CVE-2016-0821

Description

The LIST_POISON feature in include/linux/poison.h in the Linux kernel before 4.3, as used in Android 6.0.1 before 2016-03-01, does not properly consider the relationship to the mmap_min_addr value, which makes it easier for attackers to bypass a poison-pointer protection mechanism by triggering the use of an uninitialized list entry, aka Android internal bug 26186802, a different vulnerability than CVE-2015-3636.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.01%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.ubuntu.com/usn/USN-2971-2 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2967-1 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2970-1 third party advisory vendor advisory
https://github.com/torvalds/linux/commit/8a5e5e02fc83aaf67053ab53b359af08c6c49aaf patch third party advisory issue tracking
http://www.openwall.com/lists/oss-security/2015/05/02/6 third party advisory mailing list
http://www.ubuntu.com/usn/USN-2969-1 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2967-2 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2968-1 third party advisory vendor advisory
http://source.android.com/security/bulletin/2016-03-01.html third party advisory
http://www.ubuntu.com/usn/USN-2971-3 third party advisory vendor advisory
http://www.debian.org/security/2016/dsa-3607 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2971-1 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2968-2 third party advisory vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8a5e5e02fc83aaf67053ab53b359af08c6c49aaf patch vendor advisory issue tracking
http://www.securityfocus.com/bid/84260 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2016-0821?
CVE-2016-0821 has been scored as a medium severity vulnerability.
How to fix CVE-2016-0821?
To fix CVE-2016-0821, 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-2016-0821 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-0821 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.