CVE-2017-2671

NameCVE-2017-2671
DescriptionThe ping_unhash function in net/ipv4/ping.c in the Linux kernel through 4.10.8 is too late in obtaining a certain lock and consequently cannot ensure that disconnect function calls are safe, which allows local users to cause a denial of service (panic) by leveraging access to the protocol value of IPPROTO_ICMP in a socket system 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-922-1
NVD severitymedium (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)wheezy3.2.78-1vulnerable
wheezy (security)3.2.89-1fixed
jessie3.16.43-2fixed
jessie (security)3.16.43-2+deb8u1fixed
buster, stretch4.9.30-2fixed
stretch (security)4.9.30-2+deb9u1fixed
sid4.11.6-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.9.25-1medium
linuxsourcejessie3.16.43-1medium
linuxsourcewheezy3.2.88-1mediumDLA-922-1

Notes

http://www.openwall.com/lists/oss-security/2017/03/24/6
Fixed by: https://git.kernel.org/linus/43a6684519ab0a6c52024b5e25322476cabad893

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