{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50552",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-10-07T15:15:38.669Z",
        "datePublished": "2025-10-07T15:21:14.060Z",
        "dateUpdated": "2026-06-01T16:04:03.010Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-01T16:04:03.010Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: use quiesced elevator switch when reinitializing queues\n\nThe hctx's run_work may be racing with the elevator switch when\nreinitializing hardware queues. The queue is merely frozen in this\ncontext, but that only prevents requests from allocating and doesn't\nstop the hctx work from running. The work may get an elevator pointer\nthat's being torn down, and can result in use-after-free errors and\nkernel panics (example below). Use the quiesced elevator switch instead,\nand make the previous one static since it is now only used locally.\n\n  nvme nvme0: resetting controller\n  nvme nvme0: 32/0/0 default/read/poll queues\n  BUG: kernel NULL pointer dereference, address: 0000000000000008\n  #PF: supervisor read access in kernel mode\n  #PF: error_code(0x0000) - not-present page\n  PGD 80000020c8861067 P4D 80000020c8861067 PUD 250f8c8067 PMD 0\n  Oops: 0000 [#1] SMP PTI\n  Workqueue: kblockd blk_mq_run_work_fn\n  RIP: 0010:kyber_has_work+0x29/0x70\n\n...\n\n  Call Trace:\n   __blk_mq_do_dispatch_sched+0x83/0x2b0\n   __blk_mq_sched_dispatch_requests+0x12e/0x170\n   blk_mq_sched_dispatch_requests+0x30/0x60\n   __blk_mq_run_hw_queue+0x2b/0x50\n   process_one_work+0x1ef/0x380\n   worker_thread+0x2d/0x3e0"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "block/blk-mq.c",
                        "block/blk.h",
                        "block/elevator.c"
                    ],
                    "versions": [
                        {
                            "version": "d48ece209f82c9ce07be942441b53d3fa3664936",
                            "lessThan": "0f90015383cd3f1128bebfbe7a97122d97808046",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d48ece209f82c9ce07be942441b53d3fa3664936",
                            "lessThan": "9646443f28f33ec545ae303e613c3f476fad4dc1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d48ece209f82c9ce07be942441b53d3fa3664936",
                            "lessThan": "63a681bcc32a43528ce0f690569f7f48e59c3963",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d48ece209f82c9ce07be942441b53d3fa3664936",
                            "lessThan": "c478b3b2900f1834cf9eda5bfef0d5696099505d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d48ece209f82c9ce07be942441b53d3fa3664936",
                            "lessThan": "8237c01f1696bc53c470493bf1fe092a107648a6",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "block/blk-mq.c",
                        "block/blk.h",
                        "block/elevator.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.258",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19.17",
                            "lessThanOrEqual": "5.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.3",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1",
                            "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": "4.19",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.15.209"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.19.17"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.0.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0f90015383cd3f1128bebfbe7a97122d97808046"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9646443f28f33ec545ae303e613c3f476fad4dc1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/63a681bcc32a43528ce0f690569f7f48e59c3963"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c478b3b2900f1834cf9eda5bfef0d5696099505d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8237c01f1696bc53c470493bf1fe092a107648a6"
                }
            ],
            "title": "blk-mq: use quiesced elevator switch when reinitializing queues",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}