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redhatcveRedhat.comRH:CVE-2023-52774
HistoryMay 23, 2024 - 11:09 a.m.

CVE-2023-52774

2024-05-2311:09:41
redhat.com
access.redhat.com
1
linux kernel
s390/dasd
device queue
concurrent access
dasd_profile_start
kernel panic
device lock
pointer accesses
profile data.

6.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

13.0%

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.

6.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

13.0%