| { |
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| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix double-free of blocks due to wrong extents moved_len\n\nIn ext4_move_extents(), moved_len is only updated when all moves are\nsuccessfully executed, and only discards orig_inode and donor_inode\npreallocations when moved_len is not zero. When the loop fails to exit\nafter successfully moving some extents, moved_len is not updated and\nremains at 0, so it does not discard the preallocations.\n\nIf the moved extents overlap with the preallocated extents, the\noverlapped extents are freed twice in ext4_mb_release_inode_pa() and\next4_process_freed_data() (as described in commit 94d7c16cbbbd (\"ext4:\nFix double-free of blocks with EXT4_IOC_MOVE_EXT\")), and bb_free is\nincremented twice. Hence when trim is executed, a zero-division bug is\ntriggered in mb_update_avg_fragment_size() because bb_free is not zero\nand bb_fragments is zero.\n\nTherefore, update move_len after each extent move to avoid the issue." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/ext4/move_extent.c" |
| ], |
| "versions": [ |
| { |
| "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a", |
| "lessThan": "b4fbb89d722cbb16beaaea234b7230faaaf68c71", |
| "status": "affected", |
| "versionType": "git" |
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| "lessThan": "afbcad9ae7d6d11608399188f03a837451b6b3a1", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a", |
| "lessThan": "d033a555d9a1cf53dbf3301af7199cc4a4c8f537", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a", |
| "lessThan": "afba9d11320dad5ce222ac8964caf64b7b4bedb1", |
| "status": "affected", |
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| "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a", |
| "lessThan": "185eab30486ba3e7bf8b9c2e049c79a06ffd2bc1", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a", |
| "lessThan": "2883940b19c38d5884c8626483811acf4d7e148f", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a", |
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| "versionType": "git" |
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| "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a", |
| "lessThan": "55583e899a5357308274601364741a83e78d6ac4", |
| "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/ext4/move_extent.c" |
| ], |
| "versions": [ |
| { |
| "version": "3.18", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "3.18", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.307", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.269", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.210", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.149", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.79", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.18", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.7.6", |
| "lessThanOrEqual": "6.7.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.8", |
| "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": "3.18", |
| "versionEndExcluding": "4.19.307" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "5.4.269" |
| }, |
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| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
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| }, |
| { |
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| }, |
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| }, |
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| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "6.6.18" |
| }, |
| { |
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| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "6.7.6" |
| }, |
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| "vulnerable": true, |
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| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "6.8" |
| } |
| ] |
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| ] |
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| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/b4fbb89d722cbb16beaaea234b7230faaaf68c71" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/afbcad9ae7d6d11608399188f03a837451b6b3a1" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/d033a555d9a1cf53dbf3301af7199cc4a4c8f537" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/afba9d11320dad5ce222ac8964caf64b7b4bedb1" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/185eab30486ba3e7bf8b9c2e049c79a06ffd2bc1" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/2883940b19c38d5884c8626483811acf4d7e148f" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/559ddacb90da1d8786dd8ec4fd76bbfa404eaef6" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/55583e899a5357308274601364741a83e78d6ac4" |
| } |
| ], |
| "title": "ext4: fix double-free of blocks due to wrong extents moved_len", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-26704", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
