CVE-2015-3636

MEDIUM

Description

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

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a134f083e79fb4c3d0a925691e732c56911b4326

http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157788.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157897.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158804.html

http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html

http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00011.html

http://rhn.redhat.com/errata/RHSA-2015-1221.html

http://rhn.redhat.com/errata/RHSA-2015-1534.html

http://rhn.redhat.com/errata/RHSA-2015-1564.html

http://rhn.redhat.com/errata/RHSA-2015-1583.html

http://rhn.redhat.com/errata/RHSA-2015-1643.html

http://www.debian.org/security/2015/dsa-3290

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.3

http://www.openwall.com/lists/oss-security/2015/05/02/5

http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html

http://www.securityfocus.com/bid/74450

http://www.securitytracker.com/id/1033186

http://www.ubuntu.com/usn/USN-2631-1

http://www.ubuntu.com/usn/USN-2632-1

http://www.ubuntu.com/usn/USN-2633-1

http://www.ubuntu.com/usn/USN-2634-1

https://bugzilla.redhat.com/show_bug.cgi?id=1218074

https://github.com/torvalds/linux/commit/a134f083e79fb4c3d0a925691e732c56911b4326

Details

Source: MITRE

Published: 2015-08-06

Updated: 2019-04-22

Risk Information

CVSS v2.0

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM