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CVE-2026-53293 Linux CVE debrief

CVE-2026-53293 is a vulnerability in the Linux kernel related to the AMDGPU_INFO_READ_MMR_REG functionality. Multiple issues were identified in the code, including incorrect ordering of the reset semaphore and mm_lock, memory allocation while holding the reset semaphore, and improper use of down_read_trylock(). These issues could lead to potential deadlocks and other problems. The vulnerability was resolved through a series of commits, including 361b6e6b303d4b691f6c5974d3eaab67ca6dd90e. This CVE was published on June 26, 2026, and last modified on June 30, 2026.

Vendor
Linux
Product
Unknown
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-26
Original CVE updated
2026-06-30
Advisory published
2026-06-26
Advisory updated
2026-06-30

Who should care

System administrators and security teams responsible for Linux kernel-based systems, particularly those utilizing AMD GPUs, should be aware of this vulnerability. They should assess their exposure and take necessary defensive actions to mitigate potential risks. Linux distributions and vendors may also need to evaluate and apply relevant patches.

Technical summary

The vulnerability (CVE-2026-53293) involves multiple issues in the AMDGPU_INFO_READ_MMR_REG code within the Linux kernel. The problems include incorrect locking order, memory allocation while holding a semaphore, and improper synchronization. These issues could lead to deadlocks and other concurrency-related problems. The fix involves reordering operations, properly handling memory allocation, and ensuring correct synchronization.

Defensive priority

Apply patches or updates provided by Linux distributions or vendors to address the AMDGPU_INFO_READ_MMR_REG vulnerability. Review system configurations and ensure proper locking and synchronization mechanisms are in place.

Recommended defensive actions

  • Apply patches or updates provided by Linux distributions or vendors.
  • Review system configurations for proper locking and synchronization.
  • Monitor Linux kernel updates and security advisories.
  • Assess exposure and prioritize patching based on system criticality.
  • Consider compensating controls for unpatched systems.

Evidence notes

The CVE record and NVD detail provide official information about the vulnerability. Multiple source references from kernel.org are available, detailing the specific commits and changes made to address the issues. However, due to limited information, further analysis on potential impact and affected scope is needed.

Official resources

This article is AI-assisted and based on the supplied source corpus.