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Vulnerability · Published Dec 24, 2025 · Assigned by Linux

CVE-2023-54035netfilter: nf_tables: fix underflow in chain reference counter

High 7.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.1%top 96.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix underflow in chain reference counter Set element addition error path decrements reference counter on chains twice: once on element release and again via nft_data_release(). Then, d6b478666ffa ("netfilter: nf_tables: fix underflow in object reference counter") incorrectly fixed this by removing the stateful object reference count decrement. Restore the stateful object decrement as in b91d90368837 ("netfilter: nf_tables: fix leaking object reference count") and let nft_data_release() decrement the chain reference counter, so this is done only once.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.52-1DEBIAN-CVE-2023-54035
Debian:13linux6.4.4-1DEBIAN-CVE-2023-54035
Debian:14linux6.4.4-1DEBIAN-CVE-2023-54035
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-54035
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-54035
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2023-54035

Affected products (as reported)

VendorProductVersions
Linux Linux 35651fde1a7bb54dde0a46d35cd0d7136869ae86 – before b068314fd8ce751a7f906e55bb90f3551815f1a0628bd3e49cba1c066228e23d71a852c23e26da73 – before 9c959671abc7d4ffdf34eed10c64492d43cb6a3c628bd3e49cba1c066228e23d71a852c23e26da73 – before b389139f12f287b8ed2e2628b72df89a081f0b59bc9f791d2593f17e39f87c6e2b3a36549a3705b13c7ec098e3b588434a8b07ea9b5b36f04cef1f50a136b7942ad2a50de708f76ea299ccb45ac7a7f925aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8d60be2da67d172aecf866302c91ea11533eca4d9
Linux Linux 6.4

References