CVE-2021-3732

EPSS 0.3%CWE-200

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

07 Mar 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible.

Affected products

n/a · kernel

References

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