Tracker / CVE-2023-52774
CVE-2023-52774
Medium 5.5
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 and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.1 → 4.14.332 |
| linux | linux_kernel · 4.15 → 4.19.301 |
| linux | linux_kernel · 4.20 → 5.4.263 |
| linux | linux_kernel · 5.11 → 5.15.141 |
| linux | linux_kernel · 5.16 → 6.1.65 |
| linux | linux_kernel · 5.5 → 5.10.203 |
| linux | linux_kernel · 6.2 → 6.6.4 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.