CWE
416 362
Advisory Published

USN-6123-1: Linux kernel (OEM) vulnerabilities

First published: Tue May 30 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) 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 Xircom PCMCIA network device driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2023-1670) 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 NTFS file system implementation in the Linux kernel did not properly handle a loop termination condition, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-26606)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-oem-22.04b<6.0.0.1017.17
6.0.0.1017.17
Ubuntu Ubuntu=22.04
All of
ubuntu/linux-image-6.0.0-1017-oem<6.0.0-1017.17
6.0.0-1017.17
Ubuntu Ubuntu=22.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this Linux kernel (OEM) vulnerabilities?

    The vulnerability ID for this Linux kernel (OEM) vulnerabilities is USN-6123-1.

  • What is the severity of USN-6123-1?

    The severity of USN-6123-1 is not specified.

  • How can a local attacker exploit USN-6123-1?

    A local attacker can exploit USN-6123-1 by causing a denial of service (system crash) or possibly executing arbitrary code.

  • Which versions of Ubuntu are affected by USN-6123-1?

    Versions of Ubuntu 22.04 with the Linux kernel (OEM) versions up to and excluding 6.0.0.1017.17 and 6.0.0-1017.17 are affected by USN-6123-1.

  • How can I fix the USN-6123-1 vulnerability?

    To fix the USN-6123-1 vulnerability, update to Linux kernel (OEM) versions 6.0.0.1017.17 or 6.0.0-1017.17 or later.

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