{"id":"CVE-2022-49720","state":"PUBLISHED","title":"block: Fix handling of offline queues in blk_mq_alloc_request_hctx()","description":"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","publishedAt":"2025-02-26T02:24:34.194Z","updatedAt":"2026-05-11T19:05:32.826Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"20e4d813931961fe26d26a1e98b3aba6ec00b130","status":"affected","lessThan":"7fa28a7c3d74933a4fc22d341b60927952f31c19","versionType":"git"},{"version":"20e4d813931961fe26d26a1e98b3aba6ec00b130","status":"affected","lessThan":"b5e65ef044d627effdc2599040b6d204e003f955","versionType":"git"},{"version":"20e4d813931961fe26d26a1e98b3aba6ec00b130","status":"affected","lessThan":"b202a0bd2580ee5b0453772c46d464152fafff73","versionType":"git"},{"version":"20e4d813931961fe26d26a1e98b3aba6ec00b130","status":"affected","lessThan":"14dc7a18abbe4176f5626c13c333670da8e06aa1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-mq.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.16","versionType":"semver"},{"version":"5.10.124","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.49","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.6","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-mq.c"]}],"references":["https://git.kernel.org/stable/c/7fa28a7c3d74933a4fc22d341b60927952f31c19","https://git.kernel.org/stable/c/b5e65ef044d627effdc2599040b6d204e003f955","https://git.kernel.org/stable/c/b202a0bd2580ee5b0453772c46d464152fafff73","https://git.kernel.org/stable/c/14dc7a18abbe4176f5626c13c333670da8e06aa1"],"weaknesses":["CWE-129"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49720.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49720","state":"PUBLISHED","datePublished":"2025-02-26T02:24:34.194Z","dateUpdated":"2026-05-11T19:05:32.826Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:21:30.445Z"},"containers":{"cna":{"title":"block: Fix handling of offline queues in blk_mq_alloc_request_hctx()","descriptions":[{"lang":"en","value":"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"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"20e4d813931961fe26d26a1e98b3aba6ec00b130","status":"affected","lessThan":"7fa28a7c3d74933a4fc22d341b60927952f31c19","versionType":"git"},{"version":"20e4d813931961fe26d26a1e98b3aba6ec00b130","status":"affected","lessThan":"b5e65ef044d627effdc2599040b6d204e003f955","versionType":"git"},{"version":"20e4d813931961fe26d26a1e98b3aba6ec00b130","status":"affected","lessThan":"b202a0bd2580ee5b0453772c46d464152fafff73","versionType":"git"},{"version":"20e4d813931961fe26d26a1e98b3aba6ec00b130","status":"affected","lessThan":"14dc7a18abbe4176f5626c13c333670da8e06aa1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-mq.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.16","versionType":"semver"},{"version":"5.10.124","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.49","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.6","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-mq.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7fa28a7c3d74933a4fc22d341b60927952f31c19"},{"url":"https://git.kernel.org/stable/c/b5e65ef044d627effdc2599040b6d204e003f955"},{"url":"https://git.kernel.org/stable/c/b202a0bd2580ee5b0453772c46d464152fafff73"},{"url":"https://git.kernel.org/stable/c/14dc7a18abbe4176f5626c13c333670da8e06aa1"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:05:32.826Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.10.124"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.15.49"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.18.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.8,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-49720","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2025-10-01T19:32:03.276274Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-129","lang":"en","type":"CWE","description":"CWE-129 Improper Validation of Array Index"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:36:44.080Z"}}]}}}