| { |
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| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix potential out-of-bounds memory access in nilfs_find_entry()\n\nSyzbot reported that when searching for records in a directory where the\ninode's i_size is corrupted and has a large value, memory access outside\nthe folio/page range may occur, or a use-after-free bug may be detected if\nKASAN is enabled.\n\nThis is because nilfs_last_byte(), which is called by nilfs_find_entry()\nand others to calculate the number of valid bytes of directory data in a\npage from i_size and the page index, loses the upper 32 bits of the 64-bit\nsize information due to an inappropriate type of local variable to which\nthe i_size value is assigned.\n\nThis caused a large byte offset value due to underflow in the end address\ncalculation in the calling nilfs_find_entry(), resulting in memory access\nthat exceeds the folio/page size.\n\nFix this issue by changing the type of the local variable causing the bit\nloss from \"unsigned int\" to \"u64\". The return value of nilfs_last_byte()\nis also of type \"unsigned int\", but it is truncated so as not to exceed\nPAGE_SIZE and no bit loss occurs, so no change is required." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/nilfs2/dir.c" |
| ], |
| "versions": [ |
| { |
| "version": "2ba466d74ed74f073257f86e61519cb8f8f46184", |
| "lessThan": "09d6d05579fd46e61abf6e457bb100ff11f3a9d3", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "2ba466d74ed74f073257f86e61519cb8f8f46184", |
| "lessThan": "e3732102a9d638d8627d14fdf7b208462f0520e0", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "2ba466d74ed74f073257f86e61519cb8f8f46184", |
| "lessThan": "48eb6e7404948032bbe811c5affbe39f6b316951", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "2ba466d74ed74f073257f86e61519cb8f8f46184", |
| "lessThan": "5af8366625182f01f6d8465c9a3210574673af57", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "2ba466d74ed74f073257f86e61519cb8f8f46184", |
| "lessThan": "c3afea07477baccdbdec4483f8d5e59d42a3f67f", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "2ba466d74ed74f073257f86e61519cb8f8f46184", |
| "lessThan": "31f7b57a77d4c82a34ddcb6ff35b5aa577ef153e", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "2ba466d74ed74f073257f86e61519cb8f8f46184", |
| "lessThan": "985ebec4ab0a28bb5910c3b1481a40fbf7f9e61d", |
| "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/dir.c" |
| ], |
| "versions": [ |
| { |
| "version": "2.6.30", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "2.6.30", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.287", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.231", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.174", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.120", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.66", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.5", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.13", |
| "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": "2.6.30", |
| "versionEndExcluding": "5.4.287" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
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| }, |
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| "versionEndExcluding": "6.1.120" |
| }, |
| { |
| "vulnerable": true, |
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| "versionEndExcluding": "6.6.66" |
| }, |
| { |
| "vulnerable": true, |
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| }, |
| { |
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| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
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| } |
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| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/09d6d05579fd46e61abf6e457bb100ff11f3a9d3" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/e3732102a9d638d8627d14fdf7b208462f0520e0" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/48eb6e7404948032bbe811c5affbe39f6b316951" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/5af8366625182f01f6d8465c9a3210574673af57" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c3afea07477baccdbdec4483f8d5e59d42a3f67f" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/31f7b57a77d4c82a34ddcb6ff35b5aa577ef153e" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/985ebec4ab0a28bb5910c3b1481a40fbf7f9e61d" |
| } |
| ], |
| "title": "nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-56619", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
