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 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.

The following products are affected by CVE-2022-49377 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2022-49377.

URL	Resource
https://git.kernel.org/stable/c/460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff
https://git.kernel.org/stable/c/5d05426e2d5fd7df8afc866b78c36b37b00188b7
https://git.kernel.org/stable/c/70fdd922c7bf8949f8df109cf2635dff64c90392
https://git.kernel.org/stable/c/b140bac470b4f707cda59c7266214246238661df
https://lore.kernel.org/linux-cve-announce/2025022647-CVE-2022-49377-4fdf@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49377
https://www.cve.org/CVERecord?id=CVE-2022-49377