MitreCVELIST:CVE-2015-3636CVE-2015-3636
The ping_unhash function in net/ipv4/ping.c in the Linux kernel before 4.0.3 does not initialize a certain list data structure during an unhash operation, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) by leveraging the ability to make a SOCK_DGRAM socket system call for the IPPROTO_ICMP or IPPROTO_ICMPV6 protocol, and then making a connect system call after a disconnect.
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a134f083e79fb4c3d0a925691e732c56911b4326
lists.fedoraproject.org/pipermail/package-announce/2015-May/157788.html
lists.fedoraproject.org/pipermail/package-announce/2015-May/157897.html
lists.fedoraproject.org/pipermail/package-announce/2015-May/158804.html
lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html
lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html
lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
lists.opensuse.org/opensuse-security-announce/2015-09/msg00007.html
lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html
lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html
lists.opensuse.org/opensuse-security-announce/2015-09/msg00011.html
rhn.redhat.com/errata/RHSA-2015-1221.html
rhn.redhat.com/errata/RHSA-2015-1534.html
rhn.redhat.com/errata/RHSA-2015-1564.html
rhn.redhat.com/errata/RHSA-2015-1583.html
rhn.redhat.com/errata/RHSA-2015-1643.html
www.debian.org/security/2015/dsa-3290
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.3
www.openwall.com/lists/oss-security/2015/05/02/5
www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
www.securityfocus.com/bid/74450
www.securitytracker.com/id/1033186
www.ubuntu.com/usn/USN-2631-1
www.ubuntu.com/usn/USN-2632-1
www.ubuntu.com/usn/USN-2633-1
www.ubuntu.com/usn/USN-2634-1
bugzilla.redhat.com/show_bug.cgi?id=1218074
github.com/torvalds/linux/commit/a134f083e79fb4c3d0a925691e732c56911b4326
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