CVE-2026-63881 drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger
An integer overflow in the AMD KFD debugger allows attackers to cause denial of service or potentially execute code via crafted queue IDs.
- 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-2026-63881?
CVE-2026-63881 is a high-severity vulnerability in Linux kernel, published on 19 Jul 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:
drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger
get_queue_ids() computes array_size = num_queues * sizeof(uint32_t), which could overflow on 32-bit size_t build. using array_size() instead, it saturates to SIZE_MAX on overflow.
(cherry picked from commit 2d57a0475f085c08b49312dfd8edcb461845f285)
Weakness: CWE-190
Which versions are affected by CVE-2026-63881?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-63881?
Apply the vendor's patch.
Is CVE-2026-63881 being exploited?
There is no known exploitation of CVE-2026-63881 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-92781, BELL-CVE-2026-63881, DEBIAN-CVE-2026-63881, GHSA-pg6j-5v22-gvqf, ROOT-OS-UBUNTU-2204-CVE-2026-63881, UBUNTU-CVE-2026-63881.