Description
The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized, which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command.
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 |
| Debian 7 | linux | 3.2.81-2 | DLA-609-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux | 4.4.0-34.53 | USN-3055-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1019.25 | USN-3056-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1022.25 | USN-3057-1 |
| Ubuntu 14.04 LTS | linux | 3.13.0-93.140 | USN-3052-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-66.74~14.04.1 | USN-3053-1 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-34.53~14.04.1 | USN-3054-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-327.28.2.rt56.234.el7_2 | RHSA-2016:1541 |
| RHEL 7 | perf +18 | 3.10.0-327.28.2.el7 | RHSA-2016:1539 |
| RHEL 6 | perf +16 | 2.6.32-642.6.1.el6 | RHSA-2016:2006 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7.1 EUS | kernel-kdump +4 | 3.10.0-229.40.1.el7 | RHSA-2016:1657 |
| RHEL 7.1 EUS | perf +13 | 3.10.0-229.40.1.ael7b | RHSA-2016:1657 |
| RHEL 6.7 EUS | perf +16 | 2.6.32-573.35.1.el6 | RHSA-2016:2076 |
| RHEL 6.6 EUS | perf +16 | 2.6.32-504.54.1.el6 | RHSA-2016:2128 |
| RHEL 6.5 AUS | perf +10 | 2.6.32-431.74.1.el6 | RHSA-2016:2074 |
| RHEL 6.4 AUS | perf +9 | 2.6.32-358.75.1.el6 | RHSA-2016:2133 |
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-327.rt56.194.el6rt | RHSA-2016:1532 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | kernel-docs | 3.12.62-60.62.3 | SUSE-SU-2016:2105-1 |
| SLES 12 SP1 | kernel-xen +4 | 3.12.62-60.62.1 | SUSE-SU-2016:2105-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.66.1 | SUSE-SU-2017:0471-1, SUSE-SU-2016:2105-1 |
| SLES 12 | kgraft-patch-SLE12_Update_11 | 4-2.2 | SUSE-SU-2016:2010-1 |
| SLES 12 | kgraft-patch-SLE12_Update_12 +2 | 2-2.2 | SUSE-SU-2016:2006-1, SUSE-SU-2016:1999-1, SUSE-SU-2016:1998-1 |
| SLES 12 | kgraft-patch-SLE12_Update_13 | 2-2.3 | SUSE-SU-2016:2001-1 |
| SLES 12 | kgraft-patch-SLE12_Update_19 | 1-2.1 | SUSE-SU-2017:0471-1 |
| SLES 12 | kgraft-patch-SLE12_Update_7 | 6-2.2 | SUSE-SU-2016:2014-1 |
| SLES 12 | kgraft-patch-SLE12_Update_8 +2 | 5-2.2 | SUSE-SU-2016:2005-1, SUSE-SU-2016:2002-1, SUSE-SU-2016:1995-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-80.2 | SUSE-SU-2016:2018-1 |
| SLES 11 SP4 | kernel-ec2 +7 | 3.0.101-80.1 | 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 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.62-60.62.1 | SUSE-SU-2016:2105-1 |
| SLES for SAP 12 | kernel-xen +3 | 3.12.61-52.66.1 | SUSE-SU-2017:0471-1 |
| SLES for SAP 12 | kgraft-patch-SLE12_Update_11 | 4-2.2 | SUSE-SU-2016:2010-1 |
| SLES for SAP 12 | kgraft-patch-SLE12_Update_12 +2 | 2-2.2 | SUSE-SU-2016:2006-1, SUSE-SU-2016:1999-1, SUSE-SU-2016:1998-1 |
| SLES for SAP 12 | kgraft-patch-SLE12_Update_13 | 2-2.3 | SUSE-SU-2016:2001-1 |
| 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_7 | 6-2.2 | SUSE-SU-2016:2014-1 |
| SLES for SAP 12 | kgraft-patch-SLE12_Update_8 +2 | 5-2.2 | SUSE-SU-2016:2005-1, SUSE-SU-2016:2002-1, SUSE-SU-2016:1995-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +7 | 3.0.101-80.1 | SUSE-SU-2016:2018-1 |
| SLE Real Time 12 SP1 | kernel-rt +5 | 3.12.61-60.18.1 | SUSE-SU-2016:1937-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-57.1 | SUSE-SU-2016:1985-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_0 | 5-14.2 | SUSE-SU-2016:1961-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_1 | 5-2.1 | SUSE-SU-2016:1994-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_2 | 4-2.1 | SUSE-SU-2016:2009-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_3 | 3-2.1 | SUSE-SU-2016:2007-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_4 +1 | 2-2.2 | SUSE-SU-2016:2011-1, SUSE-SU-2016:2000-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_5 | 2-2.1 | SUSE-SU-2016:2003-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_7 | 1-4.2 | SUSE-SU-2016:2105-1 |
| 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-3.8.13-118.9.2.el6uek | 0.4.5-3.el6 | ELSA-2016-3591 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.9.2.el7uek | 0.4.5-3.el7 | ELSA-2016-3591 |
| Oracle Linux 7 | dtrace-modules-4.1.12-37.6.2.el6uek | 0.5.2-1.el6 | ELSA-2016-3593 |
| Oracle Linux 7 | dtrace-modules-4.1.12-37.6.2.el7uek | 0.5.2-1.el7 | ELSA-2016-3593 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.9.2.el7uek | ELSA-2016-3593, ELSA-2016-3591 |
| Oracle Linux 7 | perf +11 | 3.10.0-327.28.2.el7 | ELSA-2016-1539 |
Advisories 44
