Description
The key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 4.2.6 allows local users to cause a denial of service (OOPS) via crafted keyctl commands.
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 | 4.2.5-1 | — |
| Debian 13 | linux | 4.2.5-1 | — |
| Debian 12 | linux | 4.2.5-1 | — |
| Debian 8 | linux | 3.16.7-ckt11-1+deb8u6 | DSA-3396-1 |
| Debian 7 | linux | 3.2.68-1+deb7u6 | DSA-3396-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-riscv +6 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +4 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +3 | No fix yet | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-70.113 | USN-2823-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-55.74~14.04.1 | USN-2824-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-37.42~14.04.1 | USN-2829-2 |
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-21.25~14.04.1 | USN-2843-2 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-327.10.1.rt56.211.el7_2 | RHSA-2016:0212 |
| RHEL 7 | perf +18 | 3.10.0-327.10.1.el7 | RHSA-2016:0185 |
| RHEL 6 | perf +16 | 2.6.32-573.12.1.el6 | RHSA-2015:2636 |
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.rt56.171.el6rt | RHSA-2016:0224 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | kernel-obs-build | 3.12.51-60.20.1 | SUSE-SU-2015:2292-1 |
| SLES 12 SP1 | kernel-xen +4 | 3.12.51-60.20.2 | SUSE-SU-2015:2292-1 |
| SLES 12 | kernel-docs | 3.12.51-52.31.5 | SUSE-SU-2015:2194-1 |
| SLES 12 | kernel-ec2 +5 | 3.12.51-52.31.1 | SUSE-SU-2015:2292-1, SUSE-SU-2015:2194-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-68.2 | SUSE-SU-2015:2339-1 |
| SLES 11 SP4 | kernel-ec2 +7 | 3.0.101-68.1 | SUSE-SU-2015:2339-1 |
| SLES 11 SP3 | kernel-docs | 3.0.101-0.47.71.3 | SUSE-SU-2015:2108-1 |
| SLES 11 SP3 | kernel-ec2 +8 | 3.0.101-0.47.71.1 | SUSE-SU-2015:2108-1 |
| SLES 11 SP2 | kernel-ec2 +6 | 3.0.101-0.7.40.1 | SUSE-SU-2016:2074-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.51-60.20.2 | SUSE-SU-2015:2292-1 |
| SLES for SAP 12 | kernel-xen +3 | 3.12.51-52.31.1 | SUSE-SU-2015:2194-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +7 | 3.0.101-68.1 | SUSE-SU-2015:2339-1 |
| SLES for SAP 11 SP3 | kernel-ec2 +8 | 3.0.101-0.47.71.1 | SUSE-SU-2015:2108-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-48.1 | SUSE-SU-2015:2350-1 |
| SLE Real Time 11 SP3 | kernel-rt +2 | 3.0.101.rt130-0.33.44.2 | SUSE-SU-2016:0354-1 |
| SLE Real Time 11 SP3 | kernel-syms-rt | 3.0.101.rt130-0.33.44.1 | SUSE-SU-2016:0354-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_0 | 2-5.1 | SUSE-SU-2016:0335-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_1 | 1-4.1 | SUSE-SU-2015:2292-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_1 +1 | 5-2.1 | SUSE-SU-2016:0434-1, SUSE-SU-2016:0384-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_3 +2 | 4-2.1 | SUSE-SU-2016:0383-1, SUSE-SU-2016:0381-1, SUSE-SU-2016:0380-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_6 +1 | 3-2.1 | SUSE-SU-2016:0387-1, SUSE-SU-2016:0386-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_8 | 2-2.1 | SUSE-SU-2016:0337-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_9 | 1-2.2 | SUSE-SU-2015:2194-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.2.4.el6uek | 0.4.5-3.el6 | ELSA-2016-3501 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.2.4.el7uek | 0.4.5-3.el7 | ELSA-2016-3501 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.2.4.el7uek | ELSA-2016-3501 |
| Oracle Linux 7 | perf +11 | 3.10.0-327.10.1.el7 | ELSA-2016-0185 |
Advisories 27
- USN-2843-2 linux-lts-wily vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- RHSA-2016:0212 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:0224 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:0185 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:2636 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-2823-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3396-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2824-1 linux-lts-utopic vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2829-2 linux-lts-vivid vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2015:2194-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2339-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0384-1 Security update for kernel live patch 2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0335-1 Security update for kernel live patch SP1 0 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0383-1 Security update for kernel live patch 5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0387-1 Security update for kernel live patch 7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0434-1 Security update for kernel live patch 1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2108-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0354-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0386-1 Security update for kernel live patch 6 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2074-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0337-1 Security update for kernel live patch 8 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0381-1 Security update for kernel live patch 4 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0380-1 Security update for kernel live patch 3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2292-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2350-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2016-0185 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 16, 2016
- ELSA-2016-3501 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 8, 2016
References
- SUSE-SU-2015:2292 vendor-advisory
- RHSA-2015:2636 vendor-advisory
- RHSA-2016:0212 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f05819df10d7b09f6d1eb6f8534a8f68e5a4fe61
- SUSE-SU-2016:0337 vendor-advisory
- SUSE-SU-2015:2350 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1272172
- SUSE-SU-2016:0434 vendor-advisory
- USN-2826-1 vendor-advisory
- https://source.android.com/security/bulletin/2016-12-01.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1272371
- USN-2840-1 vendor-advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05068676
- HPSBGN03565 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- USN-2843-1 vendor-advisory
- SUSE-SU-2015:2194 vendor-advisory
- [oss-security] 20151020 Re: CVE request: crash when attempt to garbage collect an uninstantiated keyring - Linux kernel mailing-list
- SUSE-SU-2016:0380 vendor-advisory
- USN-2829-2 vendor-advisory
- SUSE-SU-2016:0354 vendor-advisory
- USN-2843-2 vendor-advisory
- SUSE-SU-2016:0335 vendor-advisory
- SUSE-SU-2015:2339 vendor-advisory
- SUSE-SU-2015:2108 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- RHSA-2016:0185 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce1fad2740c648a4340f6f6c391a8a83769d2e8c
- USN-2840-2 vendor-advisory
- https://github.com/torvalds/linux/commit/f05819df10d7b09f6d1eb6f8534a8f68e5a4fe61
- SUSE-SU-2016:0383 vendor-advisory
- USN-2829-1 vendor-advisory
- USN-2823-1 vendor-advisory
- SUSE-SU-2016:0386 vendor-advisory
- RHSA-2016:0224 vendor-advisory
- SUSE-SU-2016:2074 vendor-advisory
- 1034472 vdb-entry
- SUSE-SU-2016:0384 vendor-advisory
- USN-2843-3 vendor-advisory
- https://github.com/torvalds/linux/commit/ce1fad2740c648a4340f6f6c391a8a83769d2e8c
- DSA-3396 vendor-advisory
- openSUSE-SU-2016:1008 vendor-advisory
- SUSE-SU-2016:0387 vendor-advisory
- USN-2824-1 vendor-advisory
- 77544 vdb-entry
- SUSE-SU-2016:0381 vendor-advisory