Vulnerability Details CVE-2022-49694
In the Linux kernel, the following vulnerability has been resolved:
block: disable the elevator int del_gendisk
The elevator is only used for file system requests, which are stopped in
del_gendisk. Move disabling the elevator and freeing the scheduler tags
to the end of del_gendisk instead of doing that work in disk_release and
blk_cleanup_queue to avoid a use after free on q->tag_set from
disk_release as the tag_set might not be alive at that point.
Move the blk_qos_exit call as well, as it just depends on the elevator
exit and would be the only reason to keep the not exactly cheap queue
freeze in disk_release.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.7%
CVSS Severity
CVSS v3 Score 7.8
References
Products affected by CVE-2022-49694
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cpe:2.3:o:linux:linux_kernel:5.16
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cpe:2.3:o:linux:linux_kernel:5.16.0
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cpe:2.3:o:linux:linux_kernel:5.16.1
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cpe:2.3:o:linux:linux_kernel:5.16.10
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cpe:2.3:o:linux:linux_kernel:5.16.11
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cpe:2.3:o:linux:linux_kernel:5.16.12
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cpe:2.3:o:linux:linux_kernel:5.16.13
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cpe:2.3:o:linux:linux_kernel:5.16.14
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cpe:2.3:o:linux:linux_kernel:5.16.15
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cpe:2.3:o:linux:linux_kernel:5.16.16
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cpe:2.3:o:linux:linux_kernel:5.16.17
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cpe:2.3:o:linux:linux_kernel:5.16.18
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cpe:2.3:o:linux:linux_kernel:5.16.19
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cpe:2.3:o:linux:linux_kernel:5.16.2
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cpe:2.3:o:linux:linux_kernel:5.16.20
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cpe:2.3:o:linux:linux_kernel:5.16.3
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cpe:2.3:o:linux:linux_kernel:5.16.4
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cpe:2.3:o:linux:linux_kernel:5.16.5
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cpe:2.3:o:linux:linux_kernel:5.16.6
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cpe:2.3:o:linux:linux_kernel:5.16.62
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cpe:2.3:o:linux:linux_kernel:5.16.7
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cpe:2.3:o:linux:linux_kernel:5.16.8
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cpe:2.3:o:linux:linux_kernel:5.16.9
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cpe:2.3:o:linux:linux_kernel:5.17
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cpe:2.3:o:linux:linux_kernel:5.17.1
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cpe:2.3:o:linux:linux_kernel:5.17.10
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cpe:2.3:o:linux:linux_kernel:5.17.11
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cpe:2.3:o:linux:linux_kernel:5.17.12
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cpe:2.3:o:linux:linux_kernel:5.17.13
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cpe:2.3:o:linux:linux_kernel:5.17.14
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cpe:2.3:o:linux:linux_kernel:5.17.15
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cpe:2.3:o:linux:linux_kernel:5.17.2
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cpe:2.3:o:linux:linux_kernel:5.17.3
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cpe:2.3:o:linux:linux_kernel:5.17.4
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cpe:2.3:o:linux:linux_kernel:5.17.5
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cpe:2.3:o:linux:linux_kernel:5.17.6
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cpe:2.3:o:linux:linux_kernel:5.17.7
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cpe:2.3:o:linux:linux_kernel:5.17.8
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cpe:2.3:o:linux:linux_kernel:5.17.9
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cpe:2.3:o:linux:linux_kernel:5.18
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cpe:2.3:o:linux:linux_kernel:5.18.1
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cpe:2.3:o:linux:linux_kernel:5.18.2
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cpe:2.3:o:linux:linux_kernel:5.18.3
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cpe:2.3:o:linux:linux_kernel:5.18.4
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cpe:2.3:o:linux:linux_kernel:5.18.5
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cpe:2.3:o:linux:linux_kernel:5.18.6
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cpe:2.3:o:linux:linux_kernel:5.18.7
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cpe:2.3:o:linux:linux_kernel:5.19