USN-5014-1: Linux kernel vulnerability

Published Jul 20, 2021
·
Updated

It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to signed integer conversion error. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code.

Affected Software

140 affected componentsFixes available
All of the following
ubuntu/linux-image-5.11.0-1012-azure<5.11.0-1012.13
5.11.0-1012.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1012-kvm<5.11.0-1012.13
5.11.0-1012.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1013-oracle<5.11.0-1013.14
5.11.0-1013.14
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1014-aws<5.11.0-1014.15
5.11.0-1014.15
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1014-gcp<5.11.0-1014.16
5.11.0-1014.16
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1015-raspi<5.11.0-1015.16
5.11.0-1015.16
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1015-raspi-nolpae<5.11.0-1015.16
5.11.0-1015.16
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-25-generic<5.11.0-25.27
5.11.0-25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-25-generic-64k<5.11.0-25.27
5.11.0-25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-25-generic-lpae<5.11.0-25.27
5.11.0-25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-25-lowlatency<5.11.0-25.27
5.11.0-25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-aws<5.11.0.1014.15
5.11.0.1014.15
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-azure<5.11.0.1012.13
5.11.0.1012.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-gcp<5.11.0.1014.14
5.11.0.1014.14
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-generic<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-generic-64k<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-generic-lpae<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-gke<5.11.0.1014.14
5.11.0.1014.14
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-kvm<5.11.0.1012.13
5.11.0.1012.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-lowlatency<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-oem-20.04<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-oracle<5.11.0.1013.14
5.11.0.1013.14
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-raspi<5.11.0.1015.13
5.11.0.1015.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-raspi-nolpae<5.11.0.1015.13
5.11.0.1015.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-virtual<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.3.0-1042-raspi2<5.3.0-1042.44
5.3.0-1042.44
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-1045-gke<5.3.0-1045.48
5.3.0-1045.48
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-76-generic<5.3.0-76.72
5.3.0-76.72
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-76-lowlatency<5.3.0-76.72
5.3.0-76.72
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gke-5.3<5.3.0.1045.28
5.3.0.1045.28
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gkeop-5.3<5.3.0.76.133
5.3.0.76.133
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-raspi2-hwe-18.04<5.3.0.1042.31
5.3.0.1042.31
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.4.0-1095-kvm<4.4.0-1095.104
4.4.0-1095.104
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.4.0-1130-aws<4.4.0-1130.144
4.4.0-1130.144
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.4.0-212-generic<4.4.0-212.244
4.4.0-212.244
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.4.0-212-lowlatency<4.4.0-212.244
4.4.0-212.244
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-aws<4.4.0.1130.135
4.4.0.1130.135
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-generic<4.4.0.212.219
4.4.0.212.219
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-kvm<4.4.0.1095.93
4.4.0.1095.93
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-lowlatency<4.4.0.212.219
4.4.0.212.219
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-virtual<4.4.0.212.219
4.4.0.212.219
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-3.13.0-186-generic<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-generic-lpae<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-lowlatency<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-powerpc-e500<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-powerpc-e500mc<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-powerpc-smp<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-powerpc64-emb<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-powerpc64-smp<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-4.4.0-1094-aws<4.4.0-1094.99
4.4.0-1094.99
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-4.4.0-212-generic<4.4.0-212.244~14.04.1
4.4.0-212.244~14.04.1
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-4.4.0-212-lowlatency<4.4.0-212.244~14.04.1
4.4.0-212.244~14.04.1
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-aws<4.4.0.1094.92
4.4.0.1094.92
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-generic<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-generic-lpae<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-generic-lts-xenial<4.4.0.212.185
4.4.0.212.185
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-generic-pae<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-highbank<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-lowlatency<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-lowlatency-lts-xenial<4.4.0.212.185
4.4.0.212.185
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-lowlatency-pae<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-omap<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-powerpc-e500<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-powerpc-e500mc<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-powerpc-smp<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-powerpc64-emb<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-powerpc64-smp<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-server<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-virtual<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-virtual-lts-xenial<4.4.0.212.185
4.4.0.212.185
Ubuntu Ubuntu=14.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1012-azure to a version that resolves this vulnerability.

