Description
The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux kernel since 3.13 up to 4.14 (not including) | Linux kernel since 3.13 up to 4.14 (not including) | — |
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 | 4.13.13-1 | — |
| Debian 13 | linux | 4.13.13-1 | — |
| Debian 12 | linux | 4.13.13-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | 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 | 4.4.0-103.126 | USN-3509-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1043.52 | USN-3509-1 |
| 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-hwe | 4.13.0-32.35~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1012.17 | USN-3509-1 |
| Ubuntu 16.04 LTS | linux-oem | 4.13.0-1010.11 | — |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1079.87 | USN-3509-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1081.86 | USN-3509-1 |
| Ubuntu 14.04 LTS | linux | 3.13.0-153.203 | USN-3698-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1005.5 | USN-3509-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-103.126~14.04.1 | USN-3509-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-693.17.1.rt56.636.el7 | RHSA-2018:0152 |
| RHEL 7 | perf +18 | 3.10.0-693.17.1.el7 | RHSA-2018:0151 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-693.17.1.rt56.604.el6rt | RHSA-2018:0181 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-docs +4 | 4.4.103-6.33.1 | SUSE-SU-2017:3398-1 |
| SLES 12 SP2 | kernel-docs +4 | 4.4.103-92.53.1 | SUSE-SU-2017:3410-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.66.1 | SUSE-SU-2017:3210-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_23 | 1-2.1 | SUSE-SU-2017:3210-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.106.1 | SUSE-SU-2017:3249-1, SUSE-SU-2017:3210-1 |
| SLES 12 | kgraft-patch-SLE12_Update_29 | 1-5.1 | SUSE-SU-2017:3249-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.103-6.33.1 | SUSE-SU-2017:3398-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.103-92.53.1 | SUSE-SU-2017:3410-1 |
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.66.1 | SUSE-SU-2017:3210-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_23 | 1-2.1 | SUSE-SU-2017:3210-1 |
| SLE Real Time 12 SP2 | kernel-rt +3 | 4.4.104-24.1 | SUSE-SU-2018:0213-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_6 | 1-4.3.1 | SUSE-SU-2017:3398-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_16 | 1-3.3.1 | SUSE-SU-2017:3410-1 |
| SUSE OpenStack Cloud 6 | kernel-xen +3 | 3.12.74-60.64.66.1 | SUSE-SU-2017:3210-1 |
| SUSE OpenStack Cloud 6 | kgraft-patch-SLE12-SP1_Update_23 | 1-2.1 | SUSE-SU-2017:3210-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-112.14.14.el7uek | ELSA-2018-4025 |
| Oracle Linux 7 | perf +11 | 3.10.0-693.17.1.el7 | ELSA-2018-0151 |
Advisories 14
- RHSA-2018:0181 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:0151 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:0152 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3698-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3509-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3509-2 linux-lts-xenial, 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-2017:3410-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0213-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3210-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3398-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3249-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2018-4025 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 7, 2018
- ELSA-2018-0151 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 25, 2018
References
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
- https://github.com/torvalds/linux/commit/ea6789980fdaa610d7eb63602c746bf6ec70cd2b
- 101678 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1501215
- RHSA-2018:0151 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea6789980fdaa610d7eb63602c746bf6ec70cd2b
- USN-3698-1 vendor-advisory
- USN-3698-2 vendor-advisory