CWE
119 190 416 362
Advisory Published

USN-5918-1: Linux kernel (BlueField) vulnerabilities

First published: Fri Mar 03 2023(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) Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42896) It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux kernel did not properly perform bounds checking 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 execute arbitrary code. (CVE-2022-3628) It was discovered that a use-after-free vulnerability existed in the Bluetooth stack in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3640) It was discovered that the Xen netback driver in the Linux kernel did not properly handle packets structured in certain ways. An attacker in a guest VM could possibly use this to cause a denial of service (host NIC availability). (CVE-2022-3643) Khalid Masum discovered that the NILFS2 file system implementation in the Linux kernel did not properly handle certain error conditions, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-3649) It was discovered that a race condition existed in the SMSC UFX USB driver implementation in the Linux kernel, leading to a use-after-free vulnerability. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-41849) It was discovered that a race condition existed in the Roccat HID driver 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-2022-41850) Tamás Koczka discovered that the Bluetooth L2CAP implementation in the Linux kernel did not properly initialize memory in some situations. A physically proximate attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2022-42895) It was discovered that an integer overflow vulnerability existed in the Bluetooth subsystem in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2022-45934) It was discovered that the binder IPC implementation in the Linux kernel contained 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-2023-20928)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-bluefield<5.4.0.1058.53
5.4.0.1058.53
=20.04
All of
ubuntu/linux-image-5.4.0-1058-bluefield<5.4.0-1058.64
5.4.0-1058.64
=20.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-5918-1?

    The severity of USN-5918-1 is high.

  • What is the vulnerability in USN-5918-1?

    The vulnerability in USN-5918-1 is a buffer overflow in the NFSD implementation of the Linux kernel.

  • How does the vulnerability in USN-5918-1 impact the system?

    The vulnerability in USN-5918-1 can result in a denial of service (system crash) or the execution of arbitrary code by a remote attacker.

  • Which versions of Ubuntu are affected by USN-5918-1?

    Ubuntu version 20.04 is affected by USN-5918-1.

  • How can I fix USN-5918-1?

    To fix USN-5918-1, update the linux-image-bluefield or linux-image-5.4.0-1058-bluefield package to version 5.4.0.1058.53 or 5.4.0-1058.64 respectively.

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