USN-4917-1: Linux kernel vulnerabilities

Published Apr 15, 2021
·
Updated

It was discovered that the overlayfs implementation in the Linux kernel did not properly validate the application of file system capabilities with respect to user namespaces. A local attacker could use this to gain elevated privileges. (CVE-2021-3493) Vincent Dehors discovered that the shiftfs file system in the Ubuntu Linux kernel did not properly handle faults in copyfromuser() when passing through ioctls to an underlying file system. A local attacker could use this to cause a denial of service (memory exhaustion) or execute arbitrary code. (CVE-2021-3492) Piotr Krysiuk discovered that the BPF JIT compiler for x86 in the Linux kernel did not properly validate computation of branch displacements in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-29154)

Affected Software

185 affected componentsFixes available
Ubuntu Linux kernel
All of the following
ubuntu/linux-image-5.8.0-1021-raspi<5.8.0-1021.24
5.8.0-1021.24
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.8.0-1021-raspi-nolpae<5.8.0-1021.24
5.8.0-1021.24
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.8.0-1024-kvm<5.8.0-1024.26
5.8.0-1024.26
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.8.0-1026-oracle<5.8.0-1026.27
5.8.0-1026.27
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.8.0-1028-gcp<5.8.0-1028.29
5.8.0-1028.29
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.8.0-1029-azure<5.8.0-1029.31
5.8.0-1029.31
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.8.0-1030-aws<5.8.0-1030.32
5.8.0-1030.32
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.8.0-50-generic<5.8.0-50.56
5.8.0-50.56
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.8.0-50-generic-64k<5.8.0-50.56
5.8.0-50.56
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.8.0-50-generic-lpae<5.8.0-50.56
5.8.0-50.56
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.8.0-50-lowlatency<5.8.0-50.56
5.8.0-50.56
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-aws<5.8.0.1030.32
5.8.0.1030.32
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-azure<5.8.0.1029.29
5.8.0.1029.29
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-gcp<5.8.0.1028.28
5.8.0.1028.28
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-generic<5.8.0.50.55
5.8.0.50.55
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-generic-64k<5.8.0.50.55
5.8.0.50.55
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-generic-lpae<5.8.0.50.55
5.8.0.50.55
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-gke<5.8.0.1028.28
5.8.0.1028.28
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-kvm<5.8.0.1024.26
5.8.0.1024.26
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-lowlatency<5.8.0.50.55
5.8.0.50.55
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-oem-20.04<5.8.0.50.55
5.8.0.50.55
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-oracle<5.8.0.1026.25
5.8.0.1026.25
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-raspi<5.8.0.1021.24
5.8.0.1021.24
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-raspi-nolpae<5.8.0.1021.24
5.8.0.1021.24
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-virtual<5.8.0.50.55
5.8.0.50.55
Ubuntu Ubuntu=20.10
All of the following
ubuntu/linux-image-5.10.0-1022-oem<5.10.0-1022.23
5.10.0-1022.23
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1014-gkeop<5.4.0-1014.15
5.4.0-1014.15
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1034-raspi<5.4.0-1034.37
5.4.0-1034.37
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1038-kvm<5.4.0-1038.39
5.4.0-1038.39
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1042-gcp<5.4.0-1042.45
5.4.0-1042.45
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1043-oracle<5.4.0-1043.46
5.4.0-1043.46
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1045-aws<5.4.0-1045.47
5.4.0-1045.47
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-1046-azure<5.4.0-1046.48
5.4.0-1046.48
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-72-generic<5.4.0-72.80
5.4.0-72.80
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-72-generic-lpae<5.4.0-72.80
5.4.0-72.80
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.4.0-72-lowlatency<5.4.0-72.80
5.4.0-72.80
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.8.0-50-generic<5.8.0-50.56~20.04.1
5.8.0-50.56~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.8.0-50-generic-64k<5.8.0-50.56~20.04.1
5.8.0-50.56~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.8.0-50-generic-lpae<5.8.0-50.56~20.04.1
5.8.0-50.56~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.8.0-50-lowlatency<5.8.0-50.56~20.04.1
5.8.0-50.56~20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-aws<5.4.0.1045.46
5.4.0.1045.46
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-azure<5.4.0.1046.44
5.4.0.1046.44
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-gcp<5.4.0.1042.51
5.4.0.1042.51
