CVE-2021-3847

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.

• CWE-281
• CWE-281

• https://bugzilla.redhat.com/show_bug.cgi?id=2009704Issue Tracking, Third Party Advisory
• https://www.openwall.com/lists/oss-security/2021/10/14/3Mailing List, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2009704Issue Tracking, Third Party Advisory
• https://www.openwall.com/lists/oss-security/2021/10/14/3Mailing List, Third Party Advisory

Published

Apr 1, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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• CVE-2021-38464InHand Networks IR615 Router's Versions 2.3.0.r4724 and 2.3.…7.4
• CVE-2021-38465The webinstaller is a Golang web server executable that enab…6.5
• CVE-2021-38466InHand Networks IR615 Router's Versions 2.3.0.r4724 and 2.3.…6.1
• CVE-2021-38467A specific function code receives a raw pointer supplied by …8.1
• CVE-2021-38468InHand Networks IR615 Router's Versions 2.3.0.r4724 and 2.3.…4.8
• CVE-2021-38469Many of the services used by the affected product do not spe…7.1
• CVE-2021-38470InHand Networks IR615 Router's Versions 2.3.0.r4724 and 2.3.…9.1
• CVE-2021-38471There are multiple API function codes that permit data writi…9.1
• CVE-2021-38472InHand Networks IR615 Router's Versions 2.3.0.r4724 and 2.3.…4.7
• CVE-2021-38473The affected product’s code base doesn’t properly control ar…8.8
• CVE-2021-38474InHand Networks IR615 Router's Versions 2.3.0.r4724 and 2.3.…9.8
• CVE-2021-38475The database connection to the server is performed by callin…8.8