cbcvebase.
CVE-2022-49377
published 2025-02-26

CVE-2022-49377: In the Linux kernel, the following vulnerability has been resolved: blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx blk_mq_run_hw_queues() could be run when…

PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.29%
21.0th percentile
In the Linux kernel, the following vulnerability has been resolved: blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx blk_mq_run_hw_queues() could be run when there isn't queued request and after queue is cleaned up, at that time tagset is freed, because tagset lifetime is covered by driver, and often freed after blk_cleanup_queue() returns. So don't touch ->tagset for figuring out current default hctx by the mapping built in request queue, so use-after-free on tagset can be avoided. Meantime this way should be fast than retrieving mapping from tagset.

Affected

12 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.18.5-1 (bookworm)linux 5.18.5-1 (bookworm)
linuxlinux——
linuxlinux>= b6e68ee82585f2ee890b0a897a6aacbf49a467bb < 460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff
linuxlinux>= b6e68ee82585f2ee890b0a897a6aacbf49a467bb < b140bac470b4f707cda59c7266214246238661dfb140bac470b4f707cda59c7266214246238661df
linuxlinux>= b6e68ee82585f2ee890b0a897a6aacbf49a467bb < 70fdd922c7bf8949f8df109cf2635dff64c9039270fdd922c7bf8949f8df109cf2635dff64c90392
linuxlinux>= b6e68ee82585f2ee890b0a897a6aacbf49a467bb < 5d05426e2d5fd7df8afc866b78c36b37b00188b75d05426e2d5fd7df8afc866b78c36b37b00188b7
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 5.12 < 5.15.475.15.47
linuxlinux_kernel>= 5.16 < 5.17.155.17.15
linuxlinux_kernel>= 5.18 < 5.18.45.18.4

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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