{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53015", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.378Z", "datePublished": "2026-06-24T16:29:25.396Z", "dateUpdated": "2026-06-24T16:29:25.396Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:29:25.396Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: unify lcn as u64 for 32-bit platforms\n\nAs sashiko reported [1], `lcn` was typed as `unsigned long` (or\n`unsigned int` sometimes), which is only 32 bits wide on 32-bit\nplatforms, which causes `(lcn << lclusterbits)` to be truncated\nat 4 GiB.\n\nIn order to consolidate the logic, just use `u64` consistently\naround the codebase.\n\n[1] https://sashiko.dev/r/20260420034612.1899973-1-hsiangkao%40linux.alibaba.com"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/erofs/zmap.c"], "versions": [{"version": "152a333a589560bee002e4c96761f1b560a5793c", "lessThan": "4fc9b12e43a3f19a01a8fb61f7961be79de20253", "status": "affected", "versionType": "git"}, {"version": "152a333a589560bee002e4c96761f1b560a5793c", "lessThan": "858e4d98a86adf34584767388deb6c9b217f70c5", "status": "affected", "versionType": "git"}, {"version": "152a333a589560bee002e4c96761f1b560a5793c", "lessThan": "582b0bf201157632cb5474c885989a6ebda46521", "status": "affected", "versionType": "git"}, {"version": "152a333a589560bee002e4c96761f1b560a5793c", "lessThan": "2d8c7edcb661812249469f4a5b62e9339118846f", "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/erofs/zmap.c"], "versions": [{"version": "5.3", "status": "affected"}, {"version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.3", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4fc9b12e43a3f19a01a8fb61f7961be79de20253"}, {"url": "https://git.kernel.org/stable/c/858e4d98a86adf34584767388deb6c9b217f70c5"}, {"url": "https://git.kernel.org/stable/c/582b0bf201157632cb5474c885989a6ebda46521"}, {"url": "https://git.kernel.org/stable/c/2d8c7edcb661812249469f4a5b62e9339118846f"}], "title": "erofs: unify lcn as u64 for 32-bit platforms", "x_generator": {"engine": "bippy-1.2.0"}}}}

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