CWE
416 362
Advisory Published

USN-4659-1: Linux kernel vulnerabilities

First published: Wed Dec 02 2020(Updated: )

It was discovered that a race condition existed in the binder IPC implementation 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-2020-0423) Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered that legacy pairing and secure-connections pairing authentication in the Bluetooth protocol could allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. A physically proximate attacker could use this to impersonate a previously paired Bluetooth device. (CVE-2020-10135) It was discovered that a race condition existed in the perf subsystem of the Linux kernel, leading to a use-after-free vulnerability. An attacker with access to the perf subsystem could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-14351) Keyu Man discovered that the ICMP global rate limiter in the Linux kernel could be used to assist in scanning open UDP ports. A remote attacker could use to facilitate attacks on UDP based services that depend on source port randomization. (CVE-2020-25705) It was discovered that the KVM hypervisor in the Linux kernel did not properly handle interrupts in certain situations. A local attacker in a guest VM could possibly use this to cause a denial of service (host system crash). (CVE-2020-27152) It was discovered that the framebuffer implementation in the Linux kernel did not properly perform range checks in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-28915) It was discovered that Power 9 processors could be coerced to expose information from the L1 cache in certain situations. A local attacker could use this to expose sensitive information. (CVE-2020-4788)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.8.0-1008-raspi<5.8.0-1008.11
5.8.0-1008.11
=20.10
All of
ubuntu/linux-image-5.8.0-1008-raspi-nolpae<5.8.0-1008.11
5.8.0-1008.11
=20.10
All of
ubuntu/linux-image-5.8.0-1011-kvm<5.8.0-1011.12
5.8.0-1011.12
=20.10
All of
ubuntu/linux-image-5.8.0-1011-oracle<5.8.0-1011.11
5.8.0-1011.11
=20.10
All of
ubuntu/linux-image-5.8.0-1012-gcp<5.8.0-1012.12
5.8.0-1012.12
=20.10
All of
ubuntu/linux-image-5.8.0-1013-azure<5.8.0-1013.14
5.8.0-1013.14
=20.10
All of
ubuntu/linux-image-5.8.0-1014-aws<5.8.0-1014.15
5.8.0-1014.15
=20.10
All of
ubuntu/linux-image-5.8.0-31-generic<5.8.0-31.33
5.8.0-31.33
=20.10
All of
ubuntu/linux-image-5.8.0-31-generic-64k<5.8.0-31.33
5.8.0-31.33
=20.10
All of
ubuntu/linux-image-5.8.0-31-generic-lpae<5.8.0-31.33
5.8.0-31.33
=20.10
All of
ubuntu/linux-image-5.8.0-31-lowlatency<5.8.0-31.33
5.8.0-31.33
=20.10
All of
ubuntu/linux-image-aws<5.8.0.1014.16
5.8.0.1014.16
=20.10
All of
ubuntu/linux-image-azure<5.8.0.1013.13
5.8.0.1013.13
=20.10
All of
ubuntu/linux-image-gcp<5.8.0.1012.12
5.8.0.1012.12
=20.10
All of
ubuntu/linux-image-generic<5.8.0.31.36
5.8.0.31.36
=20.10
All of
ubuntu/linux-image-generic-64k<5.8.0.31.36
5.8.0.31.36
=20.10
All of
ubuntu/linux-image-generic-lpae<5.8.0.31.36
5.8.0.31.36
=20.10
All of
ubuntu/linux-image-gke<5.8.0.1012.12
5.8.0.1012.12
=20.10
All of
ubuntu/linux-image-kvm<5.8.0.1011.12
5.8.0.1011.12
=20.10
All of
ubuntu/linux-image-lowlatency<5.8.0.31.36
5.8.0.31.36
=20.10
All of
ubuntu/linux-image-oem-20.04<5.8.0.31.36
5.8.0.31.36
=20.10
All of
ubuntu/linux-image-oracle<5.8.0.1011.11
5.8.0.1011.11
=20.10
All of
ubuntu/linux-image-raspi<5.8.0.1008.11
5.8.0.1008.11
=20.10
All of
ubuntu/linux-image-raspi-nolpae<5.8.0.1008.11
5.8.0.1008.11
=20.10
All of
ubuntu/linux-image-virtual<5.8.0.31.36
5.8.0.31.36
=20.10

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this advisory?

    The vulnerability ID for this advisory is USN-4659-1.

  • What is the severity of USN-4659-1?

    The severity of USN-4659-1 is not mentioned in the description.

  • What is the affected software for USN-4659-1?

    The affected software for USN-4659-1 is the Linux kernel version 5.8.0-1008.11 on Ubuntu 20.10.

  • How can I fix USN-4659-1?

    To fix USN-4659-1, update the Linux kernel to version 5.8.0-1008.11 or later.

  • Where can I find more information about USN-4659-1?

    You can find more information about USN-4659-1 at the following references: [link1](https://ubuntu.com/security/CVE-2020-28915), [link2](https://ubuntu.com/security/CVE-2020-4788), [link3](https://ubuntu.com/security/CVE-2020-10135)

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