CVE-2026-53293 drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG

What is CVE-2026-53293?

CVE-2026-53293 is a medium-severity vulnerability in Linux kernel, published on 26 Jun 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/amdgpu: fix AMDGPU_INFO_READ_MMR_REG

There were multiple issues in that code.

First of all the order between the reset semaphore and the mm_lock was wrong (e.g. copy_to_user) was called while holding the lock.

Then we allocated memory while holding the reset semaphore which is also a pretty big bug and can deadlock.

Then we used down_read_trylock() instead of waiting for the reset to finish.

(cherry picked from commit 361b6e6b303d4b691f6c5974d3eaab67ca6dd90e)

Weakness: CWE-667

Which versions are affected by CVE-2026-53293?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-53293?

Apply the vendor's patch.

Is CVE-2026-53293 being exploited?

There is no known exploitation of CVE-2026-53293 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-53293, DEBIAN-CVE-2026-53293, GHSA-qxgc-w63m-xvqr, ROOT-OS-UBUNTU-2404-CVE-2026-53293, UBUNTU-CVE-2026-53293.