CVE-2026-78410: fallo de gravedad alta en Red Hat Cost Management On-Premise 1
Util-linux: util-linux: restricted bind mounts do not pin the source, allowing x-mount.owner/group/mode redirection
Publicada el · Actualizada el
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21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.8epss 0.2%
A flaw was found in util-linux. Restricted bind mounts take the source path from fstab but do not pin that source before the privileged mount. A local unprivileged user who can replace the authorized source or a writable ancestor can redirect SUID mount(8) to bind another host directory. If the fstab entry also sets X-mount.owner, X-mount.group, or X-mount.mode, root then changes ownership or mode on that redirected inode.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Productos afectados
Red Hat · Red Hat Cost Management On-Premise 1Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Hardened ImagesRed Hat · Red Hat OpenShift Container Platform 4Red Hat · Red Hat OpenShift Container Platform 5CVEs relacionadas — Red Hat Cost Management On-Premise 1
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Referencias
https://access.redhat.com/errata/RHSA-2026:63162https://access.redhat.com/errata/RHSA-2026:93461https://access.redhat.com/errata/RHSA-2026:95365https://access.redhat.com/security/cve/CVE-2026-78410https://bugzilla.redhat.com/show_bug.cgi?id=2522684https://github.com/util-linux/util-linux/security/advisories/GHSA-rh77-686x-2f2m