CVE-2026-53015
Description
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
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 152a333a589560bee002e4c96761f1b560a5793c < 4fc9b12e43a3f19a01a8fb61f7961be79de20253, 152a333a589560bee002e4c96761f1b560a5793c < 858e4d98a86adf34584767388deb6c9b217f70c5, 152a333a589560bee002e4c96761f1b560a5793c < 582b0bf201157632cb5474c885989a6ebda46521, 152a333a589560bee002e4c96761f1b560a5793c < 2d8c7edcb661812249469f4a5b62e9339118846f |
| Linux | Linux | — | 5.3, 0 < 5.3, 6.12.91 ≤ 6.12.*, 6.18.33 ≤ 6.18.* … |
References (4)