{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-38627",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T04:51:24.029Z",
        "datePublished": "2025-08-22T16:00:35.856Z",
        "dateUpdated": "2026-06-01T16:05:27.072Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-01T16:05:27.072Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic\n\nThe decompress_io_ctx may be released asynchronously after\nI/O completion. If this file is deleted immediately after read,\nand the kworker of processing post_read_wq has not been executed yet\ndue to high workloads, It is possible that the inode(f2fs_inode_info)\nis evicted and freed before it is used f2fs_free_dic.\n\n    The UAF case as below:\n    Thread A                                      Thread B\n    - f2fs_decompress_end_io\n     - f2fs_put_dic\n      - queue_work\n        add free_dic work to post_read_wq\n                                                   - do_unlink\n                                                    - iput\n                                                     - evict\n                                                      - call_rcu\n    This file is deleted after read.\n\n    Thread C                                 kworker to process post_read_wq\n    - rcu_do_batch\n     - f2fs_free_inode\n      - kmem_cache_free\n     inode is freed by rcu\n                                             - process_scheduled_works\n                                              - f2fs_late_free_dic\n                                               - f2fs_free_dic\n                                                - f2fs_release_decomp_mem\n                                      read (dic->inode)->i_compress_algorithm\n\nThis patch store compress_algorithm and sbi in dic to avoid inode UAF.\n\nIn addition, the previous solution is deprecated in [1] may cause system hang.\n[1] https://lore.kernel.org/all/c36ab955-c8db-4a8b-a9d0-f07b5f426c3f@kernel.org"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/f2fs/compress.c",
                        "fs/f2fs/f2fs.h"
                    ],
                    "versions": [
                        {
                            "version": "bff139b49d9f70c1ac5384aac94554846aa834de",
                            "lessThan": "74cbeeca4f16823ba58c882e1d8b836c0e39c93d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bff139b49d9f70c1ac5384aac94554846aa834de",
                            "lessThan": "5d604d40cd3232b09cb339941ef958e49283ed0a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bff139b49d9f70c1ac5384aac94554846aa834de",
                            "lessThan": "cc81768212cdc509e5a986274db7bc24d18cde19",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bff139b49d9f70c1ac5384aac94554846aa834de",
                            "lessThan": "8fae5b6addd5f6895e03797b56e3c7b9f9cd15c9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bff139b49d9f70c1ac5384aac94554846aa834de",
                            "lessThan": "39868685c2a94a70762bc6d77dc81d781d05bff5",
                            "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/f2fs/compress.c",
                        "fs/f2fs/f2fs.h"
                    ],
                    "versions": [
                        {
                            "version": "6.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.118",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.78",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16.1",
                            "lessThanOrEqual": "6.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17",
                            "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": "6.0",
                                    "versionEndExcluding": "6.1.175"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.6.118"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.12.78"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.16.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.17"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/74cbeeca4f16823ba58c882e1d8b836c0e39c93d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5d604d40cd3232b09cb339941ef958e49283ed0a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cc81768212cdc509e5a986274db7bc24d18cde19"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8fae5b6addd5f6895e03797b56e3c7b9f9cd15c9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/39868685c2a94a70762bc6d77dc81d781d05bff5"
                }
            ],
            "title": "f2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}