CVE-2026-53124
kernel: ublk: reset per-IO canceled flag on each fetch
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 24, 2026
Updated · July 24, 2026
Description
A flaw was found in the ublk subsystem of the Linux kernel. When a ublk server fails to complete all I/O (input/output) operations, a per-I/O cancellation flag may remain set. This prevents the successful cancellation of outstanding I/O commands, potentially leading to resource exhaustion or a denial of service (DoS) condition where system resources are tied up indefinitely.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-821 · Incorrect Synchronization