DescriptionThe vsock_stream_sendmsg function in net/vmw_vsock/af_vsock.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.
SourceCVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)
NVD severitymedium (attack range: local)
Debian Bugs706557
Debian/oldstablepackage open-vm-tools is vulnerable.
Debian/stablepackage open-vm-tools is vulnerable.
Debian/testingnot vulnerable.
Debian/unstablenot vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)wheezy3.2.65-1fixed
wheezy (security)3.2.65-1+deb7u2fixed
linux-2.6 (PTS)squeeze, squeeze (security)2.6.32-48squeeze6fixed
squeeze (lts)2.6.32-48squeeze11fixed
open-vm-tools (PTS)squeeze/contrib1:8.4.2-261024-1vulnerable
jessie, sid2:9.4.6-1770165-8fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)(not affected)
linux-2.6source(unstable)(not affected)


- linux-2.6 <not-affected> ((net/vmw_vsock/af_vsock.c not present)
- linux <not-affected> (net/vmw_vsock/af_vsock.c not present)
[wheezy] - open-vm-tools <no-dsa> (Minor information leak)
[squeeze] - open-vm-tools <no-dsa> (Contrib not supported, minor information leak)

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