{"id":"DEBIAN-CVE-2025-37863","details":"In the Linux kernel, the following vulnerability has been resolved:  ovl: don't allow datadir only  In theory overlayfs could support upper layer directly referring to a data layer, but there's no current use case for this.  Originally, when data-only layers were introduced, this wasn't allowed, only introduced by the \"datadir+\" feature, but without actually handling this case, resulting in an Oops.  Fix by disallowing datadir without lowerdir.","modified":"2026-08-27T23:05:28.736695033Z","published":"2025-05-09T07:16:07.317Z","upstream":["CVE-2025-37863"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-37863"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.25-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-37863.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.25-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-37863.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}