Vulnerability Details CVE-2022-48846
In the Linux kernel, the following vulnerability has been resolved:
block: release rq qos structures for queue without disk
blkcg_init_queue() may add rq qos structures to request queue, previously
blk_cleanup_queue() calls rq_qos_exit() to release them, but commit
8e141f9eb803 ("block: drain file system I/O on del_gendisk")
moves rq_qos_exit() into del_gendisk(), so memory leak is caused
because queues may not have disk, such as un-present scsi luns, nvme
admin queue, ...
Fixes the issue by adding rq_qos_exit() to blk_cleanup_queue() back.
BTW, v5.18 won't need this patch any more since we move
blkcg_init_queue()/blkcg_exit_queue() into disk allocation/release
handler, and patches have been in for-5.18/block.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 3.3%
CVSS Severity
CVSS v3 Score 5.5
References
- https://git.kernel.org/stable/c/60c2c8e2ef3a3ec79de8cbc80a06ca0c21df8c29
- https://git.kernel.org/stable/c/d4ad8736ac982111bb0be8306bf19c8207f6600e
- https://git.kernel.org/stable/c/daaca3522a8e67c46e39ef09c1d542e866f85f3b
- https://git.kernel.org/stable/c/60c2c8e2ef3a3ec79de8cbc80a06ca0c21df8c29
- https://git.kernel.org/stable/c/d4ad8736ac982111bb0be8306bf19c8207f6600e
- https://git.kernel.org/stable/c/daaca3522a8e67c46e39ef09c1d542e866f85f3b
Products affected by CVE-2022-48846
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cpe:2.3:o:linux:linux_kernel:5.15
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cpe:2.3:o:linux:linux_kernel:5.15.0
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cpe:2.3:o:linux:linux_kernel:5.15.0-58
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cpe:2.3:o:linux:linux_kernel:5.15.1
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cpe:2.3:o:linux:linux_kernel:5.15.10
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cpe:2.3:o:linux:linux_kernel:5.15.11
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cpe:2.3:o:linux:linux_kernel:5.15.12
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cpe:2.3:o:linux:linux_kernel:5.15.13
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cpe:2.3:o:linux:linux_kernel:5.15.14
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cpe:2.3:o:linux:linux_kernel:5.15.15
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cpe:2.3:o:linux:linux_kernel:5.15.16
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cpe:2.3:o:linux:linux_kernel:5.15.17
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cpe:2.3:o:linux:linux_kernel:5.15.18
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cpe:2.3:o:linux:linux_kernel:5.15.19
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cpe:2.3:o:linux:linux_kernel:5.15.2
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cpe:2.3:o:linux:linux_kernel:5.15.20
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cpe:2.3:o:linux:linux_kernel:5.15.21
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cpe:2.3:o:linux:linux_kernel:5.15.22
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cpe:2.3:o:linux:linux_kernel:5.15.23
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cpe:2.3:o:linux:linux_kernel:5.15.24
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cpe:2.3:o:linux:linux_kernel:5.15.25
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cpe:2.3:o:linux:linux_kernel:5.15.26
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cpe:2.3:o:linux:linux_kernel:5.15.27
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cpe:2.3:o:linux:linux_kernel:5.15.28
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cpe:2.3:o:linux:linux_kernel:5.15.29
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cpe:2.3:o:linux:linux_kernel:5.15.3
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cpe:2.3:o:linux:linux_kernel:5.15.30
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cpe:2.3:o:linux:linux_kernel:5.15.4
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cpe:2.3:o:linux:linux_kernel:5.15.5
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cpe:2.3:o:linux:linux_kernel:5.15.6
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cpe:2.3:o:linux:linux_kernel:5.15.7
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cpe:2.3:o:linux:linux_kernel:5.15.8
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cpe:2.3:o:linux:linux_kernel:5.15.9
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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:5.16.2
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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:5.16.7
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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