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

CVSS v2 Scores
  National Vulnerability Database
Base Score 7.79
Vector AV:N/AC:L/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact 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.