CVE-2019-19377: Use After Free

Published Nov 29, 2019
·
Updated

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and unmounting can lead to a use-after-free in btrfsqueuework in fs/btrfs/async-thread.c.

Affected Software

72 affected componentsFixes available
Linux Linux kernel>=2.6.12<4.19.156
Linux Linux kernel>=4.20<5.4.33
Linux Linux kernel>=5.5.0<5.5.18
Linux Linux kernel>=5.6<5.6.5
NetApp Active Iq Unified Manager Vmware Vsphere
NetApp Cloud Backup
NetApp Steelstore Cloud Integrated Storage
NetApp Solidfire Baseboard Management Controller
debian/linux
6.1.176-16.1.190-16.12.107-16.12.113-17.2.12-17.2.13-1
ubuntu/linux-azure<4.15.0-1091.101~14.04.1
4.15.0-1091.101~14.04.1
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-lts-xenial*
ubuntu/linux-aws-hwe<4.15.0-1079.83~16.04.1
4.15.0-1079.83~16.04.1
ubuntu/linux-azure<4.15.0-1091.101~16.04.1
4.15.0-1091.101~16.04.1
ubuntu/linux-gcp<4.15.0-1080.90~16.04.1
4.15.0-1080.90~16.04.1
ubuntu/linux-hwe<4.15.0-112.113~16.04.1
4.15.0-112.113~16.04.1
ubuntu/linux-oracle<4.15.0-1050.54~16.04.1
4.15.0-1050.54~16.04.1
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-hwe-edge*
ubuntu/linux-kvm*
ubuntu/linux-fips*
ubuntu/linux-fips*
ubuntu/linux<4.15.0-109.110
4.15.0-109.110
ubuntu/linux-aws<4.15.0-1077.81
4.15.0-1077.81
ubuntu/linux-aws-5.3<5.3.0-1019.21~18.04.1
5.3.0-1019.21~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1091.101
4.15.0-1091.101
ubuntu/linux-azure-5.3<5.3.0-1022.23~18.04.1
5.3.0-1022.23~18.04.1
ubuntu/linux-gcp-4.15<4.15.0-1080.90
4.15.0-1080.90
ubuntu/linux-gcp-5.3<5.3.0-1020.22~18.04.1
5.3.0-1020.22~18.04.1
ubuntu/linux-gke-4.15<4.15.0-1066.69
4.15.0-1066.69
ubuntu/linux-gke-5.3<5.3.0-1020.22~18.04.1
5.3.0-1020.22~18.04.1
ubuntu/linux-hwe<5.3.0-53.47~18.04.1
5.3.0-53.47~18.04.1
ubuntu/linux-kvm<4.15.0-1069.70
4.15.0-1069.70
ubuntu/linux-oem<4.15.0-1091.101
4.15.0-1091.101
ubuntu/linux-oracle<4.15.0-1048.52
4.15.0-1048.52
ubuntu/linux-oracle-5.3<5.3.0-1018.20~18.04.1
5.3.0-1018.20~18.04.1
ubuntu/linux-raspi2<4.15.0-1065.69
4.15.0-1065.69
ubuntu/linux-raspi2-5.3<5.3.0-1026.28~18.04.1
5.3.0-1026.28~18.04.1
ubuntu/linux-snapdragon<4.15.0-1083.91
4.15.0-1083.91
ubuntu/linux-aws-5.0*
ubuntu/linux-azure*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-edge*
ubuntu/linux-hwe-edge*
ubuntu/linux-oracle-5.0*
ubuntu/linux-aws-fips<4.15.0-2022.22
4.15.0-2022.22
ubuntu/linux-azure-fips<4.15.0-2006.7
4.15.0-2006.7
ubuntu/linux-fips<4.15.0-1037.42
4.15.0-1037.42
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-31.35
5.4.0-31.35
ubuntu/linux-aws<5.4.0-1011.11
5.4.0-1011.11
ubuntu/linux-azure<5.4.0-1012.12
5.4.0-1012.12
ubuntu/linux-gcp<5.4.0-1011.11
5.4.0-1011.11
ubuntu/linux-kvm<5.4.0-1011.11
5.4.0-1011.11
ubuntu/linux-oem-5.6<5.6.0-1010.10
5.6.0-1010.10
ubuntu/linux-oracle<5.4.0-1011.11
5.4.0-1011.11
ubuntu/linux-raspi<5.4.0-1011.11
5.4.0-1011.11
ubuntu/linux-riscv<5.4.0-26.30
5.4.0-26.30
ubuntu/linux-azure-fde*
ubuntu/linux-azure-fde-5.15<5.15.0-1114.123~20.04.1
5.15.0-1114.123~20.04.1
ubuntu/linux-gke*
ubuntu/linux-raspi2*
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-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1091.101~14.04.1
  3. Upgrade

