medium5.5
CVE-2026-53015
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 `u…
Impact
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
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.3 before 6.12.91 from 6.13 before 6.18.33 from 6.19 before 7.0.10 |
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/18f9f3ddbf2ed6d245a4c6f91c51f7248f8a982c
- https://git.kernel.org/stable/c/2d8c7edcb661812249469f4a5b62e9339118846f
- https://git.kernel.org/stable/c/4fc9b12e43a3f19a01a8fb61f7961be79de20253
- https://git.kernel.org/stable/c/582b0bf201157632cb5474c885989a6ebda46521
- https://git.kernel.org/stable/c/858e4d98a86adf34584767388deb6c9b217f70c5
- https://git.kernel.org/stable/c/d142250132454bf86cba87018fb2d29c482dacd6