PT-2015-3272 · Linux+5 · Linux Kernel+5

Dmitry Vyukov · Published 2015-12-02 · Updated 2024-04-02 · CVE-2016-3841

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.3.3

Description The issue is related to the IPv6 stack in the Linux kernel, which mishandles options data. This can be exploited by local users to gain privileges or cause a denial of service, resulting in a system crash due to a use-after-free error. The exploitation can occur via a crafted sendmsg system call.

Recommendations For Linux kernel versions prior to 4.3.3, update to version 4.3.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the sendmsg system call to minimize the risk of exploitation.

Fix

DoS

Use After Free

Weakness Enumeration

CWE-264

CWE-416

Related Identifiers

ALT-PU-2015-2110

ALT-PU-2016-1485

BDU:2016-01939

CESA-2016_0855

CESA-2016_2574

CVE-2016-3841

RHSA-2016:0855

RHSA-2016:2574

RHSA-2016:2584

RHSA-2016:2695

RHSA-2016_0855

RHSA-2016_2574

RHSA-2016_2584

SUSE-SU-2016:2976-1

SUSE-SU-2016:3069-1

SUSE-SU-2017:0333-1

SUSE-SU-2017:0494-1

SUSE-SU-2017:1102-1

USN-3083-1

USN-3083-2

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Suse

Ubuntu

References · 335

• https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39 · Patch
• https://ubuntu.com/security/CVE-2015-8767 · Vendor Advisory
• http://source.android.com/security/bulletin/2016-08-01.html · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-3841 · Vendor Advisory
• https://bdu.fstec.ru/vul/2016-01939 · Security Note
• http://rhn.redhat.com/errata/RHSA-2016-0855.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:0494-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-3841 · Security Note
• https://linux.oracle.com/errata/ELSA-2019-4317.html · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-3841 · Vendor Advisory
• http://rhn.redhat.com/errata/RHSA-2016-2584.html · Vendor Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2017:1102-1 · Vendor Advisory
• http://rhn.redhat.com/errata/RHSA-2016-2695.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-3841 · Vendor Advisory