CVE-2022-48697

In the Linux kernel, the following vulnerability has been resolved:

nvmet: fix a use-after-free

Fix the following use-after-free complaint triggered by blktests nvme/004:

BUG: KASAN: user-memory-access in blk_mq_complete_request_remote+0xac/0x350 Read of size 4 at addr 0000607bd1835943 by task kworker/13:1/460 Workqueue: nvmet-wq nvme_loop_execute_work [nvme_loop] Call Trace: show_stack+0x52/0x58 dump_stack_lvl+0x49/0x5e print_report.cold+0x36/0x1e2 kasan_report+0xb9/0xf0 __asan_load4+0x6b/0x80 blk_mq_complete_request_remote+0xac/0x350 nvme_loop_queue_response+0x1df/0x275 [nvme_loop] __nvmet_req_complete+0x132/0x4f0 [nvmet] nvmet_req_complete+0x15/0x40 [nvmet] nvmet_execute_io_connect+0x18a/0x1f0 [nvmet] nvme_loop_execute_work+0x20/0x30 [nvme_loop] process_one_work+0x56e/0xa70 worker_thread+0x2d1/0x640 kthread+0x183/0x1c0 ret_from_fork+0x1f/0x30

Affected Software

References

• https://git.kernel.org/stable/c/17f121ca3ec6be0fb32d77c7f65362934a38cc8e
• https://git.kernel.org/stable/c/4484ce97a78171668c402e0c45db7f760aea8060
• https://git.kernel.org/stable/c/6a02a61e81c231cc5c680c5dbf8665275147ac52
• https://git.kernel.org/stable/c/8d66989b5f7bb28bba2f8e1e2ffc8bfef4a10717
• https://git.kernel.org/stable/c/be01f1c988757b95f11f090a9f491365670a522b
• https://git.kernel.org/stable/c/ebf46da50beb78066674354ad650606a467e33fa