Description
In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the "_sctp_make_chunk()" function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be exploited to cause a kernel crash.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux Foundation | Linux Kernel | Before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102. | — |
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 | 4.15.11-1 | — |
| Debian 13 | linux | 4.15.11-1 | — |
| Debian 12 | linux | 4.15.11-1 | — |
| Debian 9 | linux | 4.9.88-1 | DSA-4188-1 |
| Debian 8 | linux | 3.16.56-1 | DSA-4187-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | linux | 3.2.101-1 | DLA-1369-1 |
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 | 4.4.0-127.153 | USN-3654-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1060.69 | USN-3654-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1013.13~16.04.2 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1014.14~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-24.26~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1026.31 | USN-3654-1 |
| Ubuntu 16.04 LTS | linux-oem | 4.13.0-1031.35 | USN-3697-2 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1090.98 | USN-3656-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1093.98 | USN-3656-1 |
| Ubuntu 14.04 LTS | linux | 3.13.0-153.203 | USN-3698-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1022.22 | USN-3654-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-127.153~14.04.1 | USN-3654-2 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1008.10 | — |
| 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-alt +1 | 4.14.0-115.el7a | RHSA-2018:2948 |
| RHEL 7 | kernel-rt +10 | 3.10.0-957.rt56.910.el7 | RHSA-2018:3096 |
| RHEL 7 | perf +18 | 3.10.0-957.el7 | RHSA-2018:3083, RHSA-2018:2948 |
| RHEL 6 | perf +16 | 2.6.32-754.el6 | RHSA-2018:1854 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-693.46.1.rt56.639.el6rt | RHSA-2019:0641 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | kernel-docs +6 | 4.12.14-25.3.1 | SUSE-SU-2018:2092-1 |
| SLES 12 SP3 | kernel-docs +4 | 4.4.131-94.29.1 | SUSE-SU-2018:1366-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.85.1 | SUSE-SU-2018:1855-2, SUSE-SU-2018:1855-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_23 | 1-3.5.1 | SUSE-SU-2018:1855-2, SUSE-SU-2018:1855-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.96.1 | SUSE-SU-2018:1761-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_29 | 1-2.3.1 | SUSE-SU-2018:1761-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.136.1 | SUSE-SU-2018:1762-1, SUSE-SU-2018:1761-1 |
| SLES 12 | kgraft-patch-SLE12_Update_36 | 1-1.3.1 | SUSE-SU-2018:1762-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | kernel-ec2 +9 | 3.0.101-108.68.1 | SUSE-SU-2018:2332-1 |
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.106.43.1 | SUSE-SU-2018:2366-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.131-94.29.1 | SUSE-SU-2018:1366-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.85.1 | SUSE-SU-2018:1855-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_23 | 1-3.5.1 | SUSE-SU-2018:1855-1 |
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.96.1 | SUSE-SU-2018:1761-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_29 | 1-2.3.1 | SUSE-SU-2018:1761-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-108.68.1 | SUSE-SU-2018:2332-1 |
| SLE Real Time 12 SP3 | kernel-rt +3 | 4.4.138-3.14.1 | SUSE-SU-2018:1816-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-69.33.1 | SUSE-SU-2018:2637-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-25.3.1 | SUSE-SU-2018:2092-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_1 | 1-1.3.1 | SUSE-SU-2018:2092-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_12 | 1-4.5.2 | SUSE-SU-2018:1366-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.85.1 | SUSE-SU-2018:1855-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_23 | 1-3.5.1 | SUSE-SU-2018:1855-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.106.43.1 | SUSE-SU-2018:2366-1 |
| SUSE Enterprise Storage 4 | kernel-syms +2 | 4.4.121-92.85.1 | SUSE-SU-2018:1855-1 |
| SUSE Enterprise Storage 4 | kgraft-patch-SLE12-SP2_Update_23 | 1-3.5.1 | SUSE-SU-2018:1855-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.22.1.el6uek | 0.4.5-3.el6 | ELSA-2018-4164 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.22.1.el7uek | 0.4.5-3.el7 | ELSA-2018-4164 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.22.1.el7uek | ELSA-2018-4164, ELSA-2018-4161 |
| Oracle Linux 7 | perf +12 | 3.10.0-957.el7 | ELSA-2018-3083 |
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.
GitHub 1 repository
-
Splinter0/CVE-2018-5803 ★ 0 · Aug 24, 2026
Lab for testing CVE-2018-5803
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 27
- RHSA-2019:0641 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2018:3083 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2018:3096 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2018:2948 Red Hat Security Advisory: kernel-alt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2018:1854 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-3654-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3654-1 linux, linux-aws, linux-kvm, vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3698-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4188-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4187-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1369-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3697-2 linux-oem vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3656-1 linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2018:1855-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1366-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2092-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1762-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2366-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1855-2 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2332-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-0532 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 11, 2025
- SUSE-SU-2018:1816-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2018:1761-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2018:2637-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2018-3083 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 5, 2018
- ELSA-2018-4164 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 10, 2018
- ELSA-2018-4161 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 10, 2018
References
- 81331 third-party-advisory
- RHSA-2018:3083 vendor-advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.25
- DSA-4187 vendor-advisory
- USN-3654-1 vendor-advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.51
- RHSA-2018:1854 vendor-advisory
- USN-3697-1 vendor-advisory
- https://cdn.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.102
- DSA-4188 vendor-advisory
- [netdev] 20180207 [Secunia Research] Linux Kernel Vulnerability - Sending information mailing-list
- RHSA-2018:2948 vendor-advisory
- USN-3697-2 vendor-advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=07f2c7ab6f8d0a7e7c5764c4e6cc9c52951b9d9c
- [linux-sctp] 20180209 skb_over_panic on INIT/INIT_ACK packet sending mailing-list
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.87
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.15.8
- USN-3654-2 vendor-advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.121
- USN-3698-1 vendor-advisory
- [debian-lts-announce] 20180502 [SECURITY] [DLA 1369-1] linux security update mailing-list
- USN-3656-1 vendor-advisory
- https://secuniaresearch.flexerasoftware.com/secunia_research/2018-2/
- RHSA-2018:3096 vendor-advisory
- USN-3698-2 vendor-advisory
- RHSA-2019:0641 vendor-advisory