CVE-2016-0723

NameCVE-2016-0723
DescriptionRace 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-412-1, DSA-3448-1
NVD severitymedium (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)wheezy3.2.78-1fixed
wheezy (security)3.2.93-1fixed
jessie3.16.43-2+deb8u2fixed
jessie (security)3.16.43-2+deb8u5fixed
stretch4.9.51-1fixed
stretch (security)4.9.30-2+deb9u5fixed
buster, sid4.13.4-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.3.3-6medium
linuxsourcejessie3.16.7-ckt20-1+deb8u3mediumDSA-3448-1
linuxsourcewheezy3.2.73-2+deb7u3medium
linux-2.6source(unstable)(unfixed)medium
linux-2.6sourcesqueeze2.6.32-48squeeze19mediumDLA-412-1

Notes

http://lkml.iu.edu/hypermail/linux/kernel/1511.3/03045.html
https://git.kernel.org/linus/5c17c861a357e9458001f021a7afa7aab9937439 (v4.5-rc2)

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