CVE-2023-52774: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: from 3.1, before 4.14.332 (fixed in 4.14.332); from 4.15, before 4.19.301 (fixed in 4.19.301); from 4.20, before 5.4.263 (fixed in 5.4.263); from 5.5, before 5.10.203 (fixed in 5.10.203); from 5.11, before 5.15.141 (fixed in 5.15.141); from 5.16, before 6.1.65 (fixed in 6.1.65); …

Published 2024-05-21. Last modified 2026-06-17.