{"id":"RLSA-2026:93461","summary":"Important: util-linux security update","details":"The util-linux packages contain a large variety of low-level system utilities that are necessary for a Linux system to function. Among others, these include the fdisk configuration tool and the login program.\n\nSecurity Fix(es):\n\n* util-linux: TOCTOU in the mount program when setting up loop devices (CVE-2026-27456)\n\n* util-linux: util-linux: heap use-after-free in libblkid nested partition probing (CVE-2026-13595)\n\n* util-linux: TOCTOU in the mount program via ancestor directory swap on target path (CVE-2026-53613)\n\n* util-linux: util-linux: TOCTOU in the mount program when applying post-mount ownership/mode changes (CVE-2026-53612)\n\n* util-linux: util-linux: SUID mount(8) allows nosuid/noexec bypass via LIBMOUNT_FORCE_MOUNT2 (CVE-2026-53614)\n\n* util-linux: util-linux: failed external mount helper still runs privileged X-mount post-hooks (CVE-2026-76642)\n\n* util-linux: util-linux: nsenter --join-cgroup leaks root cgroup migration authority (CVE-2026-78408)\n\n* util-linux: util-linux: restricted bind mounts do not pin the source, allowing X-mount.owner/group/mode redirection (CVE-2026-78410)\n\n* util-linux: util-linux: Partition metadata compromise via integer overflow in DOS partition parser (CVE-2026-53615)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-11-03T12:30:03.478027736Z","published":"2026-11-03T12:10:03.560067Z","upstream":["CVE-2026-13595","CVE-2026-27456","CVE-2026-53612","CVE-2026-53613","CVE-2026-53614","CVE-2026-53615","CVE-2026-76642","CVE-2026-78408","CVE-2026-78410"],"database_specific":{"license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:93461","license":"CC-BY-4.0"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:93461"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2454956"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2494101"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2519646"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2519647"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2519648"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2521999"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2522497"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2522684"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2552551"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:93461"}],"affected":[{"package":{"name":"util-linux","ecosystem":"Rocky Linux:10","purl":"pkg:rpm/rocky-linux/util-linux?distro=rocky-linux-10&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.40.2-18.el10_2.20"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:93461.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}