|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.|
|Source||CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)|
Vulnerable and fixed packages
The table below lists information on source packages.
|bullseye (security), bullseye||2.36.1-8+deb11u1||fixed|
The information below is based on the following data on fixed versions.
[buster] - util-linux <not-affected> (Vulnerable code introduced later)
[stretch] - util-linux <not-affected> (Vulnerable code introduced later)
Introduced by: https://github.com/util-linux/util-linux/commit/5fea669e9ef0a08804f72bb40f859f239f68c30a (v2.34-rc1)
Fixed by: https://github.com/util-linux/util-linux/commit/018a10907fa9885093f6d87401556932c2d8bd2b (v2.37.3)