    Fixed in 5.11.0-1012.13
  2. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1012-kvm to a version that resolves this vulnerability.

    Fixed in 5.11.0-1012.13
  3. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1013-oracle to a version that resolves this vulnerability.

    Fixed in 5.11.0-1013.14
  4. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1014-aws to a version that resolves this vulnerability.

    Fixed in 5.11.0-1014.15
  5. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1014-gcp to a version that resolves this vulnerability.

    Fixed in 5.11.0-1014.16
  6. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1015-raspi to a version that resolves this vulnerability.

    Fixed in 5.11.0-1015.16
  7. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-1015-raspi-nolpae to a version that resolves this vulnerability.

    Fixed in 5.11.0-1015.16
  8. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-25-generic to a version that resolves this vulnerability.

    Fixed in 5.11.0-25.27
  9. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-25-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.11.0-25.27
  10. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-25-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.11.0-25.27
  11. Upgrade

    Upgrade ubuntu/linux-image-5.11.0-25-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.11.0-25.27
  12. Upgrade

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

    Fixed in 5.11.0.1014.15
  13. Upgrade

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

    Fixed in 5.11.0.1012.13
  14. Upgrade

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

    Fixed in 5.11.0.1014.14
  15. Upgrade

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

    Fixed in 5.11.0.25.27
  16. Upgrade

    Upgrade ubuntu/linux-image-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.11.0.25.27
  17. Upgrade

    Upgrade ubuntu/linux-image-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.11.0.25.27
  18. Upgrade

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

    Fixed in 5.11.0.1014.14
  19. Upgrade

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

    Fixed in 5.11.0.1012.13
  20. Upgrade

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

    Fixed in 5.11.0.25.27
  21. Upgrade

    Upgrade ubuntu/linux-image-oem-20.04 to a version that resolves this vulnerability.

    Fixed in 5.11.0.25.27
  22. Upgrade

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

    Fixed in 5.11.0.1013.14
  23. Upgrade

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

    Fixed in 5.11.0.1015.13
  24. Upgrade

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

    Fixed in 5.11.0.1015.13
  25. Upgrade

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

    Fixed in 5.11.0.25.27
  26. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1042-raspi2 to a version that resolves this vulnerability.

    Fixed in 5.3.0-1042.44
  27. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1045-gke to a version that resolves this vulnerability.

    Fixed in 5.3.0-1045.48
  28. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-76-generic to a version that resolves this vulnerability.

    Fixed in 5.3.0-76.72
  29. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-76-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.3.0-76.72
  30. Upgrade

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

    Fixed in 5.3.0.1045.28
  31. Upgrade

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

    Fixed in 5.3.0.76.133
  32. Upgrade

    Upgrade ubuntu/linux-image-raspi2-hwe-18.04 to a version that resolves this vulnerability.

    Fixed in 5.3.0.1042.31
  33. Upgrade

    Upgrade ubuntu/linux-image-4.4.0-1095-kvm to a version that resolves this vulnerability.

    Fixed in 4.4.0-1095.104
  34. Upgrade

    Upgrade ubuntu/linux-image-4.4.0-1130-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1130.144
  35. Upgrade

    Upgrade ubuntu/linux-image-4.4.0-212-generic to a version that resolves this vulnerability.

    Fixed in 4.4.0-212.244
  36. Upgrade

    Upgrade ubuntu/linux-image-4.4.0-212-lowlatency to a version that resolves this vulnerability.

    Fixed in 4.4.0-212.244
  37. Upgrade

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

    Fixed in 4.4.0.1130.135
  38. Upgrade

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

    Fixed in 4.4.0.212.219
  39. Upgrade

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

    Fixed in 4.4.0.1095.93
  40. Upgrade

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

    Fixed in 4.4.0.212.219
  41. Upgrade

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

    Fixed in 4.4.0.212.219
  42. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-186-generic to a version that resolves this vulnerability.

