CVE-2022-49720

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> block: Fix handling of offline queues in blk_mq_alloc_request_hctx()<br /> <br /> This patch prevents that test nvme/004 triggers the following:<br /> <br /> UBSAN: array-index-out-of-bounds in block/blk-mq.h:135:9<br /> index 512 is out of range for type &amp;#39;long unsigned int [512]&amp;#39;<br /> Call Trace:<br /> show_stack+0x52/0x58<br /> dump_stack_lvl+0x49/0x5e<br /> dump_stack+0x10/0x12<br /> ubsan_epilogue+0x9/0x3b<br /> __ubsan_handle_out_of_bounds.cold+0x44/0x49<br /> blk_mq_alloc_request_hctx+0x304/0x310<br /> __nvme_submit_sync_cmd+0x70/0x200 [nvme_core]<br /> nvmf_connect_io_queue+0x23e/0x2a0 [nvme_fabrics]<br /> nvme_loop_connect_io_queues+0x8d/0xb0 [nvme_loop]<br /> nvme_loop_create_ctrl+0x58e/0x7d0 [nvme_loop]<br /> nvmf_create_ctrl+0x1d7/0x4d0 [nvme_fabrics]<br /> nvmf_dev_write+0xae/0x111 [nvme_fabrics]<br /> vfs_write+0x144/0x560<br /> ksys_write+0xb7/0x140<br /> __x64_sys_write+0x42/0x50<br /> do_syscall_64+0x35/0x80<br /> entry_SYSCALL_64_after_hwframe+0x44/0xae