CVE-2019-19813: Use After Free

Published Dec 17, 2019
·
Updated

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in mutexlock in kernel/locking/mutex.c. This is related to mutexcanspinonowner in kernel/locking/mutex.c, btrfsqgroupfreemeta in fs/btrfs/qgroup.c, and btrfsinsertdelayeditems in fs/btrfs/delayed-inode.c.

Affected Software

81 affected componentsFixes available
Linux Linux kernel=5.0.21
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Debian Debian Linux=9.0
NetApp Active Iq Unified Manager Vmware Vsphere>=9.5
NetApp Data Availability Services
NetApp Hci Management Node
NetApp Solidfire
NetApp Steelstore Cloud Integrated Storage
NetApp Aff A700s Firmware
NetApp AFF A700s
NetApp Fas8300 Firmware
NetApp Fas8300
NetApp Fas8700 Firmware
NetApp Fas8700
NetApp Aff A400 Firmware
NetApp Aff A400
NetApp H610s Firmware
NetApp H610s
All of the following
NetApp Aff A700s Firmware
NetApp AFF A700s
All of the following
NetApp Fas8300 Firmware
NetApp Fas8300
All of the following
NetApp Fas8700 Firmware
NetApp Fas8700
All of the following
NetApp Aff A400 Firmware
NetApp Aff A400
All of the following
NetApp H610s Firmware
NetApp H610s
debian/linux
6.1.176-16.1.190-16.12.107-16.12.113-17.2.12-17.2.13-1
ubuntu/linux-aws<4.4.0-1085.89
4.4.0-1085.89
ubuntu/linux-azure<4.15.0-1091.101~14.04.1
4.15.0-1091.101~14.04.1
ubuntu/linux-lts-xenial<4.4.0-201.233~14.04.1
4.4.0-201.233~14.04.1
ubuntu/linux*
ubuntu/linux<4.4.0-201.233
4.4.0-201.233
ubuntu/linux-aws<4.4.0-1121.135
4.4.0-1121.135
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-kvm<4.4.0-1087.96
4.4.0-1087.96
ubuntu/linux-oracle<4.15.0-1050.54~16.04.1
4.15.0-1050.54~16.04.1
ubuntu/linux-raspi2<4.4.0-1145.155
4.4.0-1145.155
ubuntu/linux-snapdragon<4.4.0-1149.159
4.4.0-1149.159
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1055.61
4.4.0-1055.61
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-azure-4.15<4.15.0-1091.101
4.15.0-1091.101
ubuntu/linux-gcp-4.15<4.15.0-1080.90
4.15.0-1080.90
ubuntu/linux-gke-4.15<4.15.0-1066.69
4.15.0-1066.69
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<4.15.0-1069.70
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-raspi2<4.15.0-1065.69
4.15.0-1065.69
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-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-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-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1085.89
  3. Upgrade

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

    Fixed in 4.15.0-1091.101~14.04.1
  4. Upgrade

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

    Fixed in 4.4.0-201.233~14.04.1
  5. Upgrade

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

    Fixed in 4.4.0-201.233
  6. Upgrade

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

    Fixed in 4.4.0-1121.135
  7. Upgrade

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

    Fixed in 4.15.0-1079.83~16.04.1
  8. Upgrade

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

    Fixed in 4.15.0-1091.101~16.04.1
  9. Upgrade

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

    Fixed in 4.15.0-1080.90~16.04.1
  10. Upgrade

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

    Fixed in 4.15.0-112.113~16.04.1
  11. Upgrade

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

    Fixed in 4.4.0-1087.96
  12. Upgrade

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

    Fixed in 4.15.0-1050.54~16.04.1
  13. Upgrade

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

    Fixed in 4.4.0-1145.155
  14. Upgrade

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

    Fixed in 4.4.0-1149.159
  15. Upgrade

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

    Fixed in 4.4.0-1055.61
  16. Upgrade

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

    Fixed in 4.15.0-109.110
  17. Upgrade

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

    Fixed in 4.15.0-1077.81
  18. Upgrade

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

    Fixed in 4.15.0-1091.101
  19. Upgrade

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

    Fixed in 4.15.0-1080.90
  20. Upgrade

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

    Fixed in 4.15.0-1066.69
  21. Upgrade

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

    Fixed in 5.3.0-26.28~18.04.1
  22. Upgrade

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

    Fixed in 5.3.0-19.20~18.04.2
  23. Upgrade

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

    Fixed in 4.15.0-1069.70
  24. Upgrade

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

    Fixed in 4.15.0-1091.101
  25. Upgrade

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

    Fixed in 4.15.0-1048.52
  26. Upgrade

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

    Fixed in 4.15.0-1065.69
  27. Upgrade

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

    Fixed in 4.15.0-1083.91
  28. Upgrade

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

    Fixed in 4.15.0-2022.22
  29. Upgrade

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

    Fixed in 4.15.0-2006.7
  30. Upgrade

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

    Fixed in 4.15.0-1037.42
  31. 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

Dec 17, 2019
CVE Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
CVE Published
via MITRE·05:43 AM
Data Sourced
via MITRE·05:43 AM
Description
Data Sourced
via OSV·06:15 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·06:15 AM
DescriptionSeverityWeaknessAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2019-19813?

CVE-2019-19813 is classified as a high-severity vulnerability due to the potential for a use-after-free condition affecting system stability.

2

How do I fix CVE-2019-19813?

To resolve CVE-2019-19813, upgrade to Linux kernel versions 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-2019-19813?

CVE-2019-19813 affects Linux kernel version 5.0.21 and related systems including Debian and Ubuntu versions.

4

What type of vulnerability is CVE-2019-19813?

CVE-2019-19813 is a use-after-free vulnerability that occurs in the Linux kernel during synchronization operations.

5

Is there a workaround for CVE-2019-19813?

There are no official workarounds for CVE-2019-19813; the best mitigation is to apply the recommended kernel updates.

Company

Resources

Contact

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