CVE-2016-0723

MEDIUM

Description

Race condition in the tty_ioctl function in drivers/tty/tty_io.c in the Linux kernel through 4.4.1 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free and system crash) by making a TIOCGETD ioctl call during processing of a TIOCSETD ioctl call.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c17c861a357e9458001f021a7afa7aab9937439

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176464.html

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html

http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html

http://source.android.com/security/bulletin/2016-07-01.html

http://www.debian.org/security/2016/dsa-3448

http://www.debian.org/security/2016/dsa-3503

http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html

http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html

http://www.securityfocus.com/bid/82950

http://www.securitytracker.com/id/1035695

http://www.ubuntu.com/usn/USN-2929-1

http://www.ubuntu.com/usn/USN-2929-2

http://www.ubuntu.com/usn/USN-2930-1

http://www.ubuntu.com/usn/USN-2930-2

http://www.ubuntu.com/usn/USN-2930-3

http://www.ubuntu.com/usn/USN-2932-1

http://www.ubuntu.com/usn/USN-2948-1

http://www.ubuntu.com/usn/USN-2948-2

http://www.ubuntu.com/usn/USN-2967-1

http://www.ubuntu.com/usn/USN-2967-2

https://bugzilla.redhat.com/show_bug.cgi?id=1296253

https://github.com/torvalds/linux/commit/5c17c861a357e9458001f021a7afa7aab9937439

https://security-tracker.debian.org/tracker/CVE-2016-0723

Details

Source: MITRE

Published: 2016-02-08

Updated: 2016-12-06

Type: CWE-362

Risk Information

CVSS v2.0

Base Score: 5.6

Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:C)

Impact Score: 7.8

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Impact Score: 4.2

Exploitability Score: 2.5

Severity: MEDIUM