CVE-2016-5696

NameCVE-2016-5696
Descriptionnet/ipv4/tcp_input.c in the Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for remote attackers to hijack TCP sessions via a blind in-window attack.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-609-1, DSA-3659-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie3.16.56-1+deb8u1fixed
jessie (security)3.16.76-1fixed
stretch4.9.189-3fixed
stretch (security)4.9.189-3+deb9u2fixed
buster4.19.67-2+deb10u1fixed
buster (security)4.19.67-2+deb10u2fixed
bullseye5.2.17-1fixed
sid5.3.9-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.7.2-1
linuxsourcejessie3.16.36-1+deb8u1DSA-3659-1
linuxsourcewheezy3.2.81-2DLA-609-1

Notes

Introduced by: https://github.com/torvalds/linux/commit/282f23c6ee343126156dd41218b22ece96d747e3
Fixed by: https://github.com/torvalds/linux/commit/75ff39ccc1bd5d3c455b6822ab09e533c551f758

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