CWE
119 416 476 362
Advisory Published

USN-5754-2: Linux kernel (Azure) vulnerabilities

First published: Mon Dec 12 2022(Updated: )

It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-43945) It was discovered that a memory leak existed in the IPv6 implementation of the Linux kernel. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2022-3524) It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel, 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-2022-3564) It was discovered that the ISDN implementation of the Linux kernel contained a use-after-free vulnerability. A privileged user could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3565) It was discovered that the TCP implementation in the Linux kernel contained a data race condition. An attacker could possibly use this to cause undesired behaviors. (CVE-2022-3566) It was discovered that the IPv6 implementation in the Linux kernel contained a data race condition. An attacker could possibly use this to cause undesired behaviors. (CVE-2022-3567) It was discovered that the Realtek RTL8152 USB Ethernet adapter driver in the Linux kernel did not properly handle certain error conditions. A local attacker with physical access could plug in a specially crafted USB device to cause a denial of service (memory exhaustion). (CVE-2022-3594) It was discovered that a null pointer dereference existed in the NILFS2 file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-3621)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.19.0-1013-azure<5.19.0-1013.14
5.19.0-1013.14
=22.10
All of
ubuntu/linux-image-azure<5.19.0.1013.10
5.19.0.1013.10
=22.10

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is USN-5754-2?

    USN-5754-2 is a security advisory issued by Ubuntu that addresses vulnerabilities in the Linux kernel (Azure).

  • What is the severity of CVE-2022-43945?

    The severity of CVE-2022-43945 is high.

  • How can CVE-2022-43945 be exploited?

    CVE-2022-43945 can be exploited by a remote attacker to cause a denial of service or possibly execute arbitrary code.

  • Which versions of Ubuntu are affected by USN-5754-2?

    Ubuntu 22.10 is affected by USN-5754-2.

  • What is the remedy for USN-5754-2?

    To fix USN-5754-2, upgrade to Linux kernel version 5.19.0-1013.14 or higher.

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