CVE-2016-0723

Severity: medium (CVSS 6.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-02-08 · updated 2026-06-17
Weakness: CWE-200

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.

Affected products

Linux kernel: through 4.4.1

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

Get alerted when CVE-2016-0723 or the next vulnerability affects your stack