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: 2024-05-21T15:30:55.593Z

Updated: 2024-09-11T17:32:55.198Z

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

Link: CVE-2023-52774

cve-icon Vulnrichment

Updated: 2024-09-11T12:42:13.496Z

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2024-05-21T16:53:56.550

Link: CVE-2023-52774

cve-icon Redhat

Severity : Low

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

Links: CVE-2023-52774 - Bugzilla