SB2026082877 - Missing Authorization in Linux kernel amd amdkfd driver

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Main Vulnerability Database SB2026082877

SB2026082877 - Missing Authorization in Linux kernel amd amdkfd driver

Published: August 28, 2026

Security Bulletin ID SB2026082877
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Missing Authorization (CVE-ID: CVE-2026-80703)

CWE-ID: CWE-862 - Missing Authorization

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to interfere with another process's active GPU debug session.

The vulnerability exists due to improper access control in KFD_IOC_DBG_TRAP_DISABLE in the amdkfd kfd chardev ioctl handler when processing a debug trap disable request for another process. A local user can invoke the ioctl through /dev/kfd to interfere with another process's active GPU debug session.

The issue affects cross-process debug operations and occurs when the caller lacks ownership or an active ptrace authorization for the target process.


Remediation

Install update from vendor's website.

References