CVE-2026-53015
Medium
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
SeverityMedium
CVSS5.5
Exploit probability2. percentile0.1%
Product
Linux Kernel
PublishedJun 24, 2026
First seenJun 24, 2026
How to fix
Update
- linux linux_kernel6.12.91, 6.18.33, 7.0.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.3 ≤ v < 6.12.91, 6.13 ≤ v < 6.18.33, 6.19 ≤ v < 7.0.10 | 6.12.91, 6.18.33, 7.0.10 |
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