CVE-2019-25044
kernel: use-after-free in the block subsystem related to blk_mq_free_rqs and blk_cleanup_queue
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 6, 2019
Updated · November 22, 2025
Description
A flaw was found in the Linux kernel. The block subsystem has a use-after-free that can lead to arbitrary code execution in the kernel context and privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
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 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free