Always-Incorrect Control Flow Implementation in Linux kernel - CVE-2026-45953
Published: May 28, 2026
Vulnerability identifier: #VU132542
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2026-45953
CWE-ID: CWE-670
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper state handling in the md/raid5 stripe handling logic when processing write I/O on a degraded array with llbitmap. A local user can trigger write operations to cause a denial of service.
The issue can cause the stripe handling code to enter a dead loop and hang I/O.
How to mitigate CVE-2026-45953
Install security update from vendor's repository.