Description
The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 4.6.2-2 | — |
| Debian 13 | linux | 4.6.2-2 | — |
| Debian 12 | linux | 4.6.2-2 | — |
| Debian 8 | linux | 3.16.7-ckt25-2+deb8u2 | DSA-3607-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux | 4.4.0-28.47 | USN-3016-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1016.22 | USN-3016-2 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1019.22 | USN-3016-3 |
| Ubuntu 14.04 LTS | linux | 3.13.0-91.138 | USN-3018-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-76.98~14.04.1 | USN-3019-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-64.72~14.04.1 | USN-3020-1 |
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-41.48~14.04.1 | USN-3017-3 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-28.47~14.04.1 | USN-3016-4 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-327.36.1.rt56.237.el7 | RHSA-2016:1875 |
| RHEL 7 | perf +18 | 3.10.0-327.36.1.el7 | RHSA-2016:1847 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-327.rt56.197.el6rt | RHSA-2016:1883 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | kernel-docs | 3.12.59-60.45.4 | SUSE-SU-2016:2105-1, SUSE-SU-2016:1709-1 |
| SLES 12 SP1 | kernel-obs-build | 3.12.59-60.45.3 | SUSE-SU-2016:2105-1, SUSE-SU-2016:1709-1 |
| SLES 12 SP1 | kernel-syms +1 | 3.12.59-60.45.1 | SUSE-SU-2016:2105-1, SUSE-SU-2016:1709-1 |
| SLES 12 SP1 | kernel-xen +1 | 3.12.59-60.45.2 | SUSE-SU-2016:2105-1, SUSE-SU-2016:1709-1 |
| SLES 12 | kernel-docs +1 | 3.12.60-52.54.3 | SUSE-SU-2016:1710-1 |
| SLES 12 | kernel-ec2 | 3.12.59-60.45.2 | SUSE-SU-2017:0471-1, SUSE-SU-2016:2105-1, SUSE-SU-2016:1710-1 |
| SLES 12 | kernel-syms +1 | 3.12.60-52.54.1 | SUSE-SU-2017:0471-1, SUSE-SU-2016:1710-1 |
| SLES 12 | kernel-xen +1 | 3.12.60-52.54.2 | SUSE-SU-2017:0471-1, SUSE-SU-2016:1710-1 |
| SLES 12 | kgraft-patch-SLE12_Update_10 | 6-2.1 | SUSE-SU-2016:2632-1 |
| SLES 12 | kgraft-patch-SLE12_Update_11 | 5-2.1 | SUSE-SU-2016:2633-1 |
| SLES 12 | kgraft-patch-SLE12_Update_12 +2 | 3-2.1 | SUSE-SU-2016:2659-1, SUSE-SU-2016:2658-1, SUSE-SU-2016:2655-1 |
| SLES 12 | kgraft-patch-SLE12_Update_19 | 1-2.1 | SUSE-SU-2017:0471-1 |
| SLES 12 | kgraft-patch-SLE12_Update_9 | 6-5.1 | SUSE-SU-2016:2636-1 |
| SLES 11 SP4 | kernel-bigmem | 3.0.101-88.1 | SUSE-SU-2016:2976-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-80.2 | SUSE-SU-2016:2976-1, SUSE-SU-2016:2018-1 |
| SLES 11 SP4 | kernel-ec2 +7 | 3.0.101-80.1 | SUSE-SU-2016:2976-1, SUSE-SU-2016:2018-1 |
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.86.1 | SUSE-SU-2016:2245-1 |
| SLES 11 SP2 | kernel-ec2 +6 | 3.0.101-0.7.53.1 | SUSE-SU-2017:0333-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | kernel-syms +1 | 3.12.59-60.45.1 | SUSE-SU-2016:2105-1, SUSE-SU-2016:1709-1 |
| SLES for SAP 12 SP1 | kernel-xen +1 | 3.12.59-60.45.2 | SUSE-SU-2016:2105-1, SUSE-SU-2016:1709-1 |
| SLES for SAP 12 | kernel-syms +1 | 3.12.60-52.54.1 | SUSE-SU-2017:0471-1, SUSE-SU-2016:1710-1 |
| SLES for SAP 12 | kernel-xen +1 | 3.12.60-52.54.2 | SUSE-SU-2017:0471-1, SUSE-SU-2016:1710-1 |
| SLES for SAP 12 | kgraft-patch-SLE12_Update_10 | 6-2.1 | SUSE-SU-2016:2632-1 |
| SLES for SAP 12 | kgraft-patch-SLE12_Update_11 | 5-2.1 | SUSE-SU-2016:2633-1 |
| SLES for SAP 12 | kgraft-patch-SLE12_Update_12 +2 | 3-2.1 | SUSE-SU-2016:2659-1, SUSE-SU-2016:2658-1, SUSE-SU-2016:2655-1 |
| SLES for SAP 12 | kgraft-patch-SLE12_Update_19 | 1-2.1 | SUSE-SU-2017:0471-1 |
| SLES for SAP 12 | kgraft-patch-SLE12_Update_9 | 6-5.1 | SUSE-SU-2016:2636-1 |
| SLES for SAP 11 SP4 | kernel-bigmem | 3.0.101-88.1 | SUSE-SU-2016:2976-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +7 | 3.0.101-80.1 | SUSE-SU-2016:2976-1, SUSE-SU-2016:2018-1 |
