SB2026062596 - Always-Incorrect Control Flow Implementation in Linux kernel md driver

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Main Vulnerability Database SB2026062596

SB2026062596 - Always-Incorrect Control Flow Implementation in Linux kernel md driver

Published: June 25, 2026

Security Bulletin ID SB2026062596
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) Always-Incorrect Control Flow Implementation (CVE-ID: CVE-2026-53063)

CWE-ID: CWE-670 - Always-Incorrect Control Flow Implementation

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 improper control flow management in invalidate_remove() in the dm-cache target when handling write hit bios after cache invalidation in passthrough mode. A local user can trigger write operations in this state to cause a denial of service.

The issue causes write operations to hang because a remapped overwrite bio is dropped without being submitted.


Remediation

Install update from vendor's website.

References