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Unscored CVE-2023-52924 EUVD-2023-59440GHSA-4rw8-6238-r9gq

netfilter: nf_tables: don't skip expired elements during walk

Published Feb 5, 2025 · Updated Nov 5, 2026 · Assigned by Linux

Vendor: Linux Product: Linux 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-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-6.2 Package: linux-azure-6.5 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-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-6.2 Package: linux-gcp-6.5 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-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 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-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 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-6.5 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-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime 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-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

netfilter: nf_tables: don't skip expired elements during walk

There is an asymmetry between commit/abort and preparation phase if the
following conditions are met:

1. set is a verdict map ("1.2.3.4 : jump foo")
2. timeouts are enabled

In this case, following sequence is problematic:

1. element E in set S refers to chain C
2. userspace requests removal of set S
3. kernel does a set walk to decrement chain->use count for all elements
from preparation phase
4. kernel does another set walk to remove elements from the commit phase
(or another walk to do a chain->use increment for all elements from
abort phase)

If E has already expired in 1), it will be ignored during list walk, so its use count
won't have been changed.

Then, when set is culled, ->destroy callback will zap the element via
nf_tables_set_elem_destroy(), but this function is only safe for
elements that have been deactivated earlier from the preparation phase:
lack of earlier deactivate removes the element but leaks the chain use
count, which results in a WARN splat when the chain gets removed later,
plus a leak of the nft_chain structure.

Update pipapo_get() not to skip expired elements, otherwise flush
command reports bogus ENOENT errors.

