A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.
https://www.debian.org/security/2023/dsa-5402
https://security.netapp.com/advisory/ntap-20230420-0004/
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
Published: 2023-03-22
Updated: 2025-06-18
Named Vulnerability: OverlayFS/FUSENamed Vulnerability: OverlayFS / FUSE kernel exploitNamed Vulnerability: OverlayFSNamed Vulnerability: GameOver(lay)Known Exploited Vulnerability (KEV)
Base Score: 6.8
Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C
Severity: Medium
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: High
EPSS: 0.57628