SB2026052977 - Reachable assertion in Linux kernel amd amdgpu driver

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Main Vulnerability Database SB2026052977

SB2026052977 - Reachable assertion in Linux kernel amd amdgpu driver

Published: May 29, 2026

Security Bulletin ID SB2026052977
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Reachable assertion (CVE-ID: CVE-2026-46220)

CWE-ID: CWE-617 - Reachable Assertion

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to reachable assertion use in sdma_v4_0_ring_emit_fence() when processing crafted DRM_IOCTL_AMDGPU_CS submissions. A local user can submit a specially crafted command submission request to cause a denial of service.

The issue can trigger a fatal kernel panic in a scheduler worker thread when a misaligned fence writeback address reaches the fence emission path.


Remediation

Install update from vendor's website.

References