PT-2016-4999 · Linux+1 · Linux Kernel+1

Oleksandr Natalenko · Published 2016-01-13 · Updated 2023-01-18 · CVE-2016-2070

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.3.5

Description The issue allows remote attackers to cause a denial of service, resulting in a divide-by-zero error and system crash, via crafted TCP traffic. This is due to a problem in the tcp cwnd reduction function in net/ipv4/tcp input.c.

Recommendations For Linux kernel versions prior to 4.3.5, update to version 4.3.5 or later to resolve the issue. As a temporary workaround, consider restricting incoming TCP traffic to minimize the risk of exploitation.

Fix

DoS

Weakness Enumeration

CWE-189

Related Identifiers

ALT-PU-2016-1018

CVE-2016-2070

Affected Products

Alt Linux

Linux Kernel

References · 15

• https://github.com/torvalds/linux/commit/8b8a321ff72c785ed5e8b4cf6eda20b35d427390 · Vendor Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8b8a321ff72c785ed5e8b4cf6eda20b35d427390 · Vendor Advisory
• http://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-2070 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2016-2070 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-2070 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2016-2070 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-2070 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-2070 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-2070 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1302219 · Note
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8b8a321ff72c785ed5e8b4cf6eda20b35d427390 · Note
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3759824da87b30ce7a35b4873b62b0ba38905ef5 · Note
• https://t.me/cvenotify/42200 · Telegram Post
• http://openwall.com/lists/oss-security/2016/01/25/5 · Note