{"id":"ALSA-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  * util-linux: util-linux: heap use-after-free in libblkid nested partition probing (CVE-2026-13595)\n  * util-linux: TOCTOU in the mount program via ancestor directory swap on target path (CVE-2026-53613)\n  * util-linux: util-linux: TOCTOU in the mount program when applying post-mount ownership/mode changes (CVE-2026-53612)\n  * util-linux: util-linux: SUID mount(8) allows nosuid/noexec bypass via LIBMOUNT_FORCE_MOUNT2 (CVE-2026-53614)\n  * util-linux: util-linux: failed external mount helper still runs privileged X-mount post-hooks (CVE-2026-76642)\n  * util-linux: util-linux: nsenter --join-cgroup leaks root cgroup migration authority (CVE-2026-78408)\n  * util-linux: util-linux: restricted bind mounts do not pin the source, allowing X-mount.owner/group/mode redirection (CVE-2026-78410)\n  * util-linux: util-linux: Partition metadata compromise via integer overflow in DOS partition parser (CVE-2026-53615)\n\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.\n","modified":"2026-11-02T10:30:02.100888253Z","published":"2026-11-02T00:00:00Z","related":["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"],"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"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:93461"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-13595"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-27456"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53612"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53613"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53614"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53615"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-76642"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-78408"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-78410"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2454956"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2494101"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2519646"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2519647"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2519648"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2521999"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2522497"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2522684"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2552551"},{"type":"ADVISORY","url":"https://errata.almalinux.org/10/ALSA-2026-93461.html"}],"affected":[{"package":{"name":"libblkid","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libblkid"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.40.2-18.el10_2.20"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:93461.json"}},{"package":{"name":"libblkid-devel","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libblkid-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.40.2-18.el10_2.20"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:93461.json"}},{"package":{"name":"libfdisk","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libfdisk"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.40.2-18.el10_2.20"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:93461.json"}},{"package":{"name":"libfdisk-devel","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libfdisk-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.40.2-18.el10_2.20"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:93461.json"}},{"package":{"name":"libmount","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libmount"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.40.2-18.el10_2.20"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:93461.json"}},{"package":{"name":"libmount-devel","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libmount-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.40.2-18.el10_2.20"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:93461.json"}},{"package":{"name":"libsmartcols","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libsmartcols"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.40.2-18.el10_2.20"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:93461.json"}},{"package":{"name":"libsmartcols-devel","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libsmartcols-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.40.2-18.el10_2.20"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:93461.json"}},{"package":{"name":"libuuid","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libuuid"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.40.2-18.el10_2.20"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:93461.json"}},{"package":{"name":"libuuid-devel","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libuuid-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"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