{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50009",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-06-18T10:57:27.388Z",
        "datePublished": "2025-06-18T11:01:14.219Z",
        "dateUpdated": "2026-05-11T19:10:57.540Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:10:57.540Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix null-ptr-deref in f2fs_get_dnode_of_data\n\nThere is issue as follows when test f2fs atomic write:\nF2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock\nF2FS-fs (loop0): invalid crc_offset: 0\nF2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix.\nF2FS-fs (loop0): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix.\n==================================================================\nBUG: KASAN: null-ptr-deref in f2fs_get_dnode_of_data+0xac/0x16d0\nRead of size 8 at addr 0000000000000028 by task rep/1990\n\nCPU: 4 PID: 1990 Comm: rep Not tainted 5.19.0-rc6-next-20220715 #266\nCall Trace:\n <TASK>\n dump_stack_lvl+0x6e/0x91\n print_report.cold+0x49a/0x6bb\n kasan_report+0xa8/0x130\n f2fs_get_dnode_of_data+0xac/0x16d0\n f2fs_do_write_data_page+0x2a5/0x1030\n move_data_page+0x3c5/0xdf0\n do_garbage_collect+0x2015/0x36c0\n f2fs_gc+0x554/0x1d30\n f2fs_balance_fs+0x7f5/0xda0\n f2fs_write_single_data_page+0xb66/0xdc0\n f2fs_write_cache_pages+0x716/0x1420\n f2fs_write_data_pages+0x84f/0x9a0\n do_writepages+0x130/0x3a0\n filemap_fdatawrite_wbc+0x87/0xa0\n file_write_and_wait_range+0x157/0x1c0\n f2fs_do_sync_file+0x206/0x12d0\n f2fs_sync_file+0x99/0xc0\n vfs_fsync_range+0x75/0x140\n f2fs_file_write_iter+0xd7b/0x1850\n vfs_write+0x645/0x780\n ksys_write+0xf1/0x1e0\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nAs 3db1de0e582c commit changed atomic write way which new a cow_inode for\natomic write file, and also mark cow_inode as FI_ATOMIC_FILE.\nWhen f2fs_do_write_data_page write cow_inode will use cow_inode's cow_inode\nwhich is NULL. Then will trigger null-ptr-deref.\nTo solve above issue, introduce FI_COW_FILE flag for COW inode.\n\nFiexes: 3db1de0e582c(\"f2fs: change the current atomic write way\")"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/f2fs/f2fs.h",
                        "fs/f2fs/file.c",
                        "fs/f2fs/segment.c"
                    ],
                    "versions": [
                        {
                            "version": "98e4da8ca301e062d79ae168c67e56f3c3de3ce4",
                            "lessThan": "0f63e33eca6fa29a11c76fa31db5fe1cada5ad6e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "98e4da8ca301e062d79ae168c67e56f3c3de3ce4",
                            "lessThan": "7000ad53ec1b17bd2fac76984b7b0c663755cbb7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "98e4da8ca301e062d79ae168c67e56f3c3de3ce4",
                            "lessThan": "4a2c5b7994960fac29cf8a3f4e62855bae1b27d4",
                            "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/f2fs.h",
                        "fs/f2fs/file.c",
                        "fs/f2fs/segment.c"
                    ],
                    "versions": [
                        {
                            "version": "3.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.8",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18.18",
                            "lessThanOrEqual": "5.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19.4",
                            "lessThanOrEqual": "5.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0",
                            "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": "5.18.18"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.8",
                                    "versionEndExcluding": "5.19.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.8",
                                    "versionEndExcluding": "6.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0f63e33eca6fa29a11c76fa31db5fe1cada5ad6e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7000ad53ec1b17bd2fac76984b7b0c663755cbb7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4a2c5b7994960fac29cf8a3f4e62855bae1b27d4"
                }
            ],
            "title": "f2fs: fix null-ptr-deref in f2fs_get_dnode_of_data",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}