Description

The pn_recvmsg function in net/phonet/datagram.c in the Linux kernel before 3.12.4 updates a certain length value before ensuring that an associated data structure has been initialized, which allows local users to obtain sensitive information from kernel stack memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bceaa90240b6019ed73b49965eac7d167610be69

http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00026.html

http://rhn.redhat.com/errata/RHSA-2014-0159.html

http://seclists.org/oss-sec/2014/q1/29

http://secunia.com/advisories/55882

http://secunia.com/advisories/56036

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.4

http://www.openwall.com/lists/oss-security/2013/11/28/13

http://www.ubuntu.com/usn/USN-2107-1

http://www.ubuntu.com/usn/USN-2108-1

http://www.ubuntu.com/usn/USN-2109-1

http://www.ubuntu.com/usn/USN-2110-1

http://www.ubuntu.com/usn/USN-2113-1

http://www.ubuntu.com/usn/USN-2117-1

http://www.ubuntu.com/usn/USN-2135-1

http://www.ubuntu.com/usn/USN-2136-1

http://www.ubuntu.com/usn/USN-2138-1

http://www.ubuntu.com/usn/USN-2139-1

http://www.ubuntu.com/usn/USN-2141-1

https://bugzilla.redhat.com/show_bug.cgi?id=1035875

https://github.com/torvalds/linux/commit/bceaa90240b6019ed73b49965eac7d167610be69

Details

Risk Information

CVSS v2