| SLE Real Time 12 SP2 | kernel-rt +3 | 4.4.74-7.10.1 | SUSE-SU-2017:1990-1 |
| SLE Real Time 12 SP1 | kernel-rt +5 | 3.12.61-60.18.1 | SUSE-SU-2016:3304-1, SUSE-SU-2016:1937-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-57.1 | SUSE-SU-2017:2342-1, SUSE-SU-2016:3069-1, SUSE-SU-2016:1985-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_0 | 6-17.2 | SUSE-SU-2016:2174-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_1 | 6-2.1 | SUSE-SU-2016:2181-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_2 | 5-2.1 | SUSE-SU-2016:2179-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_3 | 4-2.1 | SUSE-SU-2016:2178-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_4 +1 | 3-2.1 | SUSE-SU-2016:2180-1, SUSE-SU-2016:2177-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_7 | 1-4.2 | SUSE-SU-2016:2105-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_15 +1 | 1-2.3 | SUSE-SU-2016:1710-1, SUSE-SU-2016:1709-1 |
| SUSE OpenStack Cloud 5 | kernel-ec2 +6 | 3.0.101-0.47.86.1 | SUSE-SU-2016:2245-1 |
| SUSE Manager Proxy 2.1 | kernel-ec2 +6 | 3.0.101-0.47.86.1 | SUSE-SU-2016:2245-1 |
| SUSE Manager 2.1 | kernel-ec2 +6 | 3.0.101-0.47.86.1 | SUSE-SU-2016:2245-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.86.1 | SUSE-SU-2016:2245-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 4.8.13-1.1 | openSUSE-SU-2024:10128-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.11.2.el6uek | 0.4.5-3.el6 | ELSA-2016-3617 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.11.2.el7uek | 0.4.5-3.el7 | ELSA-2016-3617 |
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.10.el6uek | 0.5.3-2.el6 | ELSA-2016-3619 |
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.10.el7uek | 0.5.3-2.el7 | ELSA-2016-3619 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.11.2.el7uek | ELSA-2016-3619, ELSA-2016-3617 |
| Oracle Linux 7 | perf +11 | 3.10.0-327.36.1.el7 | ELSA-2016-1847 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
-
Linux Kernel 4.6.3 Netfilter Privilege Escalation
exploit/linux/local/netfilter_priv_esc_ipv4
Exploit-DB 2
- Linux Kernel 4.6.2 (Ubuntu 16.04.1) - 'IP6T_SO_SET_REPLACE' Local Privilege Escalation EDB-40489 · local · Oct 10, 2016
- Linux Kernel 4.6.3 (x86) - 'Netfilter' Local Privilege Escalation (Metasploit) EDB-40435 · local · Sep 27, 2016 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 43
- RHSA-2016:1883 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:1875 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:1847 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3016-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3018-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3607-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3019-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3020-1 linux-lts-vivid vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3016-2 linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3016-3 linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3016-4 linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3017-3 linux-lts-wily vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2016:2976-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2179-1 Security update for Linux Kernel Live Patch 2 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2180-1 Security update for Linux Kernel Live Patch 4 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1937-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2633-1 Security update for Linux Kernel Live Patch 11 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2658-1 Security update for Linux Kernel Live Patch 14 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10128-1 