CVE-2017-2636

NameCVE-2017-2636
DescriptionRace condition in drivers/tty/n_hdlc.c in the Linux kernel through 4.10.1 allows local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-849-1, DSA-3804-1
NVD severityhigh (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)wheezy3.2.78-1vulnerable
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
buster4.13.4-2fixed
sid4.13.13-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.9.16-1high
linuxsourcejessie3.16.39-1+deb8u2highDSA-3804-1
linuxsourcewheezy3.2.86-1highDLA-849-1

Notes

http://www.openwall.com/lists/oss-security/2017/03/07/6
Fixed by: https://git.kernel.org/linus/82f2341c94d270421f383641b7cd670e474db56b (v4.11-rc2)
https://a13xp0p0v.github.io/2017/03/24/CVE-2017-2636.html

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