CVE-2019-19449: High severity Linux Linux kernel vulnerability

Published Dec 8, 2019
·
Updated

In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can lead to slab-out-of-bounds read access in f2fsbuildsegmentmanager in fs/f2fs/segment.c, related to initminmaxmtime in fs/f2fs/segment.c (because the second argument to getsegentry is not validated).

Affected Software

89 affected componentsFixes available
Linux Linux kernel=5.0.21
debian/linux<=5.10.223-1, <=5.10.234-1, <=6.1.129-1, <=6.1.135-1, <=6.12.25-1, <=6.12.27-1
ubuntu/linux-aws<4.4.0-1102.107
4.4.0-1102.107
ubuntu/linux-azure<4.15.0-1126.139~14.04.1
4.15.0-1126.139~14.04.1
ubuntu/linux-lts-xenial<4.4.0-222.255~14.04.1
4.4.0-222.255~14.04.1
ubuntu/linux*
ubuntu/linux<4.4.0-222.255
4.4.0-222.255
ubuntu/linux-aws<4.4.0-1138.152
4.4.0-1138.152
ubuntu/linux-aws-hwe<4.15.0-1115.122~16.04.1
4.15.0-1115.122~16.04.1
ubuntu/linux-azure<4.15.0-1126.139~16.04.1
4.15.0-1126.139~16.04.1
ubuntu/linux-gcp<4.15.0-1111.125~16.04.1
4.15.0-1111.125~16.04.1
ubuntu/linux-hwe<4.15.0-162.170~16.04.1
4.15.0-162.170~16.04.1
ubuntu/linux-kvm<4.4.0-1103.112
4.4.0-1103.112
ubuntu/linux-oracle<4.15.0-1083.91~16.04.1
4.15.0-1083.91~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1072.78
4.4.0-1072.78
ubuntu/linux-fips*
ubuntu/linux<4.15.0-162.170
4.15.0-162.170
ubuntu/linux-aws<4.15.0-1115.122
4.15.0-1115.122
ubuntu/linux-aws-5.4<5.4.0-1059.62~18.04.1
5.4.0-1059.62~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1126.139
4.15.0-1126.139
ubuntu/linux-azure-5.4<5.4.0-1063.66~18.04.1
5.4.0-1063.66~18.04.1
ubuntu/linux-dell300x<4.15.0-1030.35
4.15.0-1030.35
ubuntu/linux-gcp-4.15<4.15.0-1111.125
4.15.0-1111.125
ubuntu/linux-gcp-5.4<5.4.0-1057.61~18.04.1
5.4.0-1057.61~18.04.1
ubuntu/linux-gke-5.4<5.4.0-1055.58~18.04.1
5.4.0-1055.58~18.04.1
ubuntu/linux-gkeop-5.4<5.4.0-1026.27~18.04.1
5.4.0-1026.27~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-90.101~18.04.1
5.4.0-90.101~18.04.1
ubuntu/linux-kvm<4.15.0-1102.104
4.15.0-1102.104
ubuntu/linux-oracle<4.15.0-1083.91
4.15.0-1083.91
ubuntu/linux-oracle-5.4<5.4.0-1057.61~18.04.1
5.4.0-1057.61~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1046.50~18.04.1
5.4.0-1046.50~18.04.1
ubuntu/linux-raspi2<4.15.0-1098.104
4.15.0-1098.104
ubuntu/linux-snapdragon<4.15.0-1115.124
4.15.0-1115.124
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-azure*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gcp-edge*
ubuntu/linux-gke-4.15*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-fips<4.15.0-2056.58
4.15.0-2056.58
ubuntu/linux-azure-fips<4.15.0-2038.42
4.15.0-2038.42
ubuntu/linux-fips<4.15.0-1072.81
4.15.0-1072.81
ubuntu/linux-gcp-fips<4.15.0-2021.23
4.15.0-2021.23
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-90.101
5.4.0-90.101
ubuntu/linux-aws<5.4.0-1059.62
5.4.0-1059.62
ubuntu/linux-azure<5.4.0-1063.66
5.4.0-1063.66
ubuntu/linux-azure-5.8<5.8.0-1043.46~20.04.1
5.8.0-1043.46~20.04.1
ubuntu/linux-bluefield<5.4.0-1021.24
5.4.0-1021.24
ubuntu/linux-gcp<5.4.0-1057.61
5.4.0-1057.61
ubuntu/linux-gke<5.4.0-1055.58
5.4.0-1055.58
ubuntu/linux-gkeop<5.4.0-1026.27
5.4.0-1026.27
ubuntu/linux-ibm<5.4.0-1007.8
5.4.0-1007.8
ubuntu/linux-kvm<5.4.0-1049.51
5.4.0-1049.51
ubuntu/linux-oracle<5.4.0-1057.61
5.4.0-1057.61
ubuntu/linux-raspi<5.4.0-1046.50
5.4.0-1046.50
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-fde-5.15<5.15.0-1114.123~20.04.1
5.15.0-1114.123~20.04.1
ubuntu/linux-gcp-5.8*
ubuntu/linux-hwe-5.8*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.8*
ubuntu/linux-aws-fips<5.4.0-1069.73+fips2
5.4.0-1069.73+fips2
ubuntu/linux-azure-fips<5.4.0-1073.76+fips1
5.4.0-1073.76+fips1
ubuntu/linux-fips<5.4.0-1036.42
5.4.0-1036.42
ubuntu/linux-gcp-fips<5.4.0-1067.71~20.04.1
5.4.0-1067.71~20.04.1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-realtime*
ubuntu/linux-raspi-realtime*
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 4.4.0-1102.107
  2. Upgrade

