Linux kernel vulnerabilities

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• linux - Linux kernel
• linux-aws - Linux kernel for Amazon Web Services (AWS) systems
• linux-aws-5.4 - Linux kernel for Amazon Web Services (AWS) systems
• linux-azure - Linux kernel for Microsoft Azure Cloud systems
• linux-azure-5.4 - Linux kernel for Microsoft Azure cloud systems
• linux-bluefield - Linux kernel for NVIDIA BlueField platforms
• linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
• linux-gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems
• linux-gkeop - Linux kernel for Google Container Engine (GKE) systems
• linux-hwe-5.4 - Linux hardware enablement (HWE) kernel
• linux-ibm - Linux kernel for IBM cloud systems
• linux-ibm-5.4 - Linux kernel for IBM cloud systems
• linux-iot - Linux kernel for IoT platforms
• linux-oracle - Linux kernel for Oracle Cloud systems
• linux-oracle-5.4 - Linux kernel for Oracle Cloud systems
• linux-raspi - Linux kernel for Raspberry Pi systems
• linux-raspi-5.4 - Linux kernel for Raspberry Pi systems
• linux-xilinx-zynqmp - Linux kernel for Xilinx ZynqMP processors

Details

Lin Ma discovered that the netfilter subsystem in the Linux kernel did not
properly validate network family support while creating a new netfilter
table. A local attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6040)

It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly validate the server frame size in certain
situation, leading to an out-of-bounds read vulnerability. An attacker
could use this to construct a malicious CIFS image that, when operated on,
could cause a denial of service (system crash) or possibly expose sensitive
information. (CVE-2023-6606)

Budimir Markovic, Lucas De Marchi, and Pengfei Xu discovered that the perf
subsystem in the Linux kernel did not properly validate all event sizes
when attaching new events, leading to an out-of-bounds write vulnerability.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2023-6931)

It was discovered that the IGMP protocol implementation in the Linux kernel
contained a race condition, leading to a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2023-6932)