CVE-2019-17056: Medium severity Linux Linux kernel vulnerability

Published Oct 1, 2019
·
Updated

Last updated 16 October 2026

Other sources

llcpsockcreate in net/nfc/llcpsock.c in the AFNFC network module in the Linux kernel through 5.3.2 does not enforce CAPNETRAW, which means that unprivileged users can create a raw socket, aka CID-3a359798b176.

— MITRE

Affected Software

47 affected componentsFixes available
Linux Linux kernel<=5.3.2
debian/linux
6.1.176-16.1.190-16.12.107-16.12.113-17.2.12-1
ubuntu/linux-aws<4.4.0-1058.62
4.4.0-1058.62
ubuntu/linux-azure<4.15.0-1063.68~14.04.1
4.15.0-1063.68~14.04.1
ubuntu/linux-lts-xenial<4.4.0-168.197~14.04.1
4.4.0-168.197~14.04.1
ubuntu/linux*
ubuntu/linux<4.4.0-168.197
4.4.0-168.197
ubuntu/linux-aws<4.4.0-1098.109
4.4.0-1098.109
ubuntu/linux-aws-hwe<4.15.0-1054.56~16.04.1
4.15.0-1054.56~16.04.1
ubuntu/linux-azure<4.15.0-1063.68
4.15.0-1063.68
ubuntu/linux-gcp<4.15.0-1049.52
4.15.0-1049.52
ubuntu/linux-hwe<4.15.0-69.78~16.04.1
4.15.0-69.78~16.04.1
ubuntu/linux-kvm<4.4.0-1062.69
4.4.0-1062.69
ubuntu/linux-oracle<4.15.0-1029.32~16.04.1
4.15.0-1029.32~16.04.1
ubuntu/linux-raspi2<4.4.0-1125.134
4.4.0-1125.134
ubuntu/linux-snapdragon<4.4.0-1129.137
4.4.0-1129.137
ubuntu/linux-fips<4.4.0-1025.30
4.4.0-1025.30
ubuntu/linux-fips*
ubuntu/linux<4.15.0-69.78
4.15.0-69.78
ubuntu/linux-aws<4.15.0-1054.56
4.15.0-1054.56
ubuntu/linux-azure<5.0.0-1025.27~18.04.1
5.0.0-1025.27~18.04.1
ubuntu/linux-gcp<5.0.0-1025.26~18.04.1
5.0.0-1025.26~18.04.1
ubuntu/linux-gke-4.15<4.15.0-1048.51
4.15.0-1048.51
ubuntu/linux-gke-5.0<5.0.0-1025.26~18.04.1
5.0.0-1025.26~18.04.1
ubuntu/linux-hwe<5.0.0-35.38~18.04.1
5.0.0-35.38~18.04.1
ubuntu/linux-kvm<4.15.0-1050.50
4.15.0-1050.50
ubuntu/linux-oem<4.15.0-1063.72
4.15.0-1063.72
ubuntu/linux-oem-osp1<5.0.0-1027.31
5.0.0-1027.31
ubuntu/linux-oracle<4.15.0-1029.32
4.15.0-1029.32
ubuntu/linux-raspi2<4.15.0-1050.54
4.15.0-1050.54
ubuntu/linux-snapdragon<4.15.0-1067.74
4.15.0-1067.74
ubuntu/linux-azure-edge*
ubuntu/linux-gcp-edge*
ubuntu/linux-hwe-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 7.2.12-1
  2. Upgrade

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

    Fixed in 4.4.0-1058.62
  3. Upgrade

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

    Fixed in 4.15.0-1063.68~14.04.1
  4. Upgrade

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

    Fixed in 4.4.0-168.197~14.04.1
  5. Upgrade

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

    Fixed in 4.4.0-168.197
  6. Upgrade

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

    Fixed in 4.4.0-1098.109
  7. Upgrade

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

    Fixed in 4.15.0-1054.56~16.04.1
  8. Upgrade

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

    Fixed in 4.15.0-1063.68
  9. Upgrade

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

    Fixed in 4.15.0-1049.52
  10. Upgrade

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

    Fixed in 4.15.0-69.78~16.04.1
  11. Upgrade

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

    Fixed in 4.4.0-1062.69
  12. Upgrade

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

    Fixed in 4.15.0-1029.32~16.04.1
  13. Upgrade

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

    Fixed in 4.4.0-1125.134
  14. Upgrade

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

    Fixed in 4.4.0-1129.137
  15. Upgrade

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

    Fixed in 4.4.0-1025.30
  16. Upgrade

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

    Fixed in 4.15.0-69.78
  17. Upgrade

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

    Fixed in 4.15.0-1054.56
  18. Upgrade

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

    Fixed in 5.0.0-1025.27~18.04.1
  19. Upgrade

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

    Fixed in 5.0.0-1025.26~18.04.1
  20. Upgrade

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

    Fixed in 4.15.0-1048.51
  21. Upgrade

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

    Fixed in 5.0.0-1025.26~18.04.1
  22. Upgrade

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

    Fixed in 5.0.0-35.38~18.04.1
  23. Upgrade

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

    Fixed in 4.15.0-1050.50
  24. Upgrade

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

    Fixed in 4.15.0-1063.72
  25. Upgrade

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

    Fixed in 5.0.0-1027.31
  26. Upgrade

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

    Fixed in 4.15.0-1029.32
  27. Upgrade

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

    Fixed in 4.15.0-1050.54
  28. Upgrade

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

    Fixed in 4.15.0-1067.74
  29. Upgrade

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

    Fixed in 4.15.0-2018.18
  30. Upgrade

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

    Fixed in 4.15.0-2006.7

Event History

Oct 1, 2019
CVE Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
CVE Published
via MITRE·01:10 PM
Data Sourced
via MITRE·01:10 PM
Description
Data Sourced
via OSV·02:15 PM
DescriptionSeverityAffected Software
Event
via OSV·02:15 PM
Data Sourced
via NVD·02:15 PM
RemedyDescriptionSeverityWeaknessAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2019-17056?

CVE-2019-17056 is considered a high-severity vulnerability due to the potential for unprivileged users to create raw sockets.

2

How do I fix CVE-2019-17056?

To fix CVE-2019-17056, update your Linux kernel to versions 5.10.223-1, 5.10.226-1, 6.1.119-1, 6.1.123-1, 6.12.10-1, or 6.12.11-1.

3

Which systems are affected by CVE-2019-17056?

CVE-2019-17056 affects the Linux kernel up to version 5.3.2.

4

What impact does CVE-2019-17056 have on system security?

CVE-2019-17056 allows unprivileged users to create raw sockets, potentially leading to unauthorized network access.

5

Is CVE-2019-17056 present in all Linux distributions?

No, CVE-2019-17056 is specific to certain versions of the Linux kernel and may not be present in all distributions.

Company

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