https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-28T13:09:01.260082+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/bell-cve-2026-78409 BELL-CVE-2026-78409 2026-09-28T13:09:02.590655+00:00

Affected: Alpaquita:stream: util-linux, BellSoft Hardened Containers:stream: util-linux

 https://vulnerability.circl.lu/vuln/fkie_cve-2026-78409 fkie_cve-2026-78409 2026-09-28T13:09:02.590756+00:00

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to open_tree() with AT_SYMLINK_NOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with an fstab-authorized X-mount.subdir entry can attach a host path at the intended mountpoint.

 https://vulnerability.circl.lu/vuln/opensuse-su-2026:11870-1 openSUSE-SU-2026:11870-1 — libblkid-devel-2.42.3-1.1 on GA media 2026-09-28T13:09:02.590810+00:00

libblkid-devel-2.42.3-1.1 on GA media

 https://vulnerability.circl.lu/vuln/rhsa-2026:63162 RHSA-2026:63162 — Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update 2026-09-28T13:09:02.590851+00:00

util-linux: util-linux: failed external mount helper still runs privileged X-mount post-hooks util-linux: util-linux: nsenter --join-cgroup leaks root cgroup migration authority util-linux: util-linux: X-mount.subdir detached-tree resolution can escape via intermediate symlinks util-linux: util-linux: restricted bind mounts do not pin the source, allowing X-mount.owner/group/mode redirection

 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-78409 UBUNTU-CVE-2026-78409 2026-09-28T13:09:02.590895+00:00

Affected: Ubuntu:14.04:LTS: util-linux, Ubuntu:Pro:16.04:LTS: util-linux, Ubuntu:18.04:LTS: util-linux, Ubuntu:Pro:20.04:LTS: util-linux, Ubuntu:22.04:LTS: util-linux, Ubuntu:24.04:LTS: util-linux, Ubuntu:26.04:LTS: util-linux

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to open_tree() with AT_SYMLINK_NOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with an fstab-authorized X-mount.subdir entry can attach a host path at the intended mountpoint.