CVE-2021-3732

Description

A security issue was found in Linux kernel’s OverlayFS subsystem where a local attacker who has the ability to mount the TmpFS filesystem with OverlayFS can abuse a logic bug in the overlayfs code which can inadvertently reveal files hidden in the original mount.

References

https://ubuntu.com/security/CVE-2021-3732

https://bugzilla.redhat.com/show_bug.cgi?id=1995249

https://github.com/torvalds/linux/commit/427215d85e8d1476da1a86b8d67aceb485eb3631

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=427215d85e8d1476da1a86b8d67aceb485eb3631

Details

Risk Information

CVSS v2

CVSS v3