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

    Fixed in 4.15.0-1079.83~16.04.1
  4. Upgrade

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

    Fixed in 4.15.0-1091.101~16.04.1
  5. Upgrade

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

    Fixed in 4.15.0-1080.90~16.04.1
  6. Upgrade

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

    Fixed in 4.15.0-112.113~16.04.1
  7. Upgrade

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

    Fixed in 4.15.0-1050.54~16.04.1
  8. Upgrade

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

    Fixed in 4.15.0-109.110
  9. Upgrade

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

    Fixed in 4.15.0-1077.81
  10. Upgrade

    Upgrade ubuntu/linux-aws-5.3 to a version that resolves this vulnerability.

    Fixed in 5.3.0-1019.21~18.04.1
  11. Upgrade

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

    Fixed in 4.15.0-1091.101
  12. Upgrade

    Upgrade ubuntu/linux-azure-5.3 to a version that resolves this vulnerability.

    Fixed in 5.3.0-1022.23~18.04.1
  13. Upgrade

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

    Fixed in 4.15.0-1080.90
  14. Upgrade

    Upgrade ubuntu/linux-gcp-5.3 to a version that resolves this vulnerability.

    Fixed in 5.3.0-1020.22~18.04.1
  15. Upgrade

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

    Fixed in 4.15.0-1066.69
  16. Upgrade

    Upgrade ubuntu/linux-gke-5.3 to a version that resolves this vulnerability.

    Fixed in 5.3.0-1020.22~18.04.1
  17. Upgrade

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

    Fixed in 5.3.0-53.47~18.04.1
  18. Upgrade

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

    Fixed in 4.15.0-1069.70
  19. Upgrade

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

    Fixed in 4.15.0-1091.101
  20. Upgrade

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

    Fixed in 4.15.0-1048.52
  21. Upgrade

    Upgrade ubuntu/linux-oracle-5.3 to a version that resolves this vulnerability.

    Fixed in 5.3.0-1018.20~18.04.1
  22. Upgrade

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

    Fixed in 4.15.0-1065.69
  23. Upgrade

    Upgrade ubuntu/linux-raspi2-5.3 to a version that resolves this vulnerability.

    Fixed in 5.3.0-1026.28~18.04.1
  24. Upgrade

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

    Fixed in 4.15.0-1083.91
  25. Upgrade

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

    Fixed in 4.15.0-2022.22
  26. Upgrade

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

    Fixed in 4.15.0-2006.7
  27. Upgrade

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

    Fixed in 4.15.0-1037.42
  28. Upgrade

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

    Fixed in 5.4.0-31.35
  29. Upgrade

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

    Fixed in 5.4.0-1011.11
  30. Upgrade

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

    Fixed in 5.4.0-1012.12
  31. Upgrade

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

    Fixed in 5.4.0-1011.11
  32. Upgrade

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

    Fixed in 5.4.0-1011.11
  33. Upgrade

    Upgrade ubuntu/linux-oem-5.6 to a version that resolves this vulnerability.

    Fixed in 5.6.0-1010.10
  34. Upgrade

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

    Fixed in 5.4.0-1011.11
  35. Upgrade

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

    Fixed in 5.4.0-1011.11
  36. Upgrade

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

    Fixed in 5.4.0-26.30
  37. Upgrade

    Upgrade ubuntu/linux-azure-fde-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1114.123~20.04.1

Event History

Nov 29, 2019
CVE Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
CVE Published
via MITRE·03:55 PM
Data Sourced
via MITRE·03:55 PM
Description
Data Sourced
via OSV·04:15 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·04:15 PM
DescriptionSeverityWeaknessAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2019-19377?

CVE-2019-19377 is classified with high severity due to the potential for a use-after-free vulnerability allowing for arbitrary code execution.

2

How do I fix CVE-2019-19377?

To fix CVE-2019-19377, upgrade your kernel to version 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, or 6.12.10-1.

3

What systems are affected by CVE-2019-19377?

CVE-2019-19377 affects Linux kernel versions between 2.6.12 and 5.4.33, as well as versions up to 5.6.5.

4

What type of vulnerability is CVE-2019-19377?

CVE-2019-19377 is a use-after-free vulnerability stemming from operations on a crafted btrfs filesystem image.

5

Can CVE-2019-19377 lead to system crashes?

Yes, exploitation of CVE-2019-19377 can potentially lead to system crashes or create instability in affected systems.

Company

Resources

Contact

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