Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 152a333a589560bee002e4c96761f1b560a5793c before 18f9f3ddbf2ed6d245a4c6f91c51f7248f8a982c; affected 152a333a589560bee002e4c96761f1b560a5793c before 4fc9b12e43a3f19a01a8fb61f7961be79de20253; affected 152a333a589560bee002e4c96761f1b560a5793c before 858e4d98a86adf34584767388deb6c9b217f70c5; affected 152a333a589560bee002e4c96761f1b560a5793c before 582b0bf201157632cb5474c885989a6ebda46521; affected 152a333a589560bee002e4c96761f1b560a5793c before 2d8c7edcb661812249469f4a5b62e9339118846f |
| Linux / Linux | affected 5.3; unaffected 0 before 5.3; unaffected 6.6.160 through 6.6.*; unaffected 6.12.91 through 6.12.*; unaffected 6.18.33 through 6.18.*; unaffected 7.0.10 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/18f9f3ddbf2ed6d245a4c6f91c51f7248f8a982c
- https://git.kernel.org/stable/c/4fc9b12e43a3f19a01a8fb61f7961be79de20253
- https://git.kernel.org/stable/c/858e4d98a86adf34584767388deb6c9b217f70c5
- https://git.kernel.org/stable/c/582b0bf201157632cb5474c885989a6ebda46521
- https://git.kernel.org/stable/c/2d8c7edcb661812249469f4a5b62e9339118846f