GHSA-284m-jpv7-rc59, UBUNTU-CVE-2026-74423.