CVE-2021-3847

EPSS 0.5%CWE-281

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

01 Apr 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

An unauthorized access to the execution of the setuid file with capabilities flaw in the Linux kernel OverlayFS subsystem was found in the way user copying a capable file from a nosuid mount into another mount. A local user could use this flaw to escalate their privileges on the system.

Affected products

n/a · kernel

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References

https://bugzilla.redhat.com/show_bug.cgi?id=2009704 https://www.openwall.com/lists/oss-security/2021/10/14/3