Affected products

VendorProductAffectedFixed
Linux Linux 4.1 4.19.316

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 6.4.11-1 —
Debian 13 linux 6.4.11-1 —
Debian 12 linux 6.1.64-1 —
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1028.30 —
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux 5.15.0-87.97 —
Ubuntu 22.04 LTS linux-aws 5.15.0-1048.53 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1050.57 —
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1050.57.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1045.53 —
Ubuntu 22.04 LTS linux-gke +1 5.15.0-1045.50 —
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1031.37 —
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1041.44 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1043.49 —
Ubuntu 22.04 LTS linux-lowlatency 5.15.0-87.96 —
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1039.39 —
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1019.19 —
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1006.6 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1046.52 —
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1025.29 —
Ubuntu 20.04 LTS linux 5.4.0-173.191 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1120.130 —
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1048.53~20.04.1 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1126.133 —
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1050.57~20.04.1 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1080.87 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1124.133 —
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1045.53~20.04.2 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 5.15.0-87.97~20.04.1 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1067.72 —
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1041.44~20.04.1 —
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1043.49~20.04.1 —
Ubuntu 20.04 LTS linux-iot 5.4.0-1032.33 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1108.115 —
Ubuntu 20.04 LTS linux-lowlatency-hwe-5.15 5.15.0-87.96~20.04.1 —
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1019.19~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1119.128 —
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1046.52~20.04.1 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1104.116 —
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1044.48~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1039.43 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Show 12 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1041.43 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1049.55 —
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 20.04 LTS linux-aws-fips 5.4.0-1120.130+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1126.133+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1094.104 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1124.133+fips1 —
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 No fix yet —
Ubuntu Pro 18.04 LTS linux +5 No fix yet —
Ubuntu Pro 18.04 LTS linux-aws-5.4 5.4.0-1120.130~18.04.1 —
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1126.133~18.04.1 —
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1124.133~18.04.1 —
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-173.191~18.04.1 —
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1067.72~18.04.1 —
Ubuntu Pro 18.04 LTS linux-oracle-5.4 5.4.0-1119.128~18.04.1 —
Ubuntu Pro 18.04 LTS linux-raspi-5.4 5.4.0-1104.116~18.04.1 —
Ubuntu Pro 16.04 LTS linux +7 No fix yet —
Ubuntu Pro 14.04 LTS linux-aws +2 No fix yet —
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.3.0-427.13.1.el9_4 RHSA-2024:2394
RHEL 9 rv +64 5.14.0-427.13.1.el9_4 RHSA-2024:2394
RHEL 8 perf +26 4.18.0-553.el8_10 RHSA-2024:3138
Show 9 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Red Hat Rhel Extras Rt Els 7 kernel-rt +7 3.10.0-1160.159.1.rt56.1311.el7 RHSA-2026:63189
RHEL 9.2 EUS bpftool 7.0.0-284.55.1.el9_2 RHSA-2024:1018
RHEL 9.2 EUS perf +48 5.14.0-284.55.1.el9_2 RHSA-2024:1018
RHEL 9.0 EUS perf +29 5.14.0-70.101.1.el9_0 RHSA-2024:3421
RHEL 8.6 TUS perf +17 4.18.0-372.111.1.el8_6 RHSA-2024:4447
RHEL 8.6 E4S perf +25 4.18.0-372.111.1.el8_6 RHSA-2024:4447
RHEL 8.6 AUS perf +17 4.18.0-372.111.1.el8_6 RHSA-2024:4447
RHEL 8.4 EUS Long Life perf +17 4.18.0-305.206.1.el8_4 RHSA-2026:65710
RHEL 8.4 AUS perf +17 4.18.0-305.206.1.el8_4 RHSA-2026:65710
RHEL 7 ELS perf +18 3.10.0-1160.159.1.el7 RHSA-2026:61692
ReleasePackageFixed inAdvisory
SLES 15 SP6 kernel-64kb +3 6.4.0-150600.23.42.2 SUSE-SU-2025:0856-1
SLES 15 SP6 kernel-azure +2 6.4.0-150600.8.31.1 SUSE-SU-2025:0847-1
SLES 15 SP6 kernel-coco +3 6.4.0-15061.18.coco15sp6.1 SUSE-SU-2025:0784-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.42.2.150600.12.18.4 SUSE-SU-2025:0856-1
SLES 15 SP6 kernel-docs +2 6.4.0-150600.23.42.1 SUSE-SU-2025:0856-1
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.113.1 SUSE-SU-2025:02264-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.113.1.150500.6.53.1 SUSE-SU-2025:02264-1
