util-linux libmount Privilege Escalation via Failed Mount Helper
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.5epss 0.2%
probabilidad de explotación
0.2%top 93% de las CVE
explotación observada
noninguna fuente lo reporta
util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks, allowing unprivileged users to execute privileged operations on pre-existing filesystems. Attackers can exploit X-mount.idmap or X-mount.owner hooks to clone filesystems with inherited suid bits or modify target inode permissions after a helper fails, achieving privilege escalation.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Productos afectados
util-linux · util-linuxReferencias
https://github.com/util-linux/util-linuxhttps://github.com/util-linux/util-linux/blob/v2.42.2/libmount/src/context_mount.c#L476https://github.com/util-linux/util-linux/blob/v2.42.2/libmount/src/context_mount.c#L892https://github.com/util-linux/util-linux/commit/1d14676ea70003e9f5b2a6a76af0cadb1190411ahttps://github.com/util-linux/util-linux/commit/a15c00a9e545aa8b9cf6ec0f888ff6c7b3eaeedchttps://github.com/util-linux/util-linux/commit/f57cea130839c0af8dc0525274267ae4cfd66bbfhttps://github.com/util-linux/util-linux/security/advisories/GHSA-m25x-3hj9-m26fhttps://www.vulncheck.com/advisories/util-linux-libmount-privilege-escalation-via-failed-mount-helper