Upstream information

CVE-2016-0821 at MITRE

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.

SUSE information

CVSS v2 Scores
  National Vulnerability Database SUSE
Base Score 4.96 4.05
Vector AV:N/AC:L/Au:N/C:N/I:P/A:N AV:L/AC:M/Au:S/C:P/I:P/A:P
Access Vector Network Local
Access Complexity Low Medium
Authentication None Single
Confidentiality Impact None Partial
Integrity Impact Partial Partial
Availability Impact None Partial
CVSS v3 Scores
  National Vulnerability Database
Base Score 7.5
Vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Access Vector Network
Access Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact High
Availability Impact None

Note from the SUSE Security Team

This problem should only affect 32bit kernels, and is a hardening measure and not a direct exploitable issue. We currently do not plan to fix this issue.

SUSE Bugzilla entry: 994624 [RESOLVED / WONTFIX]

No SUSE Security Announcements cross referenced.


List of planned updates

The following information is the current evaluation information for this security issue. It might neither be accurate nor complete, Use at own risk.
Product(s) Source package
  • SUSE Linux Enterprise Server 12 GA
  • SUSE Linux Enterprise Server for SAP 12 GA
  • SUSE Linux Enterprise Server for SAP 12 SP1
kernel-source