CWE
416 362
Advisory Published

USN-6132-1: Linux kernel vulnerabilities

First published: Thu Jun 01 2023(Updated: )

Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in the netfilter subsystem of the Linux kernel when processing batch requests, 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-2023-32233) Gwangun Jung discovered that the Quick Fair Queueing scheduler implementation in the Linux kernel contained 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-2023-31436) Reima Ishii discovered that the nested KVM implementation for Intel x86 processors in the Linux kernel did not properly validate control registers in certain situations. An attacker in a guest VM could use this to cause a denial of service (guest crash). (CVE-2023-30456) It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux kernel did not properly perform data buffer size validation in some situations. A physically proximate attacker could use this to craft a malicious USB device that when inserted, could cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-1380) Zheng Wang discovered that the Intel i915 graphics driver in the Linux kernel did not properly handle certain error conditions, leading to a double-free. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-3707) Jordy Zomer and Alexandra Sandulescu discovered that the Linux kernel did not properly implement speculative execution barriers in usercopy functions in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2023-0459) It was discovered that the TLS subsystem in the Linux kernel contained a type confusion vulnerability in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-1075) It was discovered that the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel contained a type confusion vulnerability in some situations. An attacker could use this to cause a denial of service (system crash). (CVE-2023-1078) Xingyuan Mo discovered that the x86 KVM implementation in the Linux kernel did not properly initialize some data structures. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2023-1513) It was discovered that a use-after-free vulnerability existed in the iSCSI TCP implementation in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-2162) Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu Linux kernel contained a race condition when handling inode locking in some situations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2023-2612) It was discovered that the NET/ROM protocol implementation in the Linux kernel contained a race condition in some situations, 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-2023-32269) Duoming Zhou discovered that a race condition existed in the infrared receiver/transceiver driver in the Linux kernel, leading to a use-after- free vulnerability. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-1118)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.4.0-1064-bluefield<5.4.0-1064.70
5.4.0-1064.70
=20.04
All of
ubuntu/linux-image-bluefield<5.4.0.1064.59
5.4.0.1064.59
=20.04
All of
ubuntu/linux-image-5.4.0-1103-aws<5.4.0-1103.111~18.04.1
5.4.0-1103.111~18.04.1
=18.04
All of
ubuntu/linux-image-aws<5.4.0.1103.81
5.4.0.1103.81
=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-6132-1?

    The severity of USN-6132-1 is not mentioned.

  • How does the Linux kernel vulnerability in USN-6132-1 manifest?

    The vulnerability in USN-6132-1 manifests as a race condition in the netfilter subsystem, leading to a use-after-free vulnerability.

  • What can a local attacker do with the Linux kernel vulnerability in USN-6132-1?

    A local attacker can use the vulnerability in USN-6132-1 to cause a denial of service (system crash) or possibly execute arbitrary code.

  • Which versions of Ubuntu are affected by the Linux kernel vulnerability in USN-6132-1?

    The Linux kernel vulnerability in USN-6132-1 affects Ubuntu 20.04 and 18.04.

  • How can the Linux kernel vulnerability in USN-6132-1 be resolved?

    The Linux kernel vulnerability in USN-6132-1 can be fixed by updating to the specified kernel versions: 5.4.0-1064.70 for Ubuntu 20.04, 5.4.0.1064.59 for Ubuntu 20.04, 5.4.0-1103.111~18.04.1 for Ubuntu 18.04, and 5.4.0.1103.81 for Ubuntu 18.04.

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