CVE-2025-38302
kernel: Linux kernel: Denial of Service due to improper bio submission in the block layer
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 10, 2025
Updated · June 30, 2026
Description
A flaw was found in the Linux kernel's block layer. An improper submission of bio (block input/output) operations in the blk_zone_wplug_bio_work function can lead to a deadlock. This occurs because the submit_bio_noacct_nocheck function duplicates work and interferes with queue freezing mechanisms. A local attacker could exploit this to cause a Denial of Service (DoS) by triggering a system freeze.
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-833 · Deadlock