CVE-2023-53292
MEDIUM severity · CVSS 5.5 · CWE-476
5.5CVSS MEDIUM
Summary
In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none After grabbing q->sysfs_lock, q->elevator may become NULL because of elevator switch. Fix the NULL dereference on q->elevator by checking it with lock.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/245165658e1c9f95c0fecfe02b9b1ebd30a1198a ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/245165658e1c9f95c0fecfe02b9b1ebd30a1198aPatch
- https://git.kernel.org/stable/c/3e977386521b71471e66ec2ba82efdfcc456adf2Patch
- https://git.kernel.org/stable/c/988ddb77218d3975dd13dee7bb0e1fae098a9fdb
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html