CWE
416 362
Advisory Published

USN-6090-1: Linux kernel vulnerabilities

First published: Thu May 18 2023(Updated: )

It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. (CVE-2022-27672) 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 the Android Binder IPC subsystem in the Linux kernel did not properly validate inputs 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-2023-20938) 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) 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-5.15.0-1020-gkeop<5.15.0-1020.25
5.15.0-1020.25
=22.04
All of
ubuntu/linux-image-5.15.0-1033-gke<5.15.0-1033.38
5.15.0-1033.38
=22.04
All of
ubuntu/linux-image-5.15.0-1034-gcp<5.15.0-1034.42+1
5.15.0-1034.42+1
=22.04
All of
ubuntu/linux-image-gcp-lts-22.04<5.15.0.1034.30
5.15.0.1034.30
=22.04
All of
ubuntu/linux-image-gke<5.15.0.1033.32
5.15.0.1033.32
=22.04
All of
ubuntu/linux-image-gke-5.15<5.15.0.1033.32
5.15.0.1033.32
=22.04
All of
ubuntu/linux-image-gkeop<5.15.0.1020.19
5.15.0.1020.19
=22.04
All of
ubuntu/linux-image-gkeop-5.15<5.15.0.1020.19
5.15.0.1020.19
=22.04
All of
ubuntu/linux-image-5.15.0-1033-gke<5.15.0-1033.38~20.04.1
5.15.0-1033.38~20.04.1
=20.04
All of
ubuntu/linux-image-5.15.0-1034-gcp<5.15.0-1034.42~20.04.1
5.15.0-1034.42~20.04.1
=20.04
All of
ubuntu/linux-image-5.15.0-1035-oracle<5.15.0-1035.41~20.04.1
5.15.0-1035.41~20.04.1
=20.04
All of
ubuntu/linux-image-gcp<5.15.0.1034.42~20.04.1
5.15.0.1034.42~20.04.1
=20.04
All of
ubuntu/linux-image-gke-5.15<5.15.0.1033.38~20.04.1
5.15.0.1033.38~20.04.1
=20.04
All of
ubuntu/linux-image-oracle<5.15.0.1035.41~20.04.1
5.15.0.1035.41~20.04.1
=20.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2022-27672?

    The severity of CVE-2022-27672 is high.

  • How can a local attacker exploit CVE-2022-27672?

    A local attacker can exploit CVE-2022-27672 by using a return address from a sibling thread to speculatively execute instructions and expose sensitive information.

  • Which versions of Ubuntu are affected by these vulnerabilities?

    Versions 22.04 and 20.04 of Ubuntu are affected by these vulnerabilities.

  • What is the recommended remedy for CVE-2022-27672?

    The recommended remedy for CVE-2022-27672 is to update to version 5.15.0-1020.25 of the linux-image-5.15.0-1020-gkeop package.

  • Where can I find more information about these vulnerabilities?

    You can find more information about these vulnerabilities on the Ubuntu Security Notices website.

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