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Unscored CVE-2024-50038 EUVD-2024-45055GHSA-7428-67h9-qj3r

netfilter: xtables: avoid NFPROTO_UNSPEC where needed

Published Oct 21, 2024 · Updated May 11, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: kernel Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: xtables: avoid NFPROTO_UNSPEC where needed

syzbot managed to call xt_cluster match via ebtables:

WARNING: CPU: 0 PID: 11 at net/netfilter/xt_cluster.c:72 xt_cluster_mt+0x196/0x780
[..]
ebt_do_table+0x174b/0x2a40

Module registers to NFPROTO_UNSPEC, but it assumes ipv4/ipv6 packet
processing. As this is only useful to restrict locally terminating
TCP/UDP traffic, register this for ipv4 and ipv6 family only.

Pablo points out that this is a general issue, direct users of the
set/getsockopt interface can call into targets/matches that were only
intended for use with ip(6)tables.

Check all UNSPEC matches and targets for similar issues:

- matches and targets are fine except if they assume skb_network_header()
is valid -- this is only true when called from inet layer: ip(6) stack
pulls the ip/ipv6 header into linear data area.
- targets that return XT_CONTINUE or other xtables verdicts must be
restricted too, they are incompatbile with the ebtables traverser, e.g.
EBT_CONTINUE is a completely different value than XT_CONTINUE.

Most matches/targets are changed to register for NFPROTO_IPV4/IPV6, as
they are provided for use by ip(6)tables.

The MARK target is also used by arptables, so register for NFPROTO_ARP too.

While at it, bail out if connbytes fails to enable the corresponding
conntrack family.

This change passes the selftests in iptables.git.

