PT-2016-4389 · Linux+4 · Linux Kernel+4

Adam Mariš · Published 2016-01-19 · Updated 2024-06-15 · CVE-2016-0723

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

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

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

Description A race condition in the tty ioctl function in drivers/tty/tty io.c may allow local users to obtain sensitive information from kernel memory or cause a denial of service, such as a use-after-free condition and system crash, by making a TIOCGETD ioctl call during processing of a TIOCSETD ioctl call.

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 tty ioctl function to minimize the risk of exploitation.

Fix

DoS

Race Condition

Information Disclosure

Weakness Enumeration

CWE-362

CWE-200

Related Identifiers

ALT-PU-2016-1137

ALT-PU-2016-1485

CVE-2016-0723

DLA-412-1

DSA-3448-1

DSA-3503-1

OPENSUSE-SU-2016_0537-1

OPENSUSE-SU-2016_1008-1

OPENSUSE-SU-2024:10128-1

SUSE-SU-2016:0585-1

SUSE-SU-2016:0785-1

SUSE-SU-2016:0911-1

SUSE-SU-2016:1102-1

SUSE-SU-2016:1203-1

SUSE-SU-2016:1764-1

SUSE-SU-2016:2074-1

USN-2929-1

USN-2929-2

USN-2930-1

USN-2930-2

USN-2930-3

USN-2932-1

USN-2948-1

USN-2948-2

USN-2967-1

USN-2967-2

Affected Products

Alt Linux

Fortios

Linux Kernel

Suse

Ubuntu

References · 490

• https://osv.dev/vulnerability/UBUNTU-CVE-2016-0723 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-0723 · Security Note
• https://ubuntu.com/security/CVE-2015-8767 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2948-2 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2016:1764-1 · 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