{"id":"CVE-2022-49720","summary":"block: Fix handling of offline queues in blk_mq_alloc_request_hctx()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock: Fix handling of offline queues in blk_mq_alloc_request_hctx()\n\nThis patch prevents that test nvme/004 triggers the following:\n\nUBSAN: array-index-out-of-bounds in block/blk-mq.h:135:9\nindex 512 is out of range for type 'long unsigned int [512]'\nCall Trace:\n show_stack+0x52/0x58\n dump_stack_lvl+0x49/0x5e\n dump_stack+0x10/0x12\n ubsan_epilogue+0x9/0x3b\n __ubsan_handle_out_of_bounds.cold+0x44/0x49\n blk_mq_alloc_request_hctx+0x304/0x310\n __nvme_submit_sync_cmd+0x70/0x200 [nvme_core]\n nvmf_connect_io_queue+0x23e/0x2a0 [nvme_fabrics]\n nvme_loop_connect_io_queues+0x8d/0xb0 [nvme_loop]\n nvme_loop_create_ctrl+0x58e/0x7d0 [nvme_loop]\n nvmf_create_ctrl+0x1d7/0x4d0 [nvme_fabrics]\n nvmf_dev_write+0xae/0x111 [nvme_fabrics]\n vfs_write+0x144/0x560\n ksys_write+0xb7/0x140\n __x64_sys_write+0x42/0x50\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae","modified":"2026-04-02T08:27:51.946253Z","published":"2025-02-26T02:24:34.194Z","related":["SUSE-SU-2025:1027-1","SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1194-1","SUSE-SU-2025:1241-1","SUSE-SU-2025:1263-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49720.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/14dc7a18abbe4176f5626c13c333670da8e06aa1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7fa28a7c3d74933a4fc22d341b60927952f31c19"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b202a0bd2580ee5b0453772c46d464152fafff73"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b5e65ef044d627effdc2599040b6d204e003f955"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49720.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49720"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"20e4d813931961fe26d26a1e98b3aba6ec00b130"},{"fixed":"7fa28a7c3d74933a4fc22d341b60927952f31c19"},{"fixed":"b5e65ef044d627effdc2599040b6d204e003f955"},{"fixed":"b202a0bd2580ee5b0453772c46d464152fafff73"},{"fixed":"14dc7a18abbe4176f5626c13c333670da8e06aa1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49720.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}