{"cve":"CVE-2026-53015","nvd":{"published":"2026-06-24T17:17:12.790","modified":"2026-10-21T13:19:08.717","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: unify lcn as u64 for 32-bit platforms\n\nAs sashiko reported [1], `lcn` was typed as `unsigned long` (or\n`unsigned int` sometimes), which is only 32 bits wide on 32-bit\nplatforms, which causes `(lcn << lclusterbits)` to be truncated\nat 4 GiB.\n\nIn order to consolidate the logic, just use `u64` consistently\naround the codebase.\n\n[1] https://sashiko.dev/r/20260420034612.1899973-1-hsiangkao%40linux.alibaba.com","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["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"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-53015","score":0.00122,"percentile":0.01959,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}