    Fixed in 3.13.0-186.237
  43. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-186-generic-lpae to a version that resolves this vulnerability.

    Fixed in 3.13.0-186.237
  44. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-186-lowlatency to a version that resolves this vulnerability.

    Fixed in 3.13.0-186.237
  45. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-186-powerpc-e500 to a version that resolves this vulnerability.

    Fixed in 3.13.0-186.237
  46. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-186-powerpc-e500mc to a version that resolves this vulnerability.

    Fixed in 3.13.0-186.237
  47. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-186-powerpc-smp to a version that resolves this vulnerability.

    Fixed in 3.13.0-186.237
  48. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-186-powerpc64-emb to a version that resolves this vulnerability.

    Fixed in 3.13.0-186.237
  49. Upgrade

    Upgrade ubuntu/linux-image-3.13.0-186-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 3.13.0-186.237
  50. Upgrade

    Upgrade ubuntu/linux-image-4.4.0-1094-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1094.99
  51. Upgrade

    Upgrade ubuntu/linux-image-4.4.0-212-generic to a version that resolves this vulnerability.

    Fixed in 4.4.0-212.244~14.04.1
  52. Upgrade

    Upgrade ubuntu/linux-image-4.4.0-212-lowlatency to a version that resolves this vulnerability.

    Fixed in 4.4.0-212.244~14.04.1
  53. Upgrade

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

    Fixed in 4.4.0.1094.92
  54. Upgrade

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

    Fixed in 3.13.0.186.195
  55. Upgrade

    Upgrade ubuntu/linux-image-generic-lpae to a version that resolves this vulnerability.

    Fixed in 3.13.0.186.195
  56. Upgrade

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

    Fixed in 4.4.0.212.185
  57. Upgrade

    Upgrade ubuntu/linux-image-generic-pae to a version that resolves this vulnerability.

    Fixed in 3.13.0.186.195
  58. Upgrade

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

    Fixed in 3.13.0.186.195
  59. Upgrade

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

    Fixed in 3.13.0.186.195
  60. Upgrade

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

    Fixed in 4.4.0.212.185
  61. Upgrade

    Upgrade ubuntu/linux-image-lowlatency-pae to a version that resolves this vulnerability.

    Fixed in 3.13.0.186.195
  62. Upgrade

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

    Fixed in 3.13.0.186.195
  63. Upgrade

    Upgrade ubuntu/linux-image-powerpc-e500 to a version that resolves this vulnerability.

    Fixed in 3.13.0.186.195
  64. Upgrade

    Upgrade ubuntu/linux-image-powerpc-e500mc to a version that resolves this vulnerability.

    Fixed in 3.13.0.186.195
  65. Upgrade

    Upgrade ubuntu/linux-image-powerpc-smp to a version that resolves this vulnerability.

    Fixed in 3.13.0.186.195
  66. Upgrade

    Upgrade ubuntu/linux-image-powerpc64-emb to a version that resolves this vulnerability.

    Fixed in 3.13.0.186.195
  67. Upgrade

    Upgrade ubuntu/linux-image-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 3.13.0.186.195
  68. Upgrade

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

    Fixed in 3.13.0.186.195
  69. Upgrade

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

    Fixed in 3.13.0.186.195
  70. Upgrade

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

    Fixed in 4.4.0.212.185

Event History

Jul 20, 2021
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-5014-1?

The severity of USN-5014-1 is considered high due to the potential for denial of service and arbitrary code execution.

2

How do I fix USN-5014-1?

To fix USN-5014-1, upgrade to the recommended kernel versions specified in the advisory, such as linux-image-5.11.0-1012.13.

3

Who is affected by USN-5014-1?

USN-5014-1 affects local users on Ubuntu 21.04 running specific kernel versions that have the vulnerability.

4

What are the potential impacts of USN-5014-1?

The potential impacts of USN-5014-1 include system crashes and the execution of arbitrary code by local attackers.

5

Is there a public exploit for USN-5014-1?

As of now, there is no publicly known exploit for USN-5014-1, but the vulnerability's existence means it could be targeted.

Company

Resources

Contact

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