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic<5.4.0.72.75
5.4.0.72.75
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-64k-hwe-20.04<5.8.0.50.56~20.04.34
5.8.0.50.56~20.04.34
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-hwe-20.04<5.8.0.50.56~20.04.34
5.8.0.50.56~20.04.34
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-lpae<5.4.0.72.75
5.4.0.72.75
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-lpae-hwe-20.04<5.8.0.50.56~20.04.34
5.8.0.50.56~20.04.34
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-gkeop<5.4.0.1014.17
5.4.0.1014.17
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-gkeop-5.4<5.4.0.1014.17
5.4.0.1014.17
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-kvm<5.4.0.1038.36
5.4.0.1038.36
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-lowlatency<5.4.0.72.75
5.4.0.72.75
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-lowlatency-hwe-20.04<5.8.0.50.56~20.04.34
5.8.0.50.56~20.04.34
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oem<5.4.0.72.75
5.4.0.72.75
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oem-20.04b<5.10.0.1022.23
5.10.0.1022.23
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oem-osp1<5.4.0.72.75
5.4.0.72.75
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oracle<5.4.0.1043.40
5.4.0.1043.40
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-raspi<5.4.0.1034.69
5.4.0.1034.69
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-raspi2<5.4.0.1034.69
5.4.0.1034.69
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-virtual<5.4.0.72.75
5.4.0.72.75
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-virtual-hwe-20.04<5.8.0.50.56~20.04.34
5.8.0.50.56~20.04.34
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.3.0-1039-raspi2<5.3.0-1039.41
5.3.0-1039.41
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-1042-gke<5.3.0-1042.45
5.3.0-1042.45
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-73-generic<5.3.0-73.69
5.3.0-73.69
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-73-lowlatency<5.3.0-73.69
5.3.0-73.69
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-1014-gkeop<5.4.0-1014.15~18.04.1
5.4.0-1014.15~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-1034-raspi<5.4.0-1034.37~18.04.1
5.4.0-1034.37~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-1042-gcp<5.4.0-1042.45~18.04.1
5.4.0-1042.45~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-1042-gke<5.4.0-1042.44~18.04.1
5.4.0-1042.44~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-1043-oracle<5.4.0-1043.46~18.04.1
5.4.0-1043.46~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-1045-aws<5.4.0-1045.47~18.04.1
5.4.0-1045.47~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-1046-azure<5.4.0-1046.48~18.04.1
5.4.0-1046.48~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-72-generic<5.4.0-72.80~18.04.1
5.4.0-72.80~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-72-generic-lpae<5.4.0-72.80~18.04.1
5.4.0-72.80~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.4.0-72-lowlatency<5.4.0-72.80~18.04.1
5.4.0-72.80~18.04.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-aws<5.4.0.1045.27
5.4.0.1045.27
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-azure<5.4.0.1046.25
5.4.0.1046.25
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gcp<5.4.0.1042.29
5.4.0.1042.29
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-generic-hwe-18.04<5.4.0.72.80~18.04.65
5.4.0.72.80~18.04.65
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-generic-lpae-hwe-18.04<5.4.0.72.80~18.04.65
5.4.0.72.80~18.04.65
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gke-5.3<5.3.0.1042.25
5.3.0.1042.25
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gke-5.4<5.4.0.1042.44~18.04.8
5.4.0.1042.44~18.04.8
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gkeop-5.3<5.3.0.73.130
5.3.0.73.130
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gkeop-5.4<5.4.0.1014.15~18.04.15
5.4.0.1014.15~18.04.15
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-lowlatency-hwe-18.04<5.4.0.72.80~18.04.65
5.4.0.72.80~18.04.65
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-oem<5.4.0.72.80~18.04.65
5.4.0.72.80~18.04.65
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-oem-osp1<5.4.0.72.80~18.04.65
5.4.0.72.80~18.04.65
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-oracle<5.4.0.1043.46~18.04.25
5.4.0.1043.46~18.04.25
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-raspi-hwe-18.04<5.4.0.1034.36
5.4.0.1034.36
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-raspi2-hwe-18.04<5.3.0.1039.28
5.3.0.1039.28
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-snapdragon-hwe-18.04<5.4.0.72.80~18.04.65
5.4.0.72.80~18.04.65
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-virtual-hwe-18.04<5.4.0.72.80~18.04.65
5.4.0.72.80~18.04.65
Ubuntu Ubuntu=18.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-1021-raspi to a version that resolves this vulnerability.

