Description
The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted system call.
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 | 4.13.10-1 | — |
| Debian 13 | linux | 4.13.10-1 | — |
| Debian 12 | linux | 4.13.10-1 | — |
| Debian 7 | linux | 3.2.96-1 | DLA-1200-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-gcp-6.11 +4 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-101.124 | USN-3485-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1041.50 | USN-3485-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.13.0-1005.7 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.13.0-1002.5 | USN-3507-2 |
| Ubuntu 16.04 LTS | linux-gke | 4.4.0-1034.34 | USN-3485-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.13.0-32.35~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1010.15 | USN-3485-1 |
| Ubuntu 16.04 LTS | linux-oem | 4.13.0-1010.11 | — |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1077.85 | USN-3485-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1079.84 | USN-3485-1 |
| Ubuntu 14.04 LTS | linux | 3.13.0-161.211 | USN-3798-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1003.3 | USN-3485-3 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-101.124~14.04.1 | USN-3485-2 |
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 | perf +18 | 4.14.0-49.el7a | RHSA-2018:0654 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.85.1 | SUSE-SU-2018:0848-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_26 | 1-2.3.1 | SUSE-SU-2018:0848-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.125.1 | SUSE-SU-2018:0848-1, SUSE-SU-2018:0834-1 |
| SLES 12 | kgraft-patch-SLE12_Update_33 | 1-1.3.1 | SUSE-SU-2018:0834-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.85.1 | SUSE-SU-2018:0848-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_26 | 1-2.3.1 | SUSE-SU-2018:0848-1 |
| SUSE OpenStack Cloud 6 | kernel-xen +3 | 3.12.74-60.64.85.1 | SUSE-SU-2018:0848-1 |
| SUSE OpenStack Cloud 6 | kgraft-patch-SLE12-SP1_Update_26 | 1-2.3.1 | SUSE-SU-2018:0848-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.21.1.el6uek | 0.4.5-3.el6 | ELSA-2018-4109 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.21.1.el7uek | 0.4.5-3.el7 | ELSA-2018-4109 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.21.1.el7uek | ELSA-2018-4109, ELSA-2018-4108 |
Advisories 11
- RHSA-2018:0654 Red Hat Security Advisory: kernel-alt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3798-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3485-1 linux, linux-aws, linux-gke, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1200-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3485-2 linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3485-3 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3507-2 linux-gcp vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2018:0834-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0848-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2018-4109 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 15, 2018
- ELSA-2018-4108 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 15, 2018
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1498016
- https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1499828.html
- [debian-lts-announce] 20171210 [SECURITY] [DLA 1200-1] linux security update mailing-list
- RHSA-2018:0654 vendor-advisory
- https://marc.info/?t=150654188100001&r=1&w=2
- USN-3798-1 vendor-advisory
- USN-3798-2 vendor-advisory
- https://marc.info/?t=150783958600011&r=1&w=2