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.
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Tue, 23 Sep 2025 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-476 | |
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:* |
|
| Metrics |
cvssV3_1
|
cvssV3_1
|
Wed, 11 Sep 2024 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-05-11T19:32:52.890Z
Reserved: 2024-05-21T15:19:24.239Z
Link: CVE-2023-52774
Updated: 2024-08-02T23:11:35.549Z
Status : Analyzed
Published: 2024-05-21T16:15:16.537
Modified: 2025-09-23T20:00:36.837
Link: CVE-2023-52774
OpenCVE Enrichment
Updated: 2025-07-13T21:07:07Z