Description
A flaw was found in the Linux kernel present since v4.0-rc1 and through v4.13-rc4. A crafted network packet sent remotely by an attacker may force the kernel to enter an infinite loop in the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a denial-of-service. A certain non-default configuration of LSM (Linux Security Module) and NetLabel should be set up on a system before an attacker could leverage this flaw.
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 | 4.13.4-1 | — |
| Debian 13 | linux | 4.13.4-1 | — |
| Debian 12 | linux | 4.13.4-1 | — |
| Debian 9 | linux | 4.9.110-3+deb9u5 | DSA-4308-1 |
| Debian 8 | linux-4.9 | 4.9.110-3+deb9u5~deb8u1 | DLA-1531-1 |
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 | 4.4.0-138.164 | USN-3797-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1070.80 | USN-3797-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.13.0-1005.7 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.13.0-1002.5 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.13.0-32.35~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1036.42 | USN-3797-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1099.107 | USN-3797-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1103.108 | USN-3797-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1032.35 | USN-3797-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-138.164~14.04.1 | USN-3797-2 |
Show 1 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 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | kernel-azure +2 | 4.12.14-5.16.1 | SUSE-SU-2018:3961-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-25.19.1 | SUSE-SU-2018:2980-1 |
| SLES 12 SP3 | kernel-azure +3 | 4.4.155-4.16.1 | SUSE-SU-2018:2858-1 |
| SLES 12 SP3 | kernel-docs +4 | 4.4.155-94.50.1 | SUSE-SU-2018:2776-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_13 | 12-2.1 | SUSE-SU-2018:2860-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_14 +1 | 10-2.1 | SUSE-SU-2018:2860-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_16 +1 | 9-2.1 | SUSE-SU-2018:2860-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_18 +1 | 7-2.1 | SUSE-SU-2018:2860-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_20 | 6-2.1 | SUSE-SU-2018:2864-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_21 +1 | 5-2.1 | SUSE-SU-2018:2864-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_23 +1 | 3-2.1 | SUSE-SU-2018:2864-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SLES 12 SP2 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | kernel-azure +2 | 4.4.155-4.16.1 | SUSE-SU-2018:2858-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.155-94.50.1 | SUSE-SU-2018:2776-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_13 | 12-2.1 | SUSE-SU-2018:2860-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_14 +1 | 10-2.1 | SUSE-SU-2018:2860-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_16 +1 | 9-2.1 | SUSE-SU-2018:2860-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_18 +1 | 7-2.1 | SUSE-SU-2018:2860-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_20 | 6-2.1 | SUSE-SU-2018:2864-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_21 +1 | 5-2.1 | SUSE-SU-2018:2864-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_23 +1 | 3-2.1 | SUSE-SU-2018:2864-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SLES for SAP 12 SP2 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
| SLE Real Time 12 SP3 | kernel-rt +3 | 4.4.155-3.23.1 | SUSE-SU-2018:2862-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-25.19.1 | SUSE-SU-2018:2981-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_0 | 4-10.2 | SUSE-SU-2018:2940-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_1 +1 | 4-2.1 | SUSE-SU-2018:2940-1, SUSE-SU-2018:2938-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_3 | 3-2.3 | SUSE-SU-2018:2935-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_4 | 2-2.1 | SUSE-SU-2018:2964-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_5 | 1-1.3.1 | SUSE-SU-2018:2981-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_10 +1 | 6-2.1 | SUSE-SU-2018:2961-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_12 +1 | 4-2.1 | SUSE-SU-2018:2961-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_14 +1 | 3-2.1 | SUSE-SU-2018:2963-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_16 | 2-2.1 | SUSE-SU-2018:2961-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_17 | 1-4.3.1 | SUSE-SU-2018:2775-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_2 +1 | 11-2.1 | SUSE-SU-2018:3029-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_4 | 10-2.1 | SUSE-SU-2018:2962-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_5 +2 | 9-2.1 | SUSE-SU-2018:2962-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_8 +1 | 7-2.1 | SUSE-SU-2018:2962-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SUSE OpenStack Cloud 7 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
| SUSE Enterprise Storage 4 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SUSE Enterprise Storage 4 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SUSE Enterprise Storage 4 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.18.9.el7uek | ELSA-2018-4208 |
Advisories 23
- USN-3797-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4308-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1531-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3797-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2018:2981-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2963-1 Security update for the Linux Kernel (Live Patch 15 for SLE 12 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2935-1 Security update for the Linux Kernel (Live Patch 3 for SLE 15) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2775-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2962-1 Security update for the Linux Kernel (Live Patch 8 for SLE 12 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2864-1 Security update for the Linux Kernel (Live Patch 23 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3084-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2980-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2940-1 Security update for the Linux Kernel (Live Patch 1 for SLE 15) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2860-1 Security update for the Linux Kernel (Live Patch 18 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3029-1 Security update for the Linux Kernel (Live Patch 2 for SLE 12 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2961-1 Security update for the Linux Kernel (Live Patch 16 for SLE 12 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3961-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2938-1 Security update for the Linux Kernel (Live Patch 2 for SLE 15) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2858-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2776-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2964-1 Security update for the Linux Kernel (Live Patch 4 for SLE 15) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2862-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2018-4208 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 4, 2018
References
- [oss-security] 20180827 CVE-2018-10938: Linux kernel: net: infinite loop in net/ipv4/cipso_ipv4.c:cipso_v4_optptr() allows a remote DoS mailing-list
- USN-3797-2 vendor-advisory
- USN-3797-1 vendor-advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=40413955ee265a5e42f710940ec78f5450d49149
- [debian-lts-announce] 20181003 [SECURITY] [DLA 1531-1] linux-4.9 security update mailing-list
- 1041569 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10938
- 105154 vdb-entry
- DSA-4308 vendor-advisory