kernel: blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx

A use-after-free vulnerability was found in the blkmqgetsqhctx function in the Linux kernel's block multiqueue blk-mq subsystem. This issue occurs when the function accesses the tagset pointer to determine the current default hardware context through mapping. If this access occurs after the tagse...

kernel: blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx

A use-after-free vulnerability was found in the blkmqgetsqhctx function in the Linux kernel's block multiqueue blk-mq subsystem. This issue occurs when the function accesses the tagset pointer to determine the current default hardware context through mapping. If this access occurs after the tagse...