Vulnerability 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
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.3, < 6.12.91 |
References
- https://git.kernel.org/stable/c/2d8c7edcb661812249469f4a5b62e9339118846fPatch
- https://git.kernel.org/stable/c/4fc9b12e43a3f19a01a8fb61f7961be79de20253Patch
- https://git.kernel.org/stable/c/582b0bf201157632cb5474c885989a6ebda46521Patch
- https://git.kernel.org/stable/c/858e4d98a86adf34584767388deb6c9b217f70c5Patch
FAQ
What is CVE-2026-53015?
CVE-2026-53015 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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` someti...
How severe is CVE-2026-53015?
CVE-2026-53015 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53015?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.