{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50639",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-08T23:57:43.370Z",
        "datePublished": "2025-12-09T00:00:12.576Z",
        "dateUpdated": "2026-05-11T19:22:44.249Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:22:44.249Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio-wq: Fix memory leak in worker creation\n\nIf the CPU mask allocation for a node fails, then the memory allocated for\nthe 'io_wqe' struct of the current node doesn't get freed on the error\nhandling path, since it has not yet been added to the 'wqes' array.\n\nThis was spotted when fuzzing v6.1-rc1 with Syzkaller:\nBUG: memory leak\nunreferenced object 0xffff8880093d5000 (size 1024):\n  comm \"syz-executor.2\", pid 7701, jiffies 4295048595 (age 13.900s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [<00000000cb463369>] __kmem_cache_alloc_node+0x18e/0x720\n    [<00000000147a3f9c>] kmalloc_node_trace+0x2a/0x130\n    [<000000004e107011>] io_wq_create+0x7b9/0xdc0\n    [<00000000c38b2018>] io_uring_alloc_task_context+0x31e/0x59d\n    [<00000000867399da>] __io_uring_add_tctx_node.cold+0x19/0x1ba\n    [<000000007e0e7a79>] io_uring_setup.cold+0x1b80/0x1dce\n    [<00000000b545e9f6>] __x64_sys_io_uring_setup+0x5d/0x80\n    [<000000008a8a7508>] do_syscall_64+0x5d/0x90\n    [<000000004ac08bec>] entry_SYSCALL_64_after_hwframe+0x63/0xcd"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "io_uring/io-wq.c"
                    ],
                    "versions": [
                        {
                            "version": "0e03496d1967abf1ebb151a24318c07d07f41f7f",
                            "lessThan": "b6e2c54be37d5eb4f6666e6aa59cd0581c7ffc3c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0e03496d1967abf1ebb151a24318c07d07f41f7f",
                            "lessThan": "ed981911a7c90a604f4a2bee908ab07e3b786aca",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0e03496d1967abf1ebb151a24318c07d07f41f7f",
                            "lessThan": "996d3efeb091c503afd3ee6b5e20eabf446fd955",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "io_uring/io-wq.c"
                    ],
                    "versions": [
                        {
                            "version": "5.14",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.14",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.75",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.4",
                            "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": "5.14",
                                    "versionEndExcluding": "5.15.75"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.14",
                                    "versionEndExcluding": "6.0.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.14",
                                    "versionEndExcluding": "6.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/b6e2c54be37d5eb4f6666e6aa59cd0581c7ffc3c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ed981911a7c90a604f4a2bee908ab07e3b786aca"
                },
                {
                    "url": "https://git.kernel.org/stable/c/996d3efeb091c503afd3ee6b5e20eabf446fd955"
                }
            ],
            "title": "io-wq: Fix memory leak in worker creation",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}