kernel-debug-4.8.13-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2659-1 Security update for Linux Kernel Live Patch 13 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0471-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2636-1 Security update for Linux Kernel Live Patch 9 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1710-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:3069-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2174-1 Security update for Linux Kernel Live Patch 0 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1709-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2177-1 Security update for Linux Kernel Live Patch 5 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2018-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0333-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2105-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2632-1 Security update for Linux Kernel Live Patch 10 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2655-1 Security update for Linux Kernel Live Patch 12 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2178-1 Security update for Linux Kernel Live Patch 3 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1985-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2181-1 Security update for Linux Kernel Live Patch 1 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:3304-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1990-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2017:2342-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2016:2245-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-0144 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 17, 2024
- ELSA-2016-3619 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 22, 2016
- ELSA-2016-3617 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 22, 2016
- ELSA-2016-1847 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 14, 2016
References
- SUSE-SU-2016:2180 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- SUSE-SU-2016:1709 vendor-advisory
- USN-3017-1 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
- SUSE-SU-2016:1985 vendor-advisory
- USN-3017-3 vendor-advisory
- RHSA-2016:1847 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1349722
- openSUSE-SU-2016:2184 vendor-advisory
- USN-3018-2 vendor-advisory
- SUSE-SU-2016:2174 vendor-advisory
- USN-3017-2 vendor-advisory
- RHSA-2016:1875 vendor-advisory
- USN-3019-1 vendor-advisory
- SUSE-SU-2016:2018 vendor-advisory
- DSA-3607 vendor-advisory
- USN-3016-2 vendor-advisory
- USN-3016-1 vendor-advisory
- [oss-security] 20160624 Linux CVE-2016-4997 (local privilege escalation) and CVE-2016-4998 (out of bounds memory access) mailing-list
- SUSE-SU-2016:2181 vendor-advisory
- SUSE-SU-2016:2178 vendor-advisory
- 40435 exploit
- https://github.com/torvalds/linux/commit/ce683e5f9d045e5d67d1312a42b359cb2ab2a13c
- USN-3018-1 vendor-advisory
- 1036171 vdb-entry
- 40489 exploit
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05347541
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
- SUSE-SU-2016:2177 vendor-advisory
- RHSA-2016:1883 vendor-advisory
- SUSE-SU-2016:2179 vendor-advisory
- SUSE-SU-2016:2105 vendor-advisory
- USN-3016-3 vendor-advisory
- SUSE-SU-2016:1710 vendor-advisory
- [oss-security] 20160929 CVE request - Linux kernel through 4.6.2 allows escalade privileges via IP6T_SO_SET_REPLACE compat setsockopt call mailing-list
- USN-3016-4 vendor-advisory
- 91451 vdb-entry
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce683e5f9d045e5d67d1312a42b359cb2ab2a13c
- USN-3020-1 vendor-advisory
- https://github.com/nccgroup/TriforceLinuxSyscallFuzzer/tree/master/crash_reports/report_compatIpt
- SUSE-SU-2016:1937 vendor-advisory