{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2021-47254",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-04-10T18:59:19.539Z",
        "datePublished": "2024-05-21T14:19:49.475Z",
        "dateUpdated": "2024-08-04T05:32:07.867Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-05-29T05:04:45.147Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: Fix use-after-free in gfs2_glock_shrink_scan\n\nThe GLF_LRU flag is checked under lru_lock in gfs2_glock_remove_from_lru() to\nremove the glock from the lru list in __gfs2_glock_put().\n\nOn the shrink scan path, the same flag is cleared under lru_lock but because\nof cond_resched_lock(&lru_lock) in gfs2_dispose_glock_lru(), progress on the\nput side can be made without deleting the glock from the lru list.\n\nKeep GLF_LRU across the race window opened by cond_resched_lock(&lru_lock) to\nensure correct behavior on both sides - clear GLF_LRU after list_del under\nlru_lock."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/gfs2/glock.c"
                    ],
                    "versions": [
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "38ce32953450",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "92869945cc5b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "0364742decb0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "094bf5670e76",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "86fd5b27db74",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "a61156314b66",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "e87ef30fe73e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "1ab19c5de4c5",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/gfs2/glock.c"
                    ],
                    "versions": [
                        {
                            "version": "4.4.274",
                            "lessThanOrEqual": "4.4.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "4.9.274",
                            "lessThanOrEqual": "4.9.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "4.14.238",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "4.19.196",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.4.127",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.10.45",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.12.12",
                            "lessThanOrEqual": "5.12.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.13",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595"
                },
                {
                    "url": "https://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2"
                }
            ],
            "title": "gfs2: Fix use-after-free in gfs2_glock_shrink_scan",
            "x_generator": {
                "engine": "bippy-a5840b7849dd"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-06-17T17:37:55.520472Z",
                                "id": "CVE-2021-47254",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-06-17T17:39:42.605Z"
                }
            },
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T05:32:07.867Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            }
        ]
    }
}