SB20260720180 - Use-after-free in Linux kernel accel qaic driver

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Main Vulnerability Database SB20260720180

SB20260720180 - Use-after-free in Linux kernel accel qaic driver

Published: July 20, 2026

Security Bulletin ID SB20260720180
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) Use-after-free (CVE-ID: CVE-2026-64051)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [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]


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

The vulnerability exists due to a use-after-free in qaic_gem_object_mmap when mapping a buffer object into memory with scatter-gather segments that extend beyond the virtual memory area. A local user can trigger the mapping of an oversized buffer object to cause a denial of service.

The issue occurs because memory beyond the requested virtual memory area can remain mapped after munmap() unmaps only the virtual memory area region.


Remediation

Install update from vendor's website.

References