CWE
362
Advisory Published

USN-5114-1: Linux kernel vulnerabilities

First published: Fri Oct 22 2021(Updated: )

It was discovered that a race condition existed in the Atheros Ath9k WiFi driver in the Linux kernel. An attacker could possibly use this to expose sensitive information (WiFi network traffic). (CVE-2020-3702) It was discovered that the KVM hypervisor implementation in the Linux kernel did not properly compute the access permissions for shadow pages in some situations. A local attacker could use this to cause a denial of service. (CVE-2021-38198) It was discovered that the ext4 file system in the Linux kernel contained a race condition when writing xattrs to an inode. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. (CVE-2021-40490) It was discovered that the 6pack network protocol driver in the Linux kernel did not properly perform validation checks. A privileged attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-42008)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.15.0-1029-dell300x<4.15.0-1029.34
4.15.0-1029.34
=18.04
All of
ubuntu/linux-image-4.15.0-1082-oracle<4.15.0-1082.90
4.15.0-1082.90
=18.04
All of
ubuntu/linux-image-4.15.0-1097-raspi2<4.15.0-1097.103
4.15.0-1097.103
=18.04
All of
ubuntu/linux-image-4.15.0-1101-kvm<4.15.0-1101.103
4.15.0-1101.103
=18.04
All of
ubuntu/linux-image-4.15.0-1110-gcp<4.15.0-1110.124
4.15.0-1110.124
=18.04
All of
ubuntu/linux-image-4.15.0-1114-aws<4.15.0-1114.121
4.15.0-1114.121
=18.04
All of
ubuntu/linux-image-4.15.0-1114-snapdragon<4.15.0-1114.123
4.15.0-1114.123
=18.04
All of
ubuntu/linux-image-4.15.0-1125-azure<4.15.0-1125.138
4.15.0-1125.138
=18.04
All of
ubuntu/linux-image-4.15.0-161-generic<4.15.0-161.169
4.15.0-161.169
=18.04
All of
ubuntu/linux-image-4.15.0-161-generic-lpae<4.15.0-161.169
4.15.0-161.169
=18.04
All of
ubuntu/linux-image-4.15.0-161-lowlatency<4.15.0-161.169
4.15.0-161.169
=18.04
All of
ubuntu/linux-image-aws-lts-18.04<4.15.0.1114.117
4.15.0.1114.117
=18.04
All of
ubuntu/linux-image-azure-lts-18.04<4.15.0.1125.98
4.15.0.1125.98
=18.04
All of
ubuntu/linux-image-dell300x<4.15.0.1029.31
4.15.0.1029.31
=18.04
All of
ubuntu/linux-image-gcp-lts-18.04<4.15.0.1110.129
4.15.0.1110.129
=18.04
All of
ubuntu/linux-image-generic<4.15.0.161.150
4.15.0.161.150
=18.04
All of
ubuntu/linux-image-generic-lpae<4.15.0.161.150
4.15.0.161.150
=18.04
All of
ubuntu/linux-image-kvm<4.15.0.1101.97
4.15.0.1101.97
=18.04
All of
ubuntu/linux-image-lowlatency<4.15.0.161.150
4.15.0.161.150
=18.04
All of
ubuntu/linux-image-oracle-lts-18.04<4.15.0.1082.92
4.15.0.1082.92
=18.04
All of
ubuntu/linux-image-raspi2<4.15.0.1097.95
4.15.0.1097.95
=18.04
All of
ubuntu/linux-image-snapdragon<4.15.0.1114.117
4.15.0.1114.117
=18.04
All of
ubuntu/linux-image-virtual<4.15.0.161.150
4.15.0.161.150
=18.04
All of
ubuntu/linux-image-4.15.0-1082-oracle<4.15.0-1082.90~16.04.1
4.15.0-1082.90~16.04.1
=16.04
All of
ubuntu/linux-image-4.15.0-1110-gcp<4.15.0-1110.124~16.04.1
4.15.0-1110.124~16.04.1
=16.04
All of
ubuntu/linux-image-4.15.0-1113-aws<4.15.0-1113.120~16.04.1
4.15.0-1113.120~16.04.1
=16.04
All of
ubuntu/linux-image-4.15.0-1125-azure<4.15.0-1125.138~16.04.1
4.15.0-1125.138~16.04.1
=16.04
All of
ubuntu/linux-image-4.15.0-161-generic<4.15.0-161.169~16.04.1
4.15.0-161.169~16.04.1
=16.04
All of
ubuntu/linux-image-4.15.0-161-lowlatency<4.15.0-161.169~16.04.1
4.15.0-161.169~16.04.1
=16.04
All of
ubuntu/linux-image-aws-hwe<4.15.0.1113.104
4.15.0.1113.104
=16.04
All of
ubuntu/linux-image-azure<4.15.0.1125.116
4.15.0.1125.116
=16.04
All of
ubuntu/linux-image-gcp<4.15.0.1110.111
4.15.0.1110.111
=16.04
All of
ubuntu/linux-image-generic-hwe-16.04<4.15.0.161.154
4.15.0.161.154
=16.04
All of
ubuntu/linux-image-gke<4.15.0.1110.111
4.15.0.1110.111
=16.04
All of
ubuntu/linux-image-lowlatency-hwe-16.04<4.15.0.161.154
4.15.0.161.154
=16.04
All of
ubuntu/linux-image-oem<4.15.0.161.154
4.15.0.161.154
=16.04
All of
ubuntu/linux-image-oracle<4.15.0.1082.70
4.15.0.1082.70
=16.04
All of
ubuntu/linux-image-virtual-hwe-16.04<4.15.0.161.154
4.15.0.161.154
=16.04
All of
ubuntu/linux-image-4.15.0-1125-azure<4.15.0-1125.138~14.04.1
4.15.0-1125.138~14.04.1
=14.04
All of
ubuntu/linux-image-azure<4.15.0.1125.98
4.15.0.1125.98
=14.04

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