Improper control of a resource through its lifetime in Linux kernel - CVE-2026-53124
Published: June 25, 2026
Vulnerability identifier: #VU135163
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-2026-53124
CWE-ID: CWE-664
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 management in the ublk driver when recovering devices and fetching I/O commands. A local user can cause a ublk server to die after only a subset of I/Os in a queue have been fetched to cause a denial of service.
The issue occurs because per-I/O canceled flags can remain set for fetched I/Os if recovery stops before all I/Os in the queue are fetched, preventing outstanding commands from being completed during cancellation.
How to mitigate CVE-2026-53124
Install security update from vendor's repository.