SLES 15 SP4 kernel-64kb +3 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SLES 15 SP4 kernel-docs +2 5.14.21-150400.24.170.1 SUSE-SU-2025:02537-1
SLES 15 SP3 kernel-64kb +7 5.3.18-150300.59.198.1 SUSE-SU-2025:0855-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.198.1.150300.18.118.1 SUSE-SU-2025:0855-1
SLES 12 SP5 kernel-syms +2 4.12.14-122.250.1 SUSE-SU-2025:0834-1
Show 21 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.113.1.150500.6.53.1 SUSE-SU-2025:02264-1
SLES for SAP 15 SP5 kernel-docs +4 5.14.21-150500.55.113.1 SUSE-SU-2025:02264-1
SLES for SAP 15 SP4 kernel-default +1 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SLES for SAP 15 SP4 kernel-docs +2 5.14.21-150400.24.170.1 SUSE-SU-2025:02537-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.198.1.150300.18.118.1 SUSE-SU-2025:0855-1
SLES for SAP 15 SP3 kernel-docs +5 5.3.18-150300.59.198.1 SUSE-SU-2025:0855-1
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_Update_6 +1 1-3.1 SUSE-SU-2025:20270-1, SUSE-SU-2025:20260-1
SLE Micro 6.1 kernel-rt +4 6.4.0-28.1 SUSE-SU-2025:20270-1, SUSE-SU-2025:20260-1
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_Update_6 +1 1-3.1 SUSE-SU-2025:20192-1, SUSE-SU-2025:20190-1
SLE Micro 6.0 kernel-rt +4 6.4.0-28.1 SUSE-SU-2025:20192-1, SUSE-SU-2025:20190-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.113.1.150500.6.53.1 SUSE-SU-2025:02264-1
SLE Micro 5.5 kernel-rt 5.14.21-150500.13.100.2 SUSE-SU-2025:02321-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.113.1 SUSE-SU-2025:02264-1
SLE Micro 5.5 kernel-source-rt 5.14.21-150500.13.100.1 SUSE-SU-2025:02321-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.124.1 SUSE-SU-2025:02322-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.124.1 SUSE-SU-2025:02322-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.198.1 SUSE-SU-2025:0855-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.198.1.150300.18.118.1 SUSE-SU-2025:0855-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.202.1 SUSE-SU-2025:0867-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.198.1 SUSE-SU-2025:0855-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.198.1.150300.18.118.1 SUSE-SU-2025:0855-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.202.1 SUSE-SU-2025:0867-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.42.2 SUSE-SU-2025:0856-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_9 1-150600.1.3.2 SUSE-SU-2025:0955-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_9 1-150600.13.3.4 SUSE-SU-2025:0856-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.113.1 SUSE-SU-2025:02264-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_28 1-150500.11.3.1 SUSE-SU-2025:02264-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.198.1 SUSE-SU-2025:0855-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_55 1-150300.7.3.1 SUSE-SU-2025:0855-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.250.1 SUSE-SU-2025:0834-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_66 1-8.3.1 SUSE-SU-2025:0834-1
SLE HPC 15 SP5 kernel-64kb +5 5.14.21-150500.55.113.1 SUSE-SU-2025:02264-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.113.1.150500.6.53.1 SUSE-SU-2025:02264-1
SLE HPC 15 SP4 kernel-64kb +2 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SLE HPC 15 SP4 kernel-docs +2 5.14.21-150400.24.170.1 SUSE-SU-2025:02537-1
SLE HPC 15 SP3 kernel-64kb +6 5.3.18-150300.59.198.1 SUSE-SU-2025:0855-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.198.1.150300.18.118.1 SUSE-SU-2025:0855-1
SUSE Real Time Module 15 SP6 kernel-rt +3 6.4.0-150600.10.29.1 SUSE-SU-2025:0955-1
SUSE Manager Server 4.3 kernel-default +1 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SUSE Manager Server 4.3 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SUSE Manager Server 4.3 kernel-syms +1 5.14.21-150400.24.170.1 SUSE-SU-2025:02537-1
SUSE Manager Proxy 4.3 kernel-default 5.14.21-150400.24.170.2 SUSE-SU-2025:02537-1
SUSE Manager Proxy 4.3 kernel-default-base 5.14.21-150400.24.170.2.150400.24.86.2 SUSE-SU-2025:02537-1
SUSE Manager Proxy 4.3 kernel-syms +1 5.14.21-150400.24.170.1 SUSE-SU-2025:02537-1
SUSE Enterprise Storage 7.1 kernel-64kb +6 5.3.18-150300.59.198.1 SUSE-SU-2025:0855-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.198.1.150300.18.118.1 SUSE-SU-2025:0855-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.6 dtb-aarch64 +4 6.4.0-150600.23.42.1 SUSE-SU-2025:0856-1
openSUSE Leap 15.6 kernel-64kb +5 6.4.0-150600.23.42.2 SUSE-SU-2025:0856-1
openSUSE Leap 15.6 kernel-azure +2 6.4.0-150600.8.31.1 SUSE-SU-2025:0847-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.42.2.150600.12.18.4 SUSE-SU-2025:0856-1
openSUSE Leap 15.6 kernel-rt +3 6.4.0-150600.10.29.1 SUSE-SU-2025:0955-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.1.56-82.125 1.0-0.amzn2023 ALAS2023-2023-385
Amazon Linux 2023 perf +13 6.1.56-82.125.amzn2023 ALAS2023-2023-385
Amazon Linux 2 kernel-livepatch-4.14.349-266.564 1.0-0.amzn2 ALAS2-2024-2613
Amazon Linux 2 perf +8 4.14.349-266.564.amzn2 ALAS2-2024-2613

Advisories 27

References