{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-26869", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.184Z", "datePublished": "2024-04-17T10:27:30.100Z", "dateUpdated": "2026-08-05T11:28:00.887Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:28:00.887Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to truncate meta inode pages forcely\n\nBelow race case can cause data corruption:\n\nThread A\t\t\t\tGC thread\n\t\t\t\t\t- gc_data_segment\n\t\t\t\t\t - ra_data_block\n\t\t\t\t\t - locked meta_inode page\n- f2fs_inplace_write_data\n - invalidate_mapping_pages\n : fail to invalidate meta_inode page\n due to lock failure or dirty|writeback\n status\n - f2fs_submit_page_bio\n : write last dirty data to old blkaddr\n\t\t\t\t\t - move_data_block\n\t\t\t\t\t - load old data from meta_inode page\n\t\t\t\t\t - f2fs_submit_page_write\n\t\t\t\t\t : write old data to new blkaddr\n\nBecause invalidate_mapping_pages() will skip invalidating page which\nhas unclear status including locked, dirty, writeback and so on, so\nwe need to use truncate_inode_pages_range() instead of\ninvalidate_mapping_pages() to make sure meta_inode page will be dropped." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable paths are entered through ordinary local file operations on a mounted f2fs volume — buffered overwrite with IPU, fdatasync, or O_DIRECT write — with the racing side driven by the in-kernel GC thread. No network or physical access is involved.\nAC:L - The attacker controls the write side outright and can drive the GC side at will by fragmenting/filling the filesystem to keep background and foreground GC continuously active; the invalidation failure window is the full duration of GC's read bio, during which ra_data_block() holds the meta page locked, so the skip is the expected outcome rather than a narrow accident, and the attempt can be repeated indefinitely.\nPR:L - Any unprivileged local user with write access to a file on an f2fs volume can reach both f2fs_inplace_write_data() and the F2FS_GET_BLOCK_DIO path; the CAP_SYS_ADMIN check on f2fs_ioc_gc() is not a barrier because the default background GC thread and f2fs_balance_fs()-triggered foreground GC provide the racing side without any privilege.\nUI:N - The attacker's own process performs the writes and the GC thread runs automatically as a kernel thread; no victim action of any kind is required.\nS:U - The corruption is confined to the f2fs filesystem and kernel managing it, with no crossing into a different security authority such as a hypervisor or IOMMU domain.\nC:H - META_MAPPING is a global cache keyed by physical block address, and f2fs_invalidate_blocks() can likewise fail to evict, so a stale page can outlive the block's reallocation to a different inode — move_data_block() then copies the previous owner's on-disk content into the attacker's file, disclosing another user's data (plaintext for verity/compressed inodes).\nI:H - This is a direct, silent, persistent on-disk data corruption primitive: freshly written data is overwritten with stale contents, and via physical-block reuse an attacker's stale data can be written into another inode's blocks, modifying data outside the attacker's control with no error reported.\nA:H - Corrupted blocks landing in compressed clusters or encrypted directory/dentry blocks produce decompression and directory-parse failures that raise EFSCORRUPTED, set SBI_NEED_FSCK, and trigger f2fs_handle_error() shutdown (panic under errors=panic or CONFIG_F2FS_CHECK_FS), alongside irrecoverable loss of the corrupted file data." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/f2fs/checkpoint.c", "fs/f2fs/f2fs.h", "fs/f2fs/segment.c", "include/linux/f2fs_fs.h" ], "versions": [ { "version": "6aa58d8ad20a3323f42274c25820a6f54192422d", "lessThan": "c92f2927df860a60ba815d3ee610a944b92a8694", "status": "affected", "versionType": "git" }, { "version": "6aa58d8ad20a3323f42274c25820a6f54192422d", "lessThan": "77bfdb89cc222fc7bfe198eda77bdc427d5ac189", "status": "affected", "versionType": "git" }, { "version": "6aa58d8ad20a3323f42274c25820a6f54192422d", "lessThan": "04226d8e3c4028dc451e9d8777356ec0f7919253", "status": "affected", "versionType": "git" }, { "version": "6aa58d8ad20a3323f42274c25820a6f54192422d", "lessThan": "9f0c4a46be1fe9b97dbe66d49204c1371e3ece65", "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/checkpoint.c", "fs/f2fs/f2fs.h", "fs/f2fs/segment.c", "include/linux/f2fs_fs.h" ], "versions": [ { "version": "4.19", "status": "affected" }, { "version": "0", "lessThan": "4.19", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "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": "4.19", "versionEndExcluding": "6.6.23" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.7.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.8.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c92f2927df860a60ba815d3ee610a944b92a8694" }, { "url": "https://git.kernel.org/stable/c/77bfdb89cc222fc7bfe198eda77bdc427d5ac189" }, { "url": "https://git.kernel.org/stable/c/04226d8e3c4028dc451e9d8777356ec0f7919253" }, { "url": "https://git.kernel.org/stable/c/9f0c4a46be1fe9b97dbe66d49204c1371e3ece65" } ], "title": "f2fs: fix to truncate meta inode pages forcely", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-12T17:28:33.962208Z", "id": "CVE-2024-26869", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-12T17:31:41.499Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:21:04.218Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/c92f2927df860a60ba815d3ee610a944b92a8694", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/77bfdb89cc222fc7bfe198eda77bdc427d5ac189", "tags": [ "x_transferred" ] }, { 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