Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.5.2 |
| Canonical | Ubuntu Core | 15.04 |
| Canonical | Ubuntu Linux | 12.04 |
| Canonical | Ubuntu Touch | 15.04 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ePatchVendor Advisory
- http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1575.htmlThird Party Advisory
- http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEExploitThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/02/24/7Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/18/1Mailing ListThird Party Advisory
- https://launchpad.net/bugs/1534961Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ePatchVendor Advisory
- http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1575.htmlThird Party Advisory
- http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEExploitThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/02/24/7Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/18/1Mailing ListThird Party Advisory
- https://launchpad.net/bugs/1534961Third Party Advisory
FAQ
What is CVE-2016-1575?
CVE-2016-1575 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 direct...
How severe is CVE-2016-1575?
CVE-2016-1575 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-1575?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Core, Canonical Ubuntu Linux, Canonical Ubuntu Touch.