Security bugs in libmount, CVE-2021-3996 and CVE-2021-3995.. --------------------------------------------------------------------------------Fedora Update Notification FEDORA-2022-9d02441b24 2022-02-05 01:21:20.735990 --------------------------------------------------------------------------------Name : util-linux Product : Fedora 35 Version : 2.37.3 Release : 1.fc35 URL : https://en.wikipedia.org/wiki/Util-linux Summary : Collection of basic system utilities Description : The util-linux package contains a large variety of low-level system utilities that are necessary for a Linux system to function. Among others, Util-linux contains the fdisk configuration tool and the login program. --------------------------------------------------------------------------------Update Information: Security bugs in libmount, CVE-2021-3996 and CVE-2021-3995. --------------------------------------------------------------------------------ChangeLog: * Mon Jan 24 2022 Karel Zak - 2.37.3-1 * upgrade to v2.37.3 --------------------------------------------------------------------------------References: [ 1 ] Bug #2024628 - CVE-2021-3996 util-linux: Unauthorized unmount of filesystems in libmount https://bugzilla.redhat.com/show_bug.cgi?id=2024628 [ 2 ] Bug #2024631 - CVE-2021-3995 util-linux: Unauthorized unmount of FUSE filesystems belonging to users with similar uid https://bugzilla.redhat.com/show_bug.cgi?id=2024631 --------------------------------------------------------------------------------This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2022-9d02441b24' at the command line. For more information, refer to the dnf documentation available at https://dnf.readthedocs.io/en/latest/command_ref.html All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be foundat https://fedoraproject.org/security/ --------------------------------------------------------------------------------_______________________________________________ package-announce mailing list --
The Qualys Research Labs discovered two vulnerabilities in util-linux's libmount. These flaws allow an unprivileged user to unmount other users' filesystems that are either world-writable themselves or mounted in a world-writable directory (CVE-2021-3996), or to unmount FUSE filesystems . - ------------------------------------------------------------------------- Debian Security Advisory DSA-5055-1
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