erofs: unify lcn as u64 for 32-bit platforms
In the Linux kernel, the following vulnerability has been resolved: erofs: unify lcn as u64 for 32-bit platforms As sashiko reported [1], `lcn` was typed as `unsigned long` (or `unsigned int` sometimes), which is only 32 bits wide on 32-bit platforms, which causes `(lcn << lclusterbits)` to be truncated at 4 GiB. In order to consolidate the logic, just use `u64` consistently around the codebase. [1] https://sashiko.dev/r/20260420034612.1899973-1-hsiangkao%40linux.alibaba.com
CVE-2026-53015
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-53015
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "152a333a589560bee002e4c96761f1b560a5793c",
"lessThan": "18f9f3ddbf2ed6d245a4c6f91c51f7248f8a982c",
"versionType": "git"
},
{
"status": "affected",
"version": "152a333a589560bee002e4c96761f1b560a5793c",
"lessThan": "4fc9b12e43a3f19a01a8fb61f7961be79de20253",
"versionType": "git"
},
{
"status": "affected",
"version": "152a333a589560bee002e4c96761f1b560a5793c",
"lessThan": "858e4d98a86adf34584767388deb6c9b217f70c5",
"versionType": "git"
},
{
"status": "affected",
"version": "152a333a589560bee002e4c96761f1b560a5793c",
"lessThan": "582b0bf201157632cb5474c885989a6ebda46521",
"versionType": "git"
},
{
"status": "affected",
"version": "152a333a589560bee002e4c96761f1b560a5793c",
"lessThan": "2d8c7edcb661812249469f4a5b62e9339118846f",
"versionType": "git"
}
],
"programFiles": [
"fs/erofs/zmap.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.91",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.33",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.10",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/erofs/zmap.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53015
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46353 · Revision 1
- Added to Heist Feed
- Publisher date