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CVE-2026-53015

erofs: unify lcn as u64 for 32-bit platforms

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
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 152a333a589560bee002e4c96761f1b560a5793c
Version < 4fc9b12e43a3f19a01a8fb61f7961be79de20253
Status affected
Version 152a333a589560bee002e4c96761f1b560a5793c
Version < 858e4d98a86adf34584767388deb6c9b217f70c5
Status affected
Version 152a333a589560bee002e4c96761f1b560a5793c
Version < 582b0bf201157632cb5474c885989a6ebda46521
Status affected
Version 152a333a589560bee002e4c96761f1b560a5793c
Version < 2d8c7edcb661812249469f4a5b62e9339118846f
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.3
Status affected
Version 0
Version < 5.3
Status unaffected
Version <= 6.12.*
Version 6.12.91
Status unaffected
Version <= 6.18.*
Version 6.18.33
Status unaffected
Version <= 7.0.*
Version 7.0.10
Status unaffected
Version <= *
Version 7.1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.063
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
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