CVE-2016-1575

Public Exploit

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.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.53%
Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360 patch vendor advisory
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1575.html third party advisory
https://launchpad.net/bugs/1534961 third party advisory
http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation/ third party advisory exploit
http://www.openwall.com/lists/oss-security/2016/02/24/7 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2021/10/18/1 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2016-1575?
CVE-2016-1575 has been scored as a high severity vulnerability.
How to fix CVE-2016-1575?
To fix CVE-2016-1575, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-1575 being actively exploited in the wild?
It is possible that CVE-2016-1575 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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