CVE-2026-45908 accel/amdxdna: Fix memory leak in amdxdna_ubuf_map
A memory leak in the AMD XDNA accelerator driver allows attackers to exhaust kernel memory, potentially 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-2026-45908?
CVE-2026-45908 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 May 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 memory leak in amdxdna_ubuf_map
The amdxdna_ubuf_map() function allocates memory for sg and internal sg table structures, but it fails to free them if subsequent operations (sg_alloc_table_from_pages or dma_map_sgtable) fail.
Weakness: CWE-401
Which versions are affected by CVE-2026-45908?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-45908?
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-2026-45908 being exploited?
There is no known exploitation of CVE-2026-45908 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-45908, DEBIAN-CVE-2026-45908, GHSA-6432-66v6-m255, UBUNTU-CVE-2026-45908.