    Fixed in 5.8.0-1021.24
  2. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-1021-raspi-nolpae to a version that resolves this vulnerability.

    Fixed in 5.8.0-1021.24
  3. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-1024-kvm to a version that resolves this vulnerability.

    Fixed in 5.8.0-1024.26
  4. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-1026-oracle to a version that resolves this vulnerability.

    Fixed in 5.8.0-1026.27
  5. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-1028-gcp to a version that resolves this vulnerability.

    Fixed in 5.8.0-1028.29
  6. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-1029-azure to a version that resolves this vulnerability.

    Fixed in 5.8.0-1029.31
  7. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-1030-aws to a version that resolves this vulnerability.

    Fixed in 5.8.0-1030.32
  8. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-50-generic to a version that resolves this vulnerability.

    Fixed in 5.8.0-50.56
  9. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-50-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.8.0-50.56
  10. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-50-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.8.0-50.56
  11. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-50-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.8.0-50.56
  12. Upgrade

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

    Fixed in 5.8.0.1030.32
  13. Upgrade

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

    Fixed in 5.8.0.1029.29
  14. Upgrade

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

    Fixed in 5.8.0.1028.28
  15. Upgrade

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

    Fixed in 5.8.0.50.55
  16. Upgrade

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

    Fixed in 5.8.0.50.55
  17. Upgrade

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

    Fixed in 5.8.0.50.55
  18. Upgrade

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

    Fixed in 5.8.0.1028.28
  19. Upgrade

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

    Fixed in 5.8.0.1024.26
  20. Upgrade

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

    Fixed in 5.8.0.50.55
  21. Upgrade

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

    Fixed in 5.8.0.50.55
  22. Upgrade

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

    Fixed in 5.8.0.1026.25
  23. Upgrade

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

    Fixed in 5.8.0.1021.24
  24. Upgrade

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

    Fixed in 5.8.0.1021.24
  25. Upgrade

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

    Fixed in 5.8.0.50.55
  26. Upgrade

    Upgrade ubuntu/linux-image-5.10.0-1022-oem to a version that resolves this vulnerability.

    Fixed in 5.10.0-1022.23
  27. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1014-gkeop to a version that resolves this vulnerability.

    Fixed in 5.4.0-1014.15
  28. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1034-raspi to a version that resolves this vulnerability.

    Fixed in 5.4.0-1034.37
  29. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1038-kvm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1038.39
  30. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1042-gcp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1042.45
  31. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1043-oracle to a version that resolves this vulnerability.

    Fixed in 5.4.0-1043.46
  32. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1045-aws to a version that resolves this vulnerability.

    Fixed in 5.4.0-1045.47
  33. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1046-azure to a version that resolves this vulnerability.

    Fixed in 5.4.0-1046.48
  34. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-72-generic to a version that resolves this vulnerability.

    Fixed in 5.4.0-72.80
  35. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-72-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.4.0-72.80
  36. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-72-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.4.0-72.80
  37. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-50-generic to a version that resolves this vulnerability.

    Fixed in 5.8.0-50.56~20.04.1
  38. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-50-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.8.0-50.56~20.04.1
  39. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-50-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.8.0-50.56~20.04.1
  40. Upgrade

    Upgrade ubuntu/linux-image-5.8.0-50-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.8.0-50.56~20.04.1
  41. Upgrade

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

    Fixed in 5.4.0.1045.46
  42. Upgrade

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

    Fixed in 5.4.0.1046.44
  43. Upgrade

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

    Fixed in 5.4.0.1042.51
  44. Upgrade

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

    Fixed in 5.4.0.72.75
  45. Upgrade

    Upgrade ubuntu/linux-image-generic-64k-hwe-20.04 to a version that resolves this vulnerability.

    Fixed in 5.8.0.50.56~20.04.34
  46. Upgrade

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

    Fixed in 5.8.0.50.56~20.04.34
  47. Upgrade

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

    Fixed in 5.4.0.72.75
  48. Upgrade

    Upgrade ubuntu/linux-image-generic-lpae-hwe-20.04 to a version that resolves this vulnerability.

