CWE
416 362
Advisory Published

USN-5165-1: Linux kernel (OEM) vulnerabilities

First published: Tue Nov 30 2021(Updated: )

It was discovered that the NFC subsystem in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface (NCI) implementation. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-3760) It was discovered that the SCTP protocol implementation in the Linux kernel did not properly verify VTAGs in some situations. A remote attacker could possibly use this to cause a denial of service (connection disassociation). (CVE-2021-3772) It was discovered that the AMD Radeon GPU driver in the Linux kernel did not properly validate writes in the debugfs file system. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-42327) Luo Likang discovered that the FireDTV Firewire driver in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-42739) It was discovered that the KVM implementation for POWER8 processors in the Linux kernel did not properly keep track if a wakeup event could be resolved by a guest. An attacker in a guest VM could possibly use this to cause a denial of service (host OS crash). (CVE-2021-43056) It was discovered that the TIPC Protocol implementation in the Linux kernel did not properly validate MSG_CRYPTO messages in some situations. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-43267) It was discovered that the ISDN CAPI implementation in the Linux kernel contained a race condition in certain situations that could trigger an array out-of-bounds bug. A privileged local attacker could possibly use this to cause a denial of service or execute arbitrary code. (CVE-2021-43389)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-oem-20.04d<5.14.0.1008.8
5.14.0.1008.8
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-5.14.0-1008-oem<5.14.0-1008.8
5.14.0-1008.8
Ubuntu Ubuntu=20.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this Ubuntu security advisory?

    The vulnerability ID for this Ubuntu security advisory is USN-5165-1.

  • What is the severity level of the vulnerability?

    The severity level of the vulnerability is not mentioned in the provided information.

  • What is the affected software?

    The affected software is the Linux kernel OEM version 5.14.0.1008.8 and Ubuntu 20.04.

  • What is the impact of the vulnerability?

    The vulnerability could potentially allow a local attacker to cause a denial of service (system crash) or execute arbitrary code.

  • How do I mitigate this vulnerability?

    To mitigate this vulnerability, it is recommended to update to Linux kernel OEM version 5.14.0.1008.8 or higher.

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