CVE-2016-1575

Public exploit code

Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.

• Ubuntu 14.04/15.10 - User Namespace Overlayfs Xattr SetGID Privilege Escalation2016-11-22 · local · linux

Impact

The overlayfs implementation in the Linux kernel through 4.5.2 does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.

Affected products

Weakness classification

References

• NVD record
• CVE.org record
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360
• http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1575.html
• http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation/
• http://www.openwall.com/lists/oss-security/2016/02/24/7
• http://www.openwall.com/lists/oss-security/2021/10/18/1
• https://launchpad.net/bugs/1534961
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360
• http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1575.html
• http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation/
• http://www.openwall.com/lists/oss-security/2016/02/24/7
• http://www.openwall.com/lists/oss-security/2021/10/18/1
• https://launchpad.net/bugs/1534961