USN-4363-1

Advisory lineage Upstream: 8 Downstream: 0
Published: 28 May 2020, 20:20
Last modified:23 May 2026, 01:31

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 May 2020, 20:20
Published
Vulnerability first disclosed
23 May 2026, 01:31
Last Modified
Vulnerability information updated

Description

linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities It was discovered that the Serial CAN interface driver in the Linux kernel did not properly initialize data. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-11494) It was discovered that the linux kernel did not properly validate certain mount options to the tmpfs virtual memory file system. A local attacker with the ability to specify mount options could use this to cause a denial of service (system crash). (CVE-2020-11565) David Gibson discovered that the Linux kernel on Power9 CPUs did not properly save and restore Authority Mask registers state in some situations. A local attacker in a guest VM could use this to cause a denial of service (host system crash). (CVE-2020-11669) It was discovered that the block layer in the Linux kernel contained a race condition leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2020-12657)

Affected Systems

  • ubuntu•linux

    < 4.15.0-101.102

  • ubuntu•linux-aws

    < 4.15.0-1067.71

  • ubuntu•linux-aws-hwe

    < 4.15.0-1067.71~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1083.93~16.04.1

  • ubuntu•linux-azure-4.15

    < 4.15.0-1083.93

  • ubuntu•linux-gcp

    < 4.15.0-1071.81~16.04.1

  • ubuntu•linux-gke-4.15

    < 4.15.0-1059.62

  • ubuntu•linux-hwe

    < 4.15.0-101.102~16.04.1

  • ubuntu•linux-kvm

    < 4.15.0-1060.61

  • ubuntu•linux-oem

    < 4.15.0-1081.91

  • ubuntu•linux-oracle

    < 4.15.0-1039.43~16.04.1 | < 4.15.0-1039.43

  • ubuntu•linux-raspi2

    < 4.15.0-1062.66

  • ubuntu•linux-snapdragon

    < 4.15.0-1079.86

References (5)