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Vulnerability · Published Sep 6, 2023 · Assigned by Google

CVE-2023-4015Use-after-free in Linux kernel's netfilter: nf_tables component

High 7.8

In plain English

A high-severity use-after-free in Kernel 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 22% 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 78.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. On an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used. We recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.52-1DSA-5492-1
Debian:12linux6.1.52-1DEBIAN-CVE-2023-4015
Debian:13linux6.4.11-1DEBIAN-CVE-2023-4015
Debian:14linux6.4.11-1DEBIAN-CVE-2023-4015
Ubuntu:22.04:LTSlinux5.15.0-82.91USN-6315-1
Ubuntu:22.04:LTSlinux5.15.0-82.91UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-aws5.15.0-1043.48USN-6315-1
Ubuntu:22.04:LTSlinux-aws5.15.0-1043.48UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-aws-6.26.2.0-1010.10~22.04.1UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-aws-6.26.2.0-1010.10~22.04.1USN-6318-1
Ubuntu:22.04:LTSlinux-azure5.15.0-1045.52UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-azure5.15.0-1045.52USN-6332-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1045.52.1USN-6332-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1045.52.1UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-gcp5.15.0-1040.48UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-gcp5.15.0-1040.48USN-6315-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-gke5.15.0-1040.45USN-6315-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1040.45UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1026.31UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1026.31USN-6315-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-hwe-6.26.2.0-31.31~22.04.1USN-6318-1
Ubuntu:22.04:LTSlinux-hwe-6.26.2.0-31.31~22.04.1UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-ibm5.15.0-1036.39USN-6315-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1036.39UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1038.43USN-6325-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1038.43UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-kvm5.15.0-1040.45UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-kvm5.15.0-1040.45USN-6315-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-82.91USN-6315-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-82.91UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.26.2.0-1011.11~22.04.1USN-6318-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.26.2.0-1011.11~22.04.1UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1031.31UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1031.31USN-6315-1
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1017.17UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1004.4UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-oem-6.06.0.0-1021.21USN-6385-1
Ubuntu:22.04:LTSlinux-oem-6.06.0.0-1021.21UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1020.20USN-6316-1
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1020.20UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-oracle5.15.0-1041.47USN-6315-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1041.47UBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-raspi5.15.0-1036.39USN-6348-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1036.39UBUNTU-CVE-2023-4015
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-4015
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1025.29UBUNTU-CVE-2023-4015

Affected products (as reported)

VendorProductVersions
Linux Kernel 6.4 – before 6.5

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References