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PatchSiren cyber security CVE debrief

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
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-26
Original CVE updated
2026-07-08
Advisory published
2026-06-26
Advisory updated
2026-07-08

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53293 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53293

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-53293 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53293

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/0ef196a208385b7d7da79f411c161b04e97283e2

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/5c29d20470d4566d1b68df57097d642d01f8b427

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/61957c2e467b39b528a290016367d32a433fa846

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/8c4254c8f5836e77ae83e7fc037f02b69f7a0977

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/a31c3feb54b15a90232e497ad0e27e8a82052d8d

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.