CVE-2019-20096: Medium severity Linux Linux kernel vulnerability

Published Dec 30, 2019
·
Updated

In the Linux kernel before 5.1, there is a memory leak in featregistersp() in net/dccp/feat.c, which may cause denial of service, aka CID-1d3ff0950e2b.

Affected Software

54 affected componentsFixes available
Linux Linux kernel<5.1
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Debian Debian Linux=8.0
debian/linux
6.1.176-16.1.190-16.12.107-16.12.113-17.2.12-17.2.13-1
ubuntu/linux-aws<4.4.0-1062.66
4.4.0-1062.66
ubuntu/linux-azure<4.15.0-1071.76~14.04.1
4.15.0-1071.76~14.04.1
ubuntu/linux-lts-xenial<4.4.0-174.204~14.04.1
4.4.0-174.204~14.04.1
ubuntu/linux*
ubuntu/linux<4.4.0-174.204
4.4.0-174.204
ubuntu/linux-aws<4.4.0-1102.113
4.4.0-1102.113
ubuntu/linux-aws-hwe<4.15.0-1060.62~16.04.1
4.15.0-1060.62~16.04.1
ubuntu/linux-azure<4.15.0-1071.76
4.15.0-1071.76
ubuntu/linux-gcp<4.15.0-1055.59
4.15.0-1055.59
ubuntu/linux-hwe<4.15.0-88.88~16.04.1
4.15.0-88.88~16.04.1
ubuntu/linux-kvm<4.4.0-1066.73
4.4.0-1066.73
ubuntu/linux-oracle<4.15.0-1033.36~16.04.1
4.15.0-1033.36~16.04.1
ubuntu/linux-raspi2<4.4.0-1129.138
4.4.0-1129.138
ubuntu/linux-snapdragon<4.4.0-1133.141
4.4.0-1133.141
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1029.34
4.4.0-1029.34
ubuntu/linux-fips*
ubuntu/linux<4.15.0-88.88
4.15.0-88.88
ubuntu/linux-aws<4.15.0-1060.62
4.15.0-1060.62
ubuntu/linux-aws-5.0<5.0.0-1025.28
5.0.0-1025.28
ubuntu/linux-azure<5.0.0-1032.34
5.0.0-1032.34
ubuntu/linux-gcp<5.0.0-1031.32
5.0.0-1031.32
ubuntu/linux-gke-4.15<4.15.0-1052.55
4.15.0-1052.55
ubuntu/linux-gke-5.0<5.0.0-1030.31
5.0.0-1030.31
ubuntu/linux-hwe<5.3.0-26.28~18.04.1
5.3.0-26.28~18.04.1
ubuntu/linux-hwe-edge<5.3.0-19.20~18.04.2
5.3.0-19.20~18.04.2
ubuntu/linux-kvm<4.15.0-1053.53
4.15.0-1053.53
ubuntu/linux-oem<4.15.0-1073.83
4.15.0-1073.83
ubuntu/linux-oem-osp1<5.0.0-1039.44
5.0.0-1039.44
ubuntu/linux-oracle<4.15.0-1033.36
4.15.0-1033.36
ubuntu/linux-oracle-5.0<5.0.0-1011.16
5.0.0-1011.16
ubuntu/linux-raspi2<4.15.0-1055.59
4.15.0-1055.59
ubuntu/linux-snapdragon<4.15.0-1072.79
4.15.0-1072.79
ubuntu/linux-azure-edge*
ubuntu/linux-gcp-edge*
ubuntu/linux-aws-fips<4.15.0-2018.18
4.15.0-2018.18
ubuntu/linux-azure-fips<4.15.0-2006.7
4.15.0-2006.7
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-azure-fde*
ubuntu/linux-gke*
ubuntu/linux-riscv*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-raspi-realtime*
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.113-1Fixed in 7.2.12-1Fixed in 7.2.13-1
  2. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1062.66
  3. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1071.76~14.04.1
  4. Upgrade

    Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.

    Fixed in 4.4.0-174.204~14.04.1
  5. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.4.0-174.204
  6. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1102.113
  7. Upgrade

    Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-1060.62~16.04.1
  8. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1071.76
  9. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 4.15.0-1055.59
  10. Upgrade

    Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-88.88~16.04.1
  11. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.4.0-1066.73
  12. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1033.36~16.04.1
  13. Upgrade

    Upgrade ubuntu/linux-raspi2 to a version that resolves this vulnerability.

    Fixed in 4.4.0-1129.138
  14. Upgrade

    Upgrade ubuntu/linux-snapdragon to a version that resolves this vulnerability.

    Fixed in 4.4.0-1133.141
  15. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.4.0-1029.34
  16. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.15.0-88.88
  17. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.15.0-1060.62
  18. Upgrade

    Upgrade ubuntu/linux-aws-5.0 to a version that resolves this vulnerability.

    Fixed in 5.0.0-1025.28
  19. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.0.0-1032.34
  20. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.0.0-1031.32
  21. Upgrade

    Upgrade ubuntu/linux-gke-4.15 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1052.55
  22. Upgrade

    Upgrade ubuntu/linux-gke-5.0 to a version that resolves this vulnerability.

    Fixed in 5.0.0-1030.31
  23. Upgrade

    Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.

    Fixed in 5.3.0-26.28~18.04.1
  24. Upgrade

    Upgrade ubuntu/linux-hwe-edge to a version that resolves this vulnerability.

    Fixed in 5.3.0-19.20~18.04.2
  25. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.15.0-1053.53
  26. Upgrade

    Upgrade ubuntu/linux-oem to a version that resolves this vulnerability.

    Fixed in 4.15.0-1073.83
  27. Upgrade

    Upgrade ubuntu/linux-oem-osp1 to a version that resolves this vulnerability.

    Fixed in 5.0.0-1039.44
  28. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1033.36
  29. Upgrade

    Upgrade ubuntu/linux-oracle-5.0 to a version that resolves this vulnerability.

    Fixed in 5.0.0-1011.16
  30. Upgrade

    Upgrade ubuntu/linux-raspi2 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1055.59
  31. Upgrade

    Upgrade ubuntu/linux-snapdragon to a version that resolves this vulnerability.

    Fixed in 4.15.0-1072.79
  32. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2018.18
  33. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2006.7

Event History

Dec 30, 2019
CVE Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
CVE Published
via MITRE·04:39 AM
Data Sourced
via MITRE·04:39 AM
Description
Data Sourced
via OSV·05:15 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·05:15 AM
RemedyDescriptionSeverityWeaknessAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2019-20096?

CVE-2019-20096 is considered to have a high severity level due to its potential to cause denial of service.

2

How do I fix CVE-2019-20096?

To fix CVE-2019-20096, you should upgrade to a Linux kernel version 5.1 or later.

3

Which versions of Linux are affected by CVE-2019-20096?

CVE-2019-20096 affects Linux kernel versions prior to 5.1 and specific versions of Ubuntu and Debian Linux distributions.

4

What is the impact of CVE-2019-20096?

The impact of CVE-2019-20096 is primarily a memory leak that can lead to a denial of service.

5

Is there a workaround for CVE-2019-20096?

There are no specific workarounds for CVE-2019-20096, and upgrading to the patched version is the recommended action.

Company

Resources

Contact

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