PT-2016-1597 · Linux+2 · Linux Kernel+2

Zach Riggle · Published 2015-11-18 · Updated 2022-01-31 · CVE-2016-0821

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.3

Description The issue is related to errors in handling the mmap min addr variable in the LIST POISON function of the Linux kernel. This can allow a remote attacker to bypass a protection mechanism by triggering the use of an uninitialized list entry.

Recommendations For Linux kernel versions prior to 4.3, update to version 4.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the mmap min addr variable to minimize the risk of exploitation.

Fix

Use of Uninitialized Resource

Weakness Enumeration

CWE-254

CWE-908

Related Identifiers

ALT-PU-2015-2010

ALT-PU-2016-1485

BDU:2016-00898

CVE-2016-0821

DLA-516-1

DSA-3607-1

USN-2967-1

USN-2967-2

USN-2968-1

USN-2968-2

USN-2969-1

USN-2970-1

USN-2971-1

USN-2971-2

USN-2971-3

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 51

• https://github.com/torvalds/linux/commit/8a5e5e02fc83aaf67053ab53b359af08c6c49aaf · Patch
• https://ubuntu.com/security/CVE-2016-2188 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2971-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2967-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2970-1 · Vendor Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8a5e5e02fc83aaf67053ab53b359af08c6c49aaf · Vendor Advisory
• https://bdu.fstec.ru/vul/2016-00898 · Security Note
• http://ubuntu.com/usn/USN-2970-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-3156 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2968-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-0774 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-3137 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-0821 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-0821 · Security Note
• https://osv.dev/vulnerability/CVE-2016-0821 · Vendor Advisory