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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 11.1%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 11.13% probability · 96th percentile
- Public exploits
- 3 in Exploit-DB · verified · first 6 December 2016
- CISA KEV
- Not listed
- Weakness
- CWE-362, CWE-416
- Affected
- linux/linux kernel · canonical/ubuntu linux
- Source
- secalert@redhat.com
EPSS 11.1% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (3)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
| EDB-ID | Title | Type | Published | Verified |
|---|---|---|---|---|
| EDB-47170source ↗ | Linux Kernel 4.4.0-21 < 4.4.0-51 (Ubuntu 14.04/16.04 x64) - 'AF_PACKET' Race Condition Privilege Escalationwindows_x86-64 · bcoles | local | 29 December 2018 | no |
| EDB-44696source ↗ | Linux 4.4.0 < 4.4.0-53 - 'AF_PACKET chocobo_root' Local Privilege Escalation (Metasploit)linux · Metasploit | local | 22 May 2018 | yes |
| EDB-40871source ↗ | Linux Kernel 4.4.0 (Ubuntu 14.04/16.04 x86-64) - 'AF_PACKET' Race Condition Privilege Escalationlinux_x86-64 · rebel | local | 6 December 2016 | yes |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=84ac7260236a49c79eede91617700174c2c19b0cPatch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00044.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00054.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00055.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00056.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00067.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00070.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00073.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00076.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00077.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00087.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/140063/Linux-Kernel-4.4.0-AF_PACKET-Race-Condition-Privilege-Escalation.htmlThird Party Advisory, VDB Entry
- http://rhn.redhat.com/errata/RHSA-2017-0386.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0387.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0402.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/12/06/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/94692Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037403Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037968Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3149-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3149-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3150-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3150-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3151-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3151-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3151-3Third Party Advisory
- http://www.ubuntu.com/usn/USN-3151-4Third Party Advisory
- http://www.ubuntu.com/usn/USN-3152-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3152-2Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1400019Issue Tracking, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.