CVE-2016-9793

NameCVE-2016-9793
DescriptionThe sock_setsockopt function in net/core/sock.c in the Linux kernel before 4.8.14 mishandles negative values of sk_sndbuf and sk_rcvbuf, which allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability for a crafted setsockopt system call with the (1) SO_SNDBUFFORCE or (2) SO_RCVBUFFORCE option.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-772-1
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)3.2.89-2fixed
jessie3.16.43-2fixed
jessie (security)3.16.43-2+deb8u2fixed
stretch4.9.30-2fixed
stretch (security)4.9.30-2+deb9u2fixed
buster4.11.6-1fixed
sid4.11.11-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.8.15-1high
linuxsourcejessie3.16.39-1high
linuxsourcewheezy3.2.84-1highDLA-772-1

Notes

Fixed by: https://git.kernel.org/linus/b98b0bc8c431e3ceb4b26b0dfc8db509518fb290

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