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Vulnerability · Published Jan 20, 2025 · Assigned by Linux

CVE-2023-52923netfilter: nf_tables: adapt set backend to use GC transaction API

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 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 81.0% 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: adapt set backend to use GC transaction API Use the GC transaction API to replace the old and buggy gc API and the busy mark approach. No set elements are removed from async garbage collection anymore, instead the _DEAD bit is set on so the set element is not visible from lookup path anymore. Async GC enqueues transaction work that might be aborted and retried later. rbtree and pipapo set backends does not set on the _DEAD bit from the sync GC path since this runs in control plane path where mutex is held. In this case, set elements are deactivated, removed and then released via RCU callback, sync GC never fails.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.64-1DEBIAN-CVE-2023-52923
Debian:13linux6.4.11-1DEBIAN-CVE-2023-52923
Debian:14linux6.4.11-1DEBIAN-CVE-2023-52923
Ubuntu:22.04:LTSlinux5.15.0-87.97UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-aws5.15.0-1048.53UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-azure5.15.0-1050.57UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1050.57.1UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-gcp5.15.0-1045.53UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-gke5.15.0-1045.50UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1031.37UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-ibm5.15.0-1041.44UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1043.49UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-kvm5.15.0-1045.50UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-87.96UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1039.39UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1019.19UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1006.6UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-oracle5.15.0-1046.52UBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-raspi5.15.0-1041.44UBUNTU-CVE-2023-52923
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-52923
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1025.29UBUNTU-CVE-2023-52923

Affected products (as reported)

VendorProductVersions
Linux Linux 9d0982927e79049675cb6c6c04a0ebb3dad5a434 – before cb4d00b563675ba8ff6ef94b077f58d816f68ba39d0982927e79049675cb6c6c04a0ebb3dad5a434 – before c357648929c8dff891502349769aafb8f0452bc29d0982927e79049675cb6c6c04a0ebb3dad5a434 – before 146c76866795553dbc19998f36718d7986ad302b9d0982927e79049675cb6c6c04a0ebb3dad5a434 – before 479a2cf5259347d6a1f658b0f791d27a34908e919d0982927e79049675cb6c6c04a0ebb3dad5a434 – before df650d6a4bf47248261b61ef6b174d7c54034d159d0982927e79049675cb6c6c04a0ebb3dad5a434 – before e4d71d6a9c7db93f7bf20c3a0f0659d63d7de6819d0982927e79049675cb6c6c04a0ebb3dad5a434 – before f6c383b8c31a93752a52697f8430a71dcbc46adf
Linux Linux 4.1

References