SB20260720102 - Improper Check for Unusual or Exceptional Conditions in Linux kernel selftests vm

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Main Vulnerability Database SB20260720102

SB20260720102 - Improper Check for Unusual or Exceptional Conditions in Linux kernel selftests vm

Published: July 20, 2026

Security Bulletin ID SB20260720102
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-64131)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

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


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

The vulnerability exists due to improper check for unusual or exceptional conditions in mm/memory.c unmap path when unmapping device-private or exclusive pages from private file-backed mappings. A local user can trigger memory migration and unmapping operations to cause a denial of service.

The issue can result in a kernel warning during process teardown.


Remediation

Install update from vendor's website.

References