Affected products

VendorProductAffectedFixed
Linux Linux 2.6.30 5.15.168

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.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.11.4-1 —
Debian 13 linux 6.11.4-1 —
Debian 12 linux 6.1.115-1 —
Debian 11 linux-6.1 6.1.119-1~deb11u1 DLA-4008-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1057.59 —
Ubuntu 24.04 LTS linux 6.8.0-56.58 USN-7383-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1025.27 USN-7383-1
Ubuntu 24.04 LTS linux-azure 6.8.0-1025.30 USN-7384-1
Ubuntu 24.04 LTS linux-azure-6.11 6.11.0-1012.12~24.04.1 —
Ubuntu 24.04 LTS linux-azure-nvidia 6.8.0-1014.15 USN-7468-1
Ubuntu 24.04 LTS linux-gcp 6.8.0-1026.28 USN-7383-1
Ubuntu 24.04 LTS linux-gcp-6.11 6.11.0-1011.11~24.04.1 —
Ubuntu 24.04 LTS linux-gke 6.8.0-1021.25 USN-7383-1
Ubuntu 24.04 LTS linux-gkeop 6.8.0-1008.10 USN-7383-1
Ubuntu 24.04 LTS linux-ibm 6.8.0-1022.22 USN-7385-1
Ubuntu 24.04 LTS linux-nvidia 6.8.0-1024.27 USN-7383-1
Ubuntu 24.04 LTS linux-nvidia-6.11 6.11.0-1007.7 —
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1024.27.1 USN-7383-1
Ubuntu 24.04 LTS linux-nvidia-tegra 6.8.0-1004.4 —
Ubuntu 24.04 LTS linux-oem-6.11 6.11.0-1015.15 USN-7310-1
Ubuntu 24.04 LTS linux-oem-6.8 6.8.0-1024.24 USN-7386-1
Ubuntu 24.04 LTS linux-oracle 6.8.0-1022.23 USN-7383-1
Ubuntu 24.04 LTS linux-raspi 6.8.0-1028.32 USN-7524-1
Ubuntu 24.04 LTS linux-realtime +1 No fix yet —
Ubuntu 24.04 LTS linux-riscv +1 6.8.0-56.58.1 USN-7383-1
Ubuntu 24.04 LTS linux-xilinx 6.8.0-1017.18 —
Ubuntu 22.04 LTS linux +1 5.15.0-127.137 USN-7166-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1073.79 USN-7166-2
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1027.29~22.04.1 USN-7451-1
Ubuntu 22.04 LTS linux-azure 5.15.0-1078.87 USN-7186-2
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1025.30~22.04.1 USN-7384-2
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1078.87.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1072.80 USN-7166-1
Ubuntu 22.04 LTS linux-gcp-6.8 6.8.0-1026.28~22.04.1 USN-7383-1
Ubuntu 22.04 LTS linux-gke 5.15.0-1070.76 USN-7166-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1056.63 USN-7166-1
Ubuntu 22.04 LTS linux-hwe-6.8 6.8.0-57.59~22.04.1 USN-7403-1
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1066.69 USN-7166-1
Ubuntu 22.04 LTS linux-ibm-6.8 6.8.0-1023.23~22.04.1 —
Ubuntu 22.04 LTS linux-kvm 5.15.0-1070.75 USN-7166-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1068.69 USN-7166-1
Ubuntu 22.04 LTS linux-nvidia-6.8 6.8.0-1024.27~22.04.1 USN-7383-1
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1032.32 —
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1020.20 —
Ubuntu 22.04 LTS linux-oracle +1 5.15.0-1071.77 USN-7186-1, USN-7166-1
Ubuntu 22.04 LTS linux-oracle-6.8 6.8.0-1022.23~22.04.1 USN-7383-1
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 22.04 LTS linux-riscv-6.8 +1 6.8.0-56.58.1~22.04.1 USN-7383-1
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1039.43 USN-7166-4
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1073.79~20.04.1 USN-7166-2
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1078.87~20.04.1 USN-7194-1
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1072.80~20.04.1 USN-7166-1
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-127.137~20.04.1 USN-7166-3, USN-7166-1
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1066.69~20.04.1 USN-7166-1
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1032.32~20.04.1 —
Ubuntu 20.04 LTS linux-oracle-5.15 +1 5.15.0-1071.77~20.04.1 USN-7186-2, USN-7166-1
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1069.73~20.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Show 16 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2023.24 USN-7523-1
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1018.19 USN-7383-2
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1066.68 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1074.82 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1018.19~22.04.1 —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-78.78+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1073.79+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1078.87+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-127.137+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1072.80+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 20.04 LTS linux +10 No fix yet —
Ubuntu Pro 18.04 LTS linux +12 No fix yet —
Ubuntu Pro 16.04 LTS linux +7 No fix yet —
Ubuntu Pro 14.04 LTS linux +3 No fix yet —
ReleasePackageFixed inAdvisory
RHEL 9 rv +77 5.14.0-570.12.1.el9_6 RHSA-2025:6966
ReleasePackageFixed inAdvisory
SLES 15 SP7 kernel-64kb +6 6.4.0-150700.53.3.1 SUSE-SU-2025:01951-1
SLES 15 SP7 kernel-azure +2 6.4.0-150700.20.3.1 SUSE-SU-2025:01967-1
SLES 15 SP7 kernel-default-base 6.4.0-150700.53.3.1.150700.17.2.1 SUSE-SU-2025:01951-1
SLES 15 SP6 kernel-64kb +6 6.4.0-150600.23.50.1 SUSE-SU-2025:01614-1
SLES 15 SP6 kernel-azure +2 6.4.0-150600.8.37.1 SUSE-SU-2025:01707-1
SLES 15 SP6 kernel-coco +3 6.4.0-15061.21.coco15sp6.1 SUSE-SU-2025:01919-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.50.1.150600.12.22.1 SUSE-SU-2025:01614-1
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.103.1 SUSE-SU-2025:01620-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.103.1.150500.6.49.1 SUSE-SU-2025:01620-1
SLES 12 SP5 kernel-syms +2 4.12.14-122.258.1 SUSE-SU-2025:01600-1
Show 10 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.103.1.150500.6.49.1 SUSE-SU-2025:01620-1
SLES for SAP 15 SP5 kernel-docs +4 5.14.21-150500.55.103.1 SUSE-SU-2025:01620-1
SLE Micro 6.1 kernel-default-base 6.4.0-28.1.21.6 SUSE-SU-2025:20270-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_7 1-1.3 SUSE-SU-2025:20283-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_6 1-3.1 SUSE-SU-2025:20270-1
SLE Micro 6.1 kernel-rt +1 6.4.0-30.1 SUSE-SU-2025:20283-1
SLE Micro 6.1 kernel-source +2 6.4.0-28.1 SUSE-SU-2025:20270-1
SLE Micro 6.0 kernel-default-base 6.4.0-28.1.21.6 SUSE-SU-2025:20192-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_7 1-1.3 SUSE-SU-2025:20206-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_6 1-3.1 SUSE-SU-2025:20192-1
SLE Micro 6.0 kernel-rt +1 6.4.0-30.1 SUSE-SU-2025:20206-1
SLE Micro 6.0 kernel-source +2 6.4.0-28.1 SUSE-SU-2025:20192-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.103.1.150500.6.49.1 SUSE-SU-2025:01620-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.94.1 SUSE-SU-2025:01640-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.103.1 SUSE-SU-2025:01620-1
SLE Live Patching 15 SP7 kernel-default 6.4.0-150700.53.3.1 SUSE-SU-2025:01951-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_1 1-150700.15.3.1 SUSE-SU-2025:01951-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.50.1 SUSE-SU-2025:01614-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_11 1-150600.1.3.2 SUSE-SU-2025:01964-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_11 1-150600.13.3.1 SUSE-SU-2025:01614-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.103.1 SUSE-SU-2025:01620-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_26 1-150500.11.3.1 SUSE-SU-2025:01620-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.258.1 SUSE-SU-2025:01600-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_68 1-8.3.1 SUSE-SU-2025:01600-1
SLE HPC 15 SP5 kernel-64kb +5 5.14.21-150500.55.103.1 SUSE-SU-2025:01620-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.103.1.150500.6.49.1 SUSE-SU-2025:01620-1
SUSE Real Time Module 15 SP6 kernel-rt +3 6.4.0-150600.10.39.1 SUSE-SU-2025:01964-1
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed kernel-source 6.11.8-1.1 openSUSE-SU-2024:14500-1
openSUSE Tumbleweed kernel-source-longterm 6.12.11-1.1 openSUSE-SU-2025:14705-1
openSUSE Leap 15.6 dtb-aarch64 +10 6.4.0-150600.23.50.1 SUSE-SU-2025:01614-1
openSUSE Leap 15.6 kernel-azure +2 6.4.0-150600.8.37.1 SUSE-SU-2025:01707-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.50.1.150600.12.22.1 SUSE-SU-2025:01614-1
openSUSE Leap 15.6 kernel-rt +3 6.4.0-150600.10.39.1 SUSE-SU-2025:01964-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.1.115-126.197 1.0-0.amzn2023 ALAS2023-2025-794
Amazon Linux 2023 perf +14 6.1.115-126.197.amzn2023 ALAS2023-2025-794

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 kernel 6.6.57.1-1 —
Azure Linux 2 (CBL-Mariner) kernel 5.15.173.1-1 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 bpftool +13 5.15.0-303.171.5.2.el9uek ELSA-2025-6966, ELSA-2024-12887
Oracle Linux 9 rv +28 5.14.0-570.12.1.0.1.el9_6 ELSA-2025-6966

Advisories 41

References