Use-after-free in Linux kernel - CVE-2023-6817

Vulnerability identifier: #VU84586

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2023-6817

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

Affected software:
Linux kernel
Amazon Linux AMI
Debian Linux
Red Hat Enterprise Linux for Power, little endian
Anolis OS
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service
Red Hat Enterprise Linux Server - AUS
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Ubuntu
openEuler
Chrome OS
SIMATIC S7-1500 TM MFP
Red Hat OpenShift Container Platform
OpenShift Logging
Red Hat Migration Toolkit for Applications
IBM Security Verify Governance
Juniper Secure Analytics (JSA)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-abi-stablelists
kernel-debug
kernel-cross-headers
kernel-core
kernel-doc
kernel-debug-core
python3-perf
perf
kernel-tools-libs-devel
kernel-tools-libs
kernel-tools
kernel-modules-extra
kernel-modules
kernel-headers
kernel-devel
kernel-debug-modules-extra
kernel-debug-modules
kernel-debug-devel
bpftool
kernel
python3-perf-debuginfo
bpftool-debuginfo
kernel-debuginfo
kernel-source
kernel-debugsource
perf-debuginfo
kernel-tools-devel
kernel-tools-debuginfo
kernel-modules-internal
linux (Debian package)
linux-image-virtual (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-5.15.0-92-lowlatency-64k (Ubuntu package)
linux-image-5.15.0-92-lowlatency (Ubuntu package)
linux-image-5.15.0-92-generic-64k (Ubuntu package)
linux-image-5.15.0-92-generic-lpae (Ubuntu package)
linux-image-5.15.0-92-generic (Ubuntu package)
linux-image-lowlatency-hwe-20.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package)
linux-image-oem-20.04b (Ubuntu package)
linux-image-oem-20.04c (Ubuntu package)
linux-image-oem-20.04d (Ubuntu package)
linux-image-virtual-hwe-20.04 (Ubuntu package)
linux-image-oem-20.04 (Ubuntu package)
linux-image-generic-lpae-hwe-20.04 (Ubuntu package)
linux-image-generic-hwe-20.04 (Ubuntu package)
linux-image-generic-64k-hwe-20.04 (Ubuntu package)
linux-image-gkeop-5.15 (Ubuntu package)
linux-image-gkeop (Ubuntu package)
linux-image-5.15.0-1035-gkeop (Ubuntu package)
linux-image-5.15.0-1043-nvidia-lowlatency (Ubuntu package)
linux-image-5.15.0-1043-nvidia (Ubuntu package)
linux-image-nvidia (Ubuntu package)
linux-image-nvidia-lowlatency (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-5.15.0-1045-raspi (Ubuntu package)
linux-image-5.15.0-1045-ibm (Ubuntu package)
linux-image-5.15.0-1047-intel-iotg (Ubuntu package)
linux-image-5.15.0-1048-intel-iotg (Ubuntu package)
linux-image-gcp-lts-22.04 (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-gke-5.15 (Ubuntu package)
linux-image-5.15.0-1049-kvm (Ubuntu package)
linux-image-5.15.0-1049-gke (Ubuntu package)
linux-image-5.15.0-1049-gcp (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-oracle-lts-22.04 (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-5.15.0-1050-oracle (Ubuntu package)
linux-image-aws-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1052-aws (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-azure-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1054-azure-fde (Ubuntu package)
linux-image-5.15.0-1054-azure (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-azure-cvm (Ubuntu package)
linux-image-azure-fde-lts-22.04 (Ubuntu package)
linux-image-6.1.0-1029-oem (Ubuntu package)
linux-image-oem-22.04b (Ubuntu package)
linux-image-oem-22.04c (Ubuntu package)
linux-image-oem-22.04a (Ubuntu package)
linux-image-oem-22.04 (Ubuntu package)
linux-image-6.2.0-1015-nvidia-64k (Ubuntu package)
linux-image-6.2.0-1015-nvidia (Ubuntu package)
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package)
linux-image-nvidia-6.2 (Ubuntu package)
linux-image-nvidia-64k-6.2 (Ubuntu package)
linux-image-nvidia-hwe-22.04 (Ubuntu package)
linux-image-6.2.0-1018-aws (Ubuntu package)
linux-image-6.2.0-1019-azure (Ubuntu package)
linux-image-6.2.0-1019-azure-fde (Ubuntu package)
linux-image-6.2.0-1021-gcp (Ubuntu package)
linux-image-6.5.0-15-lowlatency (Ubuntu package)
linux-image-6.5.0-15-lowlatency-64k (Ubuntu package)
linux-image-lowlatency-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-6.5.0-15-generic-64k (Ubuntu package)
linux-image-6.5.0-15-generic (Ubuntu package)
linux-image-virtual-hwe-22.04 (Ubuntu package)
linux-image-generic-64k-hwe-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-6.5.0-1006-starfive (Ubuntu package)
linux-image-starfive (Ubuntu package)
linux-image-6.5.0-1008-laptop (Ubuntu package)
linux-image-laptop-23.10 (Ubuntu package)
linux-image-6.5.0-1009-raspi (Ubuntu package)
linux-image-6.5.0-1011-azure (Ubuntu package)
linux-image-6.5.0-1011-gcp (Ubuntu package)
linux-image-6.5.0-1011-azure-fde (Ubuntu package)
linux-image-6.5.0-1012-aws (Ubuntu package)
linux-image-6.5.0-1013-oem (Ubuntu package)
linux-image-oem-22.04d (Ubuntu package)
linux-image-6.5.0-1014-oracle (Ubuntu package)
Storage Copy Data Management
Storage Protect Plus Server
linux-image-intel-iotg (Ubuntu package)
linux-image-intel (Ubuntu package)
IBM Storage Scale System
IBM Qradar SIEM

The vulnerability allows a local authenticated user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the netfilter nf_tables component in Linux kernel. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.

Install update from vendor's website.

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a
• https://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a