{"cve":"CVE-2025-37863","nvd":{"published":"2025-05-09T07:16:07.317","modified":"2026-06-17T09:15:35.453","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\novl: don't allow datadir only\n\nIn theory overlayfs could support upper layer directly referring to a data\nlayer, but there's no current use case for this.\n\nOriginally, when data-only layers were introduced, this wasn't allowed,\nonly introduced by the \"datadir+\" feature, but without actually handling\nthis case, resulting in an Oops.\n\nFix by disallowing datadir without lowerdir.","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/0874b629f65320778e7e3e206177770666d9db18","https://git.kernel.org/stable/c/21d2ffb0e9838a175064c22f3a9de97d1f56f27d","https://git.kernel.org/stable/c/b9e3579213ba648fa23f780e8d53e99011c62331","https://git.kernel.org/stable/c/eb3a04a8516ee9b5174379306f94279fc90424c4"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:01:22.920403922+00:00"},"epss":{"cve":"CVE-2025-37863","score":0.00281,"percentile":0.2065,"date":"2026-10-31"},"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."]}