PT-2016-5200 · Linux+3 · Linux Kernel+3

Dmitry Vyukov · Published 2016-01-13 · Updated 2017-09-07 · CVE-2016-2548

Positive Technologies (AI Summary)

CVSS v3.1

6.2

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.4.1

Description The issue allows local users to cause a denial of service, resulting in a system crash, via a crafted ioctl call. This is related to the snd timer close and snd timer stop functions in the sound/core/timer.c file.

Recommendations For Linux kernel versions prior to 4.4.1, update to version 4.4.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the ioctl call related to the snd timer close and snd timer stop functions to minimize the risk of exploitation.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

ALT-PU-2016-1018

ALT-PU-2016-1485

CVE-2016-2548

DSA-3503-1

OPENSUSE-SU-2016_2144-1

SUSE-SU-2016:0911-1

SUSE-SU-2016:1102-1

SUSE-SU-2016:1203-1

SUSE-SU-2016:2074-1

USN-2929-1

USN-2929-2

USN-2930-1

USN-2930-2

USN-2930-3

USN-2931-1

USN-2932-1

USN-2967-1

USN-2967-2

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 251

• https://github.com/torvalds/linux/commit/b5a663aa426f4884c71cd8580adae73f33570f0d · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-2548 · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-8767 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-2546 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-2069 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3503-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-2929-1 · Vendor Advisory
• http://ubuntu.com/usn/USN-2930-1 · Vendor Advisory
• http://ubuntu.com/usn/USN-2967-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2930-2 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2016:2074-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-2544 · Vendor Advisory
• http://ubuntu.com/usn/USN-2929-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2967-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2018-4134.html · Vendor Advisory