Description
The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that contains a jump but lacks a user-defined chain, which allows local users to cause a denial of service (NULL pointer dereference) by leveraging the CAP_NET_RAW or CAP_NET_ADMIN capability, related to arpt_do_table in net/ipv4/netfilter/arp_tables.c, ipt_do_table in net/ipv4/netfilter/ip_tables.c, and ip6t_do_table in net/ipv6/netfilter/ip6_tables.c.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux kernel 4.15.0-rc9 | Linux kernel 4.15.0-rc9 | — |
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 |
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 | 4.4.0-127.153 | 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-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-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 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 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | perf +14 | 4.14.0-115.el7a | RHSA-2018:2948 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 |
| SLE Real Time 12 SP3 | kernel-rt +3 | 4.4.138-3.14.1 | SUSE-SU-2018:1816-1 |
| 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 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 |
Advisories 11
- WID-SEC-2026-4000 Google Android: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 15, 2026
- RHSA-2018:2948 Red Hat Security Advisory: kernel-alt security, bug fix, and enhancement 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
- DSA-4188-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 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-2018:1855-2 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
References
- 1040446 vdb-entry
- USN-3654-1 vendor-advisory
- DSA-4188 vendor-advisory
- RHSA-2018:2948 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1547824
- USN-3654-2 vendor-advisory
- http://lists.openwall.net/netdev/2018/01/27/46
- USN-3656-1 vendor-advisory
- http://patchwork.ozlabs.org/patch/870355/
- https://github.com/torvalds/linux/commit/57ebd808a97d7c5b1e1afb937c2db22beba3c1f8
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=57ebd808a97d7c5b1e1afb937c2db22beba3c1f8