CVE-2026-53015

critical

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

References

https://git.kernel.org/stable/c/858e4d98a86adf34584767388deb6c9b217f70c5

https://git.kernel.org/stable/c/582b0bf201157632cb5474c885989a6ebda46521

https://git.kernel.org/stable/c/4fc9b12e43a3f19a01a8fb61f7961be79de20253

https://git.kernel.org/stable/c/2d8c7edcb661812249469f4a5b62e9339118846f

Details

Source: Mitre, NVD

Published: 2026-06-24

Updated: 2026-06-24

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00168