CWE
416
Advisory Published

USN-5557-1: Linux kernel vulnerabilities

First published: Tue Aug 09 2022(Updated: )

Zhenpeng Lin discovered that the network packet scheduler implementation in the Linux kernel did not properly remove all references to a route filter before freeing it in some situations. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-2588) It was discovered that the netfilter subsystem of the Linux kernel did not prevent one nft object from referencing an nft set in another nft table, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-2586)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-virtual<4.4.0.231.237
4.4.0.231.237
=16.04
All of
ubuntu/linux-image-generic<4.4.0.231.237
4.4.0.231.237
=16.04
All of
ubuntu/linux-image-aws<4.4.0.1147.151
4.4.0.1147.151
=16.04
All of
ubuntu/linux-image-4.4.0-1112-kvm<4.4.0-1112.122
4.4.0-1112.122
=16.04
All of
ubuntu/linux-image-4.4.0-231-lowlatency<4.4.0-231.265
4.4.0-231.265
=16.04
All of
ubuntu/linux-image-4.4.0-1147-aws<4.4.0-1147.162
4.4.0-1147.162
=16.04
All of
ubuntu/linux-image-4.4.0-231-generic<4.4.0-231.265
4.4.0-231.265
=16.04
All of
ubuntu/linux-image-kvm<4.4.0.1112.109
4.4.0.1112.109
=16.04
All of
ubuntu/linux-image-lowlatency<4.4.0.231.237
4.4.0.231.237
=16.04
All of
ubuntu/linux-image-4.4.0-231-lowlatency<4.4.0-231.265~14.04.1
4.4.0-231.265~14.04.1
=14.04
All of
ubuntu/linux-image-generic-lts-xenial<4.4.0.231.201
4.4.0.231.201
=14.04
All of
ubuntu/linux-image-4.4.0-231-generic<4.4.0-231.265~14.04.1
4.4.0-231.265~14.04.1
=14.04
All of
ubuntu/linux-image-4.4.0-1111-aws<4.4.0-1111.117
4.4.0-1111.117
=14.04
All of
ubuntu/linux-image-lowlatency-lts-xenial<4.4.0.231.201
4.4.0.231.201
=14.04
All of
ubuntu/linux-image-aws<4.4.0.1111.108
4.4.0.1111.108
=14.04
All of
ubuntu/linux-image-virtual-lts-xenial<4.4.0.231.201
4.4.0.231.201
=14.04

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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-5557-1.

  • What is the severity of the vulnerability?

    The severity of the vulnerability is not mentioned in the advisory.

  • How can a local attacker exploit this vulnerability?

    A local attacker can exploit this vulnerability to cause a denial of service (system crash) or execute arbitrary code.

  • Which Linux kernel versions are affected by this vulnerability?

    The Linux kernel versions affected are 4.4.0.231.237, 4.4.0.1147.151, 4.4.0-1112.122, 4.4.0-231.265, 4.4.0-1147.162, 4.4.0-231.265~14.04.1, 4.4.0.231.201, 4.4.0-231.265~14.04.1, 4.4.0-1111.117, 4.4.0.231.201, 4.4.0.1111.108.

  • How do I fix this vulnerability?

    To fix this vulnerability, update your Linux kernel to version 4.4.0.231.237, 4.4.0.1147.151, 4.4.0-1112.122, 4.4.0-231.265, 4.4.0-1147.162, 4.4.0-231.265~14.04.1, 4.4.0.231.201, 4.4.0-231.265~14.04.1, 4.4.0-1111.117, 4.4.0.231.201, or 4.4.0.1111.108 depending on the affected version.

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