{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49080",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T01:49:39.247Z",
        "datePublished": "2025-02-26T01:54:41.176Z",
        "dateUpdated": "2026-05-11T18:52:38.593Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T18:52:38.593Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mempolicy: fix mpol_new leak in shared_policy_replace\n\nIf mpol_new is allocated but not used in restart loop, mpol_new will be\nfreed via mpol_put before returning to the caller.  But refcnt is not\ninitialized yet, so mpol_put could not do the right things and might\nleak the unused mpol_new.  This would happen if mempolicy was updated on\nthe shared shmem file while the sp->lock has been dropped during the\nmemory allocation.\n\nThis issue could be triggered easily with the below code snippet if\nthere are many processes doing the below work at the same time:\n\n  shmid = shmget((key_t)5566, 1024 * PAGE_SIZE, 0666|IPC_CREAT);\n  shm = shmat(shmid, 0, 0);\n  loop many times {\n    mbind(shm, 1024 * PAGE_SIZE, MPOL_LOCAL, mask, maxnode, 0);\n    mbind(shm + 128 * PAGE_SIZE, 128 * PAGE_SIZE, MPOL_DEFAULT, mask,\n          maxnode, 0);\n  }"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/mempolicy.c"
                    ],
                    "versions": [
                        {
                            "version": "42288fe366c4f1ce7522bc9f27d0bc2a81c55264",
                            "lessThan": "8510c2346d9e47a72b7f018a36ef0c39483e53d6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "42288fe366c4f1ce7522bc9f27d0bc2a81c55264",
                            "lessThan": "5e16dc5378abd749a836daa9ee4ab2c8d2668999",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "42288fe366c4f1ce7522bc9f27d0bc2a81c55264",
                            "lessThan": "39a32f3c06f6d68a530bf9612afa19f50f12e93d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
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                            "lessThan": "25f506273b6ae806fd46bfcb6fdaa5b9ec81a05b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "42288fe366c4f1ce7522bc9f27d0bc2a81c55264",
                            "lessThan": "f7e183b0a7136b6dc9c7b9b2a85a608a8feba894",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "42288fe366c4f1ce7522bc9f27d0bc2a81c55264",
                            "lessThan": "198932a14aeb19a15cf19e51e151d023bc4cd648",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "42288fe366c4f1ce7522bc9f27d0bc2a81c55264",
                            "lessThan": "6e00309ac716fa8225f0cbde2cd9c24f0e74ee21",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "42288fe366c4f1ce7522bc9f27d0bc2a81c55264",
                            "lessThan": "fe39ac59dbbf893b73b24e3184161d0bd06d6651",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "42288fe366c4f1ce7522bc9f27d0bc2a81c55264",
                            "lessThan": "4ad099559b00ac01c3726e5c95dc3108ef47d03e",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/mempolicy.c"
                    ],
                    "versions": [
                        {
                            "version": "3.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.8",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.9.311",
                            "lessThanOrEqual": "4.9.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.276",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.238",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.189",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.111",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.34",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.16.20",
                            "lessThanOrEqual": "5.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.17.3",
                            "lessThanOrEqual": "5.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18",
                            "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": "3.8",
                                    "versionEndExcluding": "4.9.311"
                                },
                                {
                                    "vulnerable": true,
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                                    "versionStartIncluding": "3.8",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/8510c2346d9e47a72b7f018a36ef0c39483e53d6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5e16dc5378abd749a836daa9ee4ab2c8d2668999"
                },
                {
                    "url": "https://git.kernel.org/stable/c/39a32f3c06f6d68a530bf9612afa19f50f12e93d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/25f506273b6ae806fd46bfcb6fdaa5b9ec81a05b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f7e183b0a7136b6dc9c7b9b2a85a608a8feba894"
                },
                {
                    "url": "https://git.kernel.org/stable/c/198932a14aeb19a15cf19e51e151d023bc4cd648"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6e00309ac716fa8225f0cbde2cd9c24f0e74ee21"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fe39ac59dbbf893b73b24e3184161d0bd06d6651"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4ad099559b00ac01c3726e5c95dc3108ef47d03e"
                }
            ],
            "title": "mm/mempolicy: fix mpol_new leak in shared_policy_replace",
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}