The vulnerability of the blk_mq_{add,del}_queue_tag_set() function in the Linux operating system allows a hacker to trigger a service failure.

The vulnerability of the blkmqadd,delqueuetagset function in the Linux operating system is related to errors during thread locking. Exploiting this vulnerability can allow an attacker to cause a service failure...

kernel: blk-mq: setup queue ->tag_set before initializing hctx

In the Linux kernel, the following vulnerability has been resolved: blk-mq: setup queue -tagset before initializing hctx Commit 7b815817aa58 "blk-mq: add helper for checking if one CPU is mapped to specified hctx" needs to check queue mapping via tag set in hctx's cpuhp handler. However, q-tagset...