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

    Fixed in 4.15.0-1126.139~14.04.1
  3. Upgrade

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

    Fixed in 4.4.0-222.255~14.04.1
  4. Upgrade

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

    Fixed in 4.4.0-222.255
  5. Upgrade

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

    Fixed in 4.4.0-1138.152
  6. Upgrade

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

    Fixed in 4.15.0-1115.122~16.04.1
  7. Upgrade

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

    Fixed in 4.15.0-1126.139~16.04.1
  8. Upgrade

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

    Fixed in 4.15.0-1111.125~16.04.1
  9. Upgrade

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

    Fixed in 4.15.0-162.170~16.04.1
  10. Upgrade

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

    Fixed in 4.4.0-1103.112
  11. Upgrade

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

    Fixed in 4.15.0-1083.91~16.04.1
  12. Upgrade

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

    Fixed in 4.4.0-1072.78
  13. Upgrade

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

    Fixed in 4.15.0-162.170
  14. Upgrade

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

    Fixed in 4.15.0-1115.122
  15. Upgrade

    Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1059.62~18.04.1
  16. Upgrade

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

    Fixed in 4.15.0-1126.139
  17. Upgrade

    Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1063.66~18.04.1
  18. Upgrade

    Upgrade ubuntu/linux-dell300x to a version that resolves this vulnerability.

    Fixed in 4.15.0-1030.35
  19. Upgrade

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

    Fixed in 4.15.0-1111.125
  20. Upgrade

    Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1057.61~18.04.1
  21. Upgrade

    Upgrade ubuntu/linux-gke-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1055.58~18.04.1
  22. Upgrade

    Upgrade ubuntu/linux-gkeop-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1026.27~18.04.1
  23. Upgrade

    Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-90.101~18.04.1
  24. Upgrade

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

    Fixed in 4.15.0-1102.104
  25. Upgrade

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

    Fixed in 4.15.0-1083.91
  26. Upgrade

    Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1057.61~18.04.1
  27. Upgrade

    Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1046.50~18.04.1
  28. Upgrade

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

    Fixed in 4.15.0-1098.104
  29. Upgrade

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

    Fixed in 4.15.0-1115.124
  30. Upgrade

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

    Fixed in 4.15.0-2056.58
  31. Upgrade

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

    Fixed in 4.15.0-2038.42
  32. Upgrade

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

    Fixed in 4.15.0-1072.81
  33. Upgrade

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

    Fixed in 4.15.0-2021.23
  34. Upgrade

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

    Fixed in 5.4.0-90.101
  35. Upgrade

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

    Fixed in 5.4.0-1059.62
  36. Upgrade

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

    Fixed in 5.4.0-1063.66
  37. Upgrade

    Upgrade ubuntu/linux-azure-5.8 to a version that resolves this vulnerability.

    Fixed in 5.8.0-1043.46~20.04.1
  38. Upgrade

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

    Fixed in 5.4.0-1021.24
  39. Upgrade

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

    Fixed in 5.4.0-1057.61
  40. Upgrade

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

    Fixed in 5.4.0-1055.58
  41. Upgrade

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

    Fixed in 5.4.0-1026.27
  42. Upgrade

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

    Fixed in 5.4.0-1007.8
  43. Upgrade

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

    Fixed in 5.4.0-1049.51
  44. Upgrade

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

    Fixed in 5.4.0-1057.61
  45. Upgrade

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

    Fixed in 5.4.0-1046.50
  46. 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
  47. Upgrade

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

    Fixed in 5.4.0-1069.73+fips2
  48. Upgrade

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

    Fixed in 5.4.0-1073.76+fips1
  49. Upgrade

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

    Fixed in 5.4.0-1036.42
  50. Upgrade

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

    Fixed in 5.4.0-1067.71~20.04.1

Event History

Dec 8, 2019
CVE Published
via MITRE·01:14 AM
Data Sourced
via MITRE·01:14 AM
Description
Data Sourced
via OSV·02:15 AM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2019-19449?

CVE-2019-19449 has been classified as a high-severity vulnerability due to its potential for causing slab-out-of-bounds read access.

2

How do I fix CVE-2019-19449?

To mitigate CVE-2019-19449, upgrade the Linux kernel to a version later than 5.0.21 that addresses this vulnerability.

3

What versions of Linux are affected by CVE-2019-19449?

CVE-2019-19449 specifically affects the Linux kernel version 5.0.21.

4

What can be exploited in CVE-2019-19449?

CVE-2019-19449 can be exploited through crafted f2fs filesystem images leading to potential memory vulnerabilities.

5

Where in the code is CVE-2019-19449 located?

CVE-2019-19449 is found in the f2fs_build_segment_manager function within fs/f2fs/segment.c.

Company

Resources

Contact

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