CVE-2016-8655

Race condition in net/packet/af_packet.c in the Linux kernel through 4.8.12 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging the CAP_NET_RAW capability to change a socket version, related to the packet_set_ring and packet_setsockopt functions.

Score

CVSS 3.1 7.8 High

Status

Modified - secalert@redhat.com

Published

2016-12-08

Last modified

2024-08-06

Weaknesses

CWE-362, CWE-416

Affected products

• Ubuntu Linux (Canonical)
• Linux Kernel (Linux)

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=84ac7260236a49c79eede91617700174c2c19b0c
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00044.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00054.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00055.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00056.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00067.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00070.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00073.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00076.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00077.html
• http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00087.html
• http://packetstormsecurity.com/files/140063/Linux-Kernel-4.4.0-AF_PACKET-Race-Condition-Privilege-Escalation.html
• http://rhn.redhat.com/errata/RHSA-2017-0386.html
• http://rhn.redhat.com/errata/RHSA-2017-0387.html
• http://rhn.redhat.com/errata/RHSA-2017-0402.html
• http://www.openwall.com/lists/oss-security/2016/12/06/1
• http://www.securityfocus.com/bid/94692
• http://www.securitytracker.com/id/1037403
• http://www.securitytracker.com/id/1037968
• http://www.ubuntu.com/usn/USN-3149-1
• http://www.ubuntu.com/usn/USN-3149-2
• http://www.ubuntu.com/usn/USN-3150-1
• http://www.ubuntu.com/usn/USN-3150-2
• http://www.ubuntu.com/usn/USN-3151-1
• http://www.ubuntu.com/usn/USN-3151-2
• http://www.ubuntu.com/usn/USN-3151-3
• http://www.ubuntu.com/usn/USN-3151-4
• http://www.ubuntu.com/usn/USN-3152-1
• http://www.ubuntu.com/usn/USN-3152-2
• https://bugzilla.redhat.com/show_bug.cgi?id=1400019