CVE ID:	CVE-2021-3996
Description:	A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows a local user on a vulnerable system to unmount other users' filesystems that are either world-writable themselves (like /tmp) or mounted in a world-writable directory. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-3996 http://seclists.org/fulldisclosure/2022/Dec/4 https://security.gentoo.org/glsa/202401-08 http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html https://access.redhat.com/security/cve/CVE-2021-3996 https://access.redhat.com/security/cve/CVE-2021-3996 https://bugzilla.redhat.com/show_bug.cgi?id=2024628 https://bugzilla.redhat.com/show_bug.cgi?id=2024628 https://github.com/util-linux/util-linux/commit/166e87368ae88bf31112a30e078cceae637f4cdb https://github.com/util-linux/util-linux/commit/166e87368ae88bf31112a30e078cceae637f4cdb https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotes https://www.openwall.com/lists/oss-security/2022/01/24/2 https://www.openwall.com/lists/oss-security/2022/01/24/2 http://www.openwall.com/lists/oss-security/2022/11/30/2