    Fixed in 5.8.0.50.56~20.04.34
  49. Upgrade

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

    Fixed in 5.4.0.1014.17
  50. Upgrade

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

    Fixed in 5.4.0.1014.17
  51. Upgrade

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

    Fixed in 5.4.0.1038.36
  52. Upgrade

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

    Fixed in 5.4.0.72.75
  53. Upgrade

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

    Fixed in 5.8.0.50.56~20.04.34
  54. Upgrade

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

    Fixed in 5.4.0.72.75
  55. Upgrade

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

    Fixed in 5.10.0.1022.23
  56. Upgrade

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

    Fixed in 5.4.0.72.75
  57. Upgrade

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

    Fixed in 5.4.0.1043.40
  58. Upgrade

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

    Fixed in 5.4.0.1034.69
  59. Upgrade

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

    Fixed in 5.4.0.1034.69
  60. Upgrade

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

    Fixed in 5.4.0.72.75
  61. Upgrade

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

    Fixed in 5.8.0.50.56~20.04.34
  62. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-1039-raspi2 to a version that resolves this vulnerability.

    Fixed in 5.3.0-1039.41
  63. Upgrade

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

    Fixed in 5.3.0-1042.45
  64. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-73-generic to a version that resolves this vulnerability.

    Fixed in 5.3.0-73.69
  65. Upgrade

    Upgrade ubuntu/linux-image-5.3.0-73-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.3.0-73.69
  66. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1014-gkeop to a version that resolves this vulnerability.

    Fixed in 5.4.0-1014.15~18.04.1
  67. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1034-raspi to a version that resolves this vulnerability.

    Fixed in 5.4.0-1034.37~18.04.1
  68. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1042-gcp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1042.45~18.04.1
  69. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1042-gke to a version that resolves this vulnerability.

    Fixed in 5.4.0-1042.44~18.04.1
  70. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1043-oracle to a version that resolves this vulnerability.

    Fixed in 5.4.0-1043.46~18.04.1
  71. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1045-aws to a version that resolves this vulnerability.

    Fixed in 5.4.0-1045.47~18.04.1
  72. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-1046-azure to a version that resolves this vulnerability.

    Fixed in 5.4.0-1046.48~18.04.1
  73. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-72-generic to a version that resolves this vulnerability.

    Fixed in 5.4.0-72.80~18.04.1
  74. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-72-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.4.0-72.80~18.04.1
  75. Upgrade

    Upgrade ubuntu/linux-image-5.4.0-72-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.4.0-72.80~18.04.1
  76. Upgrade

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

    Fixed in 5.4.0.1045.27
  77. Upgrade

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

    Fixed in 5.4.0.1046.25
  78. Upgrade

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

    Fixed in 5.4.0.1042.29
  79. Upgrade

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

    Fixed in 5.4.0.72.80~18.04.65
  80. Upgrade

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

    Fixed in 5.4.0.72.80~18.04.65
  81. Upgrade

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

    Fixed in 5.3.0.1042.25
  82. Upgrade

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

    Fixed in 5.4.0.1042.44~18.04.8
  83. Upgrade

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

    Fixed in 5.3.0.73.130
  84. Upgrade

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

    Fixed in 5.4.0.1014.15~18.04.15
  85. Upgrade

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

    Fixed in 5.4.0.72.80~18.04.65
  86. Upgrade

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

    Fixed in 5.4.0.72.80~18.04.65
  87. Upgrade

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

    Fixed in 5.4.0.72.80~18.04.65
  88. Upgrade

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

    Fixed in 5.4.0.1043.46~18.04.25
  89. Upgrade

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

    Fixed in 5.4.0.1034.36
  90. Upgrade

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

    Fixed in 5.3.0.1039.28
  91. Upgrade

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

    Fixed in 5.4.0.72.80~18.04.65
  92. Upgrade

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

    Fixed in 5.4.0.72.80~18.04.65

Event History

Apr 15, 2021
Advisory Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-4917-1?

The severity of USN-4917-1 is classified as high due to the potential for local attackers to gain elevated privileges.

2

How do I fix USN-4917-1?

To fix USN-4917-1, upgrade to the patched kernel versions as specified in the advisory.

3

Which versions of Ubuntu are affected by USN-4917-1?

Ubuntu 20.10 is affected by USN-4917-1 vulnerabilities.

4

What are the potential impacts of USN-4917-1?

The potential impacts of USN-4917-1 include unauthorized privilege escalation by local attackers