{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49297", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T01:49:39.302Z", "datePublished": "2025-02-26T02:01:26.628Z", "dateUpdated": "2026-05-11T18:56:58.046Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T18:56:58.046Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnbd: fix io hung while disconnecting device\n\nIn our tests, \"qemu-nbd\" triggers a io hung:\n\nINFO: task qemu-nbd:11445 blocked for more than 368 seconds.\n Not tainted 5.18.0-rc3-next-20220422-00003-g2176915513ca #884\n\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\ntask:qemu-nbd state:D stack: 0 pid:11445 ppid: 1 flags:0x00000000\nCall Trace:\n \n __schedule+0x480/0x1050\n ? _raw_spin_lock_irqsave+0x3e/0xb0\n schedule+0x9c/0x1b0\n blk_mq_freeze_queue_wait+0x9d/0xf0\n ? ipi_rseq+0x70/0x70\n blk_mq_freeze_queue+0x2b/0x40\n nbd_add_socket+0x6b/0x270 [nbd]\n nbd_ioctl+0x383/0x510 [nbd]\n blkdev_ioctl+0x18e/0x3e0\n __x64_sys_ioctl+0xac/0x120\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7fd8ff706577\nRSP: 002b:00007fd8fcdfebf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 0000000040000000 RCX: 00007fd8ff706577\nRDX: 000000000000000d RSI: 000000000000ab00 RDI: 000000000000000f\nRBP: 000000000000000f R08: 000000000000fbe8 R09: 000055fe497c62b0\nR10: 00000002aff20000 R11: 0000000000000246 R12: 000000000000006d\nR13: 0000000000000000 R14: 00007ffe82dc5e70 R15: 00007fd8fcdff9c0\n\n\"qemu-ndb -d\" will call ioctl 'NBD_DISCONNECT' first, however, following\nmessage was found:\n\nblock nbd0: Send disconnect failed -32\n\nWhich indicate that something is wrong with the server. Then,\n\"qemu-nbd -d\" will call ioctl 'NBD_CLEAR_SOCK', however ioctl can't clear\nrequests after commit 2516ab1543fd(\"nbd: only clear the queue on device\nteardown\"). And in the meantime, request can't complete through timeout\nbecause nbd_xmit_timeout() will always return 'BLK_EH_RESET_TIMER', which\nmeans such request will never be completed in this situation.\n\nNow that the flag 'NBD_CMD_INFLIGHT' can make sure requests won't\ncomplete multiple times, switch back to call nbd_clear_sock() in\nnbd_clear_sock_ioctl(), so that inflight requests can be cleared." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/block/nbd.c" ], "versions": [ { "version": "2516ab1543fdd1f9d08385d73cae51f668a9f3dc", "lessThan": "67e403136a0e1a55fef6a05f103a3979a39ad3fd", "status": "affected", "versionType": "git" }, { "version": "2516ab1543fdd1f9d08385d73cae51f668a9f3dc", "lessThan": "62d227f67a8c25d5e16f40e5290607f9306d2188", "status": "affected", "versionType": "git" }, { "version": "2516ab1543fdd1f9d08385d73cae51f668a9f3dc", "lessThan": "69893d6d7f5c10d8306c1b5fc64b71efc91aa6cd", "status": "affected", "versionType": "git" }, { "version": "2516ab1543fdd1f9d08385d73cae51f668a9f3dc", "lessThan": "f72df77600a43e59b3189e53b47f8685739867d3", "status": "affected", "versionType": "git" }, { "version": "2516ab1543fdd1f9d08385d73cae51f668a9f3dc", "lessThan": "c4ba982bd5084fa659ef518aaf159e4dab02ecda", "status": "affected", "versionType": "git" }, { "version": "2516ab1543fdd1f9d08385d73cae51f668a9f3dc", "lessThan": "54b06dc2a206b4d67349bb56b92d4bd32700b7b1", "status": "affected", "versionType": "git" }, { "version": "2516ab1543fdd1f9d08385d73cae51f668a9f3dc", "lessThan": "141318e62db87105b0103fccc59c9c5940da248d", "status": "affected", "versionType": "git" }, { "version": "2516ab1543fdd1f9d08385d73cae51f668a9f3dc", "lessThan": "09dadb5985023e27d4740ebd17e6fea4640110e5", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/block/nbd.c" ], "versions": [ { "version": "4.12", "status": "affected" }, { "version": "0", "lessThan": "4.12", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.283", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.247", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.198", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.122", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.47", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17.15", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.4", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "4.14.283" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "4.19.247" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.4.198" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.10.122" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.15.47" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.17.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.18.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/67e403136a0e1a55fef6a05f103a3979a39ad3fd" }, { "url": "https://git.kernel.org/stable/c/62d227f67a8c25d5e16f40e5290607f9306d2188" }, { "url": "https://git.kernel.org/stable/c/69893d6d7f5c10d8306c1b5fc64b71efc91aa6cd" }, { "url": "https://git.kernel.org/stable/c/f72df77600a43e59b3189e53b47f8685739867d3" }, { "url": "https://git.kernel.org/stable/c/c4ba982bd5084fa659ef518aaf159e4dab02ecda" }, { "url": "https://git.kernel.org/stable/c/54b06dc2a206b4d67349bb56b92d4bd32700b7b1" }, { "url": "https://git.kernel.org/stable/c/141318e62db87105b0103fccc59c9c5940da248d" }, { "url": "https://git.kernel.org/stable/c/09dadb5985023e27d4740ebd17e6fea4640110e5" } ], "title": "nbd: fix io hung while disconnecting device", "x_generator": { "engine": "bippy-1.2.0" } } } }