| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix failure to detect DAT corruption in btree and direct mappings\n\nPatch series \"nilfs2: fix kernel bug at submit_bh_wbc()\".\n\nThis resolves a kernel BUG reported by syzbot. Since there are two\nflaws involved, I've made each one a separate patch.\n\nThe first patch alone resolves the syzbot-reported bug, but I think\nboth fixes should be sent to stable, so I've tagged them as such.\n\n\nThis patch (of 2):\n\nSyzbot has reported a kernel bug in submit_bh_wbc() when writing file data\nto a nilfs2 file system whose metadata is corrupted.\n\nThere are two flaws involved in this issue.\n\nThe first flaw is that when nilfs_get_block() locates a data block using\nbtree or direct mapping, if the disk address translation routine\nnilfs_dat_translate() fails with internal code -ENOENT due to DAT metadata\ncorruption, it can be passed back to nilfs_get_block(). This causes\nnilfs_get_block() to misidentify an existing block as non-existent,\ncausing both data block lookup and insertion to fail inconsistently.\n\nThe second flaw is that nilfs_get_block() returns a successful status in\nthis inconsistent state. This causes the caller __block_write_begin_int()\nor others to request a read even though the buffer is not mapped,\nresulting in a BUG_ON check for the BH_Mapped flag in submit_bh_wbc()\nfailing.\n\nThis fixes the first issue by changing the return value to code -EINVAL\nwhen a conversion using DAT fails with code -ENOENT, avoiding the\nconflicting condition that leads to the kernel bug described above. Here,\ncode -EINVAL indicates that metadata corruption was detected during the\nblock lookup, which will be properly handled as a file system error and\nconverted to -EIO when passing through the nilfs2 bmap layer." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/nilfs2/btree.c", |
| "fs/nilfs2/direct.c" |
| ], |
| "versions": [ |
| { |
| "version": "c3a7abf06ce719a51139e62a034590be99abbc2c", |
| "lessThan": "b67189690eb4b7ecc84ae16fa1e880e0123eaa35", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "lessThan": "9cbe1ad5f4354f4df1445e5f4883983328cd6d8e", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "version": "c3a7abf06ce719a51139e62a034590be99abbc2c", |
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| "version": "c3a7abf06ce719a51139e62a034590be99abbc2c", |
| "lessThan": "2e2619ff5d0def4bb6c2037a32a6eaa28dd95c84", |
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| "lessThan": "f69e81396aea66304d214f175aa371f1b5578862", |
| "status": "affected", |
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| }, |
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| "version": "c3a7abf06ce719a51139e62a034590be99abbc2c", |
| "lessThan": "a8e4d098de1c0f4c5c1f2ed4633a860f0da6d713", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "version": "c3a7abf06ce719a51139e62a034590be99abbc2c", |
| "lessThan": "82827ca21e7c8a91384c5baa656f78a5adfa4ab4", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "c3a7abf06ce719a51139e62a034590be99abbc2c", |
| "lessThan": "f2f26b4a84a0ef41791bd2d70861c8eac748f4ba", |
| "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/nilfs2/btree.c", |
| "fs/nilfs2/direct.c" |
| ], |
| "versions": [ |
| { |
| "version": "2.6.31", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "2.6.31", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.312", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.274", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.215", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.154", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.84", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.24", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.7.12", |
| "lessThanOrEqual": "6.7.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.8.3", |
| "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:*:*:*:*:*:*:*:*", |
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| "versionEndExcluding": "4.19.312" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.31", |
| "versionEndExcluding": "5.4.274" |
| }, |
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| { |
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| }, |
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| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/b67189690eb4b7ecc84ae16fa1e880e0123eaa35" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/9cbe1ad5f4354f4df1445e5f4883983328cd6d8e" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c3b5c5c31e723b568f83d8cafab8629d9d830ffb" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/2e2619ff5d0def4bb6c2037a32a6eaa28dd95c84" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/46b832e09d43b394ac0f6d9485d2b1a06593f0b7" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f69e81396aea66304d214f175aa371f1b5578862" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/a8e4d098de1c0f4c5c1f2ed4633a860f0da6d713" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/82827ca21e7c8a91384c5baa656f78a5adfa4ab4" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f2f26b4a84a0ef41791bd2d70861c8eac748f4ba" |
| } |
| ], |
| "title": "nilfs2: fix failure to detect DAT corruption in btree and direct mappings", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-26956", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
