| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/jfs: Prevent integer overflow in AG size calculation\n\nThe JFS filesystem calculates allocation group (AG) size using 1 <<\nl2agsize in dbExtendFS(). When l2agsize exceeds 31 (possible with >2TB\naggregates on 32-bit systems), this 32-bit shift operation causes undefined\nbehavior and improper AG sizing.\n\nOn 32-bit architectures:\n- Left-shifting 1 by 32+ bits results in 0 due to integer overflow\n- This creates invalid AG sizes (0 or garbage values) in\nsbi->bmap->db_agsize\n- Subsequent block allocations would reference invalid AG structures\n- Could lead to:\n - Filesystem corruption during extend operations\n - Kernel crashes due to invalid memory accesses\n - Security vulnerabilities via malformed on-disk structures\n\nFix by casting to s64 before shifting:\nbmp->db_agsize = (s64)1 << l2agsize;\n\nThis ensures 64-bit arithmetic even on 32-bit architectures. The cast\nmatches the data type of db_agsize (s64) and follows similar patterns in\nJFS block calculation code.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/jfs/jfs_dmap.c" |
| ], |
| "versions": [ |
| { |
| "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", |
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| "versionType": "git" |
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| { |
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| "lessThan": "8bb29629a5e4090e1ef7199cb42db04a52802239", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
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| "lessThan": "3d8a45f87010a802aa214bf39702ca9d99cbf3ba", |
| "status": "affected", |
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| "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", |
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| }, |
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| "lessThan": "7ccf3b35274512b60ecb614e0637e76bd6f2d829", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", |
| "lessThan": "c802a6a4009f585111f903e810b3be9c6d0da329", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", |
| "lessThan": "211ed8f5e39e61f9e4d18edd64ce8005a67a1b2a", |
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| }, |
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| "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", |
| "lessThan": "ec34cdf4f917cc6abd306cf091f8b8361fedac88", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", |
| "lessThan": "7fcbf789629cdb9fbf4e2172ce31136cfed11e5e", |
| "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/jfs/jfs_dmap.c" |
| ], |
| "versions": [ |
| { |
| "version": "5.4.293", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.237", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.181", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.135", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.88", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.24", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.13.12", |
| "lessThanOrEqual": "6.13.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.14.3", |
| "lessThanOrEqual": "6.14.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.15", |
| "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:*:*:*:*:*:*:*:*", |
| "versionEndExcluding": "5.4.293" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionEndExcluding": "5.10.237" |
| }, |
| { |
| "vulnerable": true, |
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| }, |
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| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionEndExcluding": "6.1.135" |
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| { |
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| "versionEndExcluding": "6.6.88" |
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| "versionEndExcluding": "6.12.24" |
| }, |
| { |
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| "versionEndExcluding": "6.13.12" |
| }, |
| { |
| "vulnerable": true, |
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| "versionEndExcluding": "6.14.3" |
| }, |
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| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionEndExcluding": "6.15" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/dd07a985e2ded47b6c7d69fc93c1fe02977c8454" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/8bb29629a5e4090e1ef7199cb42db04a52802239" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/3d8a45f87010a802aa214bf39702ca9d99cbf3ba" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/55edbf5dbf60a8195c21e92124c4028939ae16b2" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/7ccf3b35274512b60ecb614e0637e76bd6f2d829" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c802a6a4009f585111f903e810b3be9c6d0da329" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/211ed8f5e39e61f9e4d18edd64ce8005a67a1b2a" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/ec34cdf4f917cc6abd306cf091f8b8361fedac88" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/7fcbf789629cdb9fbf4e2172ce31136cfed11e5e" |
| } |
| ], |
| "title": "fs/jfs: Prevent integer overflow in AG size calculation", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2025-37858", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
