In the Linux kernel, the following vulnerability has been resolved:

s390/dasd: protect device queue against concurrent access

In dasd_profile_start() the amount of requests on the device queue are
counted. The access to the device queue is unprotected against
concurrent access. With a lot of parallel I/O, especially with alias
devices enabled, the device queue can change while dasd_profile_start()
is accessing the queue. In the worst case this leads to a kernel panic
due to incorrect pointer accesses.

Fix this by taking the device lock before accessing the queue and
counting the requests. Additionally the check for a valid profile data
pointer can be done earlier to avoid unnecessary locking in a hot path.
History

Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T07:42:57.731Z

Reserved: 2024-05-21T15:19:24.239Z

Link: CVE-2023-52774

cve-icon Vulnrichment

Updated: 2024-08-02T23:11:35.549Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-05-21T16:15:16.537

Modified: 2024-11-21T08:40:33.640

Link: CVE-2023-52774

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-21T00:00:00Z

Links: CVE-2023-52774 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-07-13T21:07:07Z