- RHSA-2016:2133 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:2128 Red Hat Security Advisory: kernel security and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:2076 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:2074 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:2006 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:1657 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:1541 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:1532 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:1539 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3055-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3052-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-609-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3607-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3057-1 linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3053-1 linux-lts-vivid vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3054-1 linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3056-1 linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2016:2002-1 Security update for Linux Kernel Live Patch 10 for SLE 12 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-2016:2005-1 Security update for Linux Kernel Live Patch 8 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2011-1 Security update for Linux Kernel Live Patch 6 for SLE 12 SP1 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-2016:2007-1 Security update for Linux Kernel Live Patch 3 for SLE 12 SP1 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-2016:2014-1 Security update for Linux Kernel Live Patch 7 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1961-1 Security update for Linux Kernel Live Patch 0 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2001-1 Security update for Linux Kernel Live Patch 13 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2003-1 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-2016:2000-1 Security update for Linux Kernel Live Patch 4 for SLE 12 SP1 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-2016:1995-1 Security update for Linux Kernel Live Patch 9 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1999-1 Security update for Linux Kernel Live Patch 14 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2010-1 Security update for Linux Kernel Live Patch 11 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1994-1 Security update for Linux Kernel Live Patch 1 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-2016:1998-1 Security update for Linux Kernel Live Patch 15 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2009-1 Security update for Linux Kernel Live Patch 2 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2006-1 Security update for Linux Kernel Live Patch 12 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2245-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2016-3593 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 4, 2016
- ELSA-2016-3591 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 4, 2016
- ELSA-2016-1539 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 2, 2016
References
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- SUSE-SU-2016:2010 vendor-advisory
- SUSE-SU-2016:2011 vendor-advisory
- USN-3054-1 vendor-advisory
- SUSE-SU-2016:2003 vendor-advisory
- RHSA-2016:1657 vendor-advisory
- SUSE-SU-2016:1994 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- USN-3051-1 vendor-advisory
- RHSA-2016:2128 vendor-advisory
- SUSE-SU-2016:1961 vendor-advisory
- RHSA-2016:2133 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
- SUSE-SU-2016:2001 vendor-advisory
- SUSE-SU-2016:1985 vendor-advisory
- USN-3053-1 vendor-advisory
- openSUSE-SU-2016:2184 vendor-advisory
- SUSE-SU-2016:1998 vendor-advisory
- USN-3055-1 vendor-advisory
- SUSE-SU-2016:2006 vendor-advisory
- USN-3056-1 vendor-advisory
- USN-3052-1 vendor-advisory
- USN-3049-1 vendor-advisory
- RHSA-2016:1541 vendor-advisory
- SUSE-SU-2016:2014 vendor-advisory
- SUSE-SU-2016:2018 vendor-advisory
- DSA-3607 vendor-advisory
- RHSA-2016:1539 vendor-advisory
- 1036763 vdb-entry
- RHSA-2016:1532 vendor-advisory
- RHSA-2016:2006 vendor-advisory
- SUSE-SU-2016:2009 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=38327424b40bcebe2de92d07312c89360ac9229a
- [oss-security] 20160615 CVE-2016-4470: Linux kernel Uninitialized variable in request_key handling user controlled kfree(). mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=1341716
- USN-3050-1 vendor-advisory
- SUSE-SU-2016:2005 vendor-advisory
- SUSE-SU-2016:2007 vendor-advisory
- SUSE-SU-2016:1999 vendor-advisory
- SUSE-SU-2016:2000 vendor-advisory
- RHSA-2016:2076 vendor-advisory
- USN-3057-1 vendor-advisory
- SUSE-SU-2016:1995 vendor-advisory
- RHSA-2016:2074 vendor-advisory
- SUSE-SU-2016:2105 vendor-advisory
- SUSE-SU-2016:2002 vendor-advisory
- https://github.com/torvalds/linux/commit/38327424b40bcebe2de92d07312c89360ac9229a
- SUSE-SU-2016:1937 vendor-advisory