Upstream information

CVE-2016-2070 at MITRE

Description

The tcp_cwnd_reduction function in net/ipv4/tcp_input.c in the Linux kernel before 4.3.5 allows remote attackers to cause a denial of service (divide-by-zero error and system crash) via crafted TCP traffic.

SUSE information

Overall state of this security issue: Does not affect SUSE products

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database SUSE
Base Score 7.8 5.4
Vector AV:N/AC:L/Au:N/C:N/I:N/A:C AV:N/AC:H/Au:N/C:N/I:N/A:C
Access Vector Network Network
Access Complexity Low High
Authentication None None
Confidentiality Impact None None
Integrity Impact None None
Availability Impact Complete Complete
CVSS v3 Scores
  National Vulnerability Database
Base Score 7.5
Vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access Vector Network
Access Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High

Note from the SUSE Security Team

This bug only exists in Linux 4.3, so older kernels are not affected. SUSE Linux Enterprise 12 and older are not affected.

SUSE Bugzilla entry: 963761 [RESOLVED / INVALID]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Product(s) Source package State
SUSE Linux Enterprise Desktop 11 SP2 kernel-source Not affected
SUSE Linux Enterprise Desktop 11 SP3 kernel-source Not affected
SUSE Linux Enterprise Desktop 11 SP4 kernel-source Not affected
SUSE Linux Enterprise Desktop 12 GA kernel-source Not affected
SUSE Linux Enterprise Desktop 12 SP1 kernel-source Unsupported
SUSE Linux Enterprise Server 11 SP2 kernel-source Not affected
SUSE Linux Enterprise Server 11 SP2 LTSS kernel-source Not affected
SUSE Linux Enterprise Server 11 SP3 kernel-source Not affected
SUSE Linux Enterprise Server 11 SP4 kernel-source Not affected
SUSE Linux Enterprise Server 12 GA kernel-source Not affected
SUSE Linux Enterprise Server 12 SP1 kernel-source Unsupported
SUSE Linux Enterprise Server for VMWare 11 SP2 kernel-source Not affected
SUSE Linux Enterprise Server for VMWare 11 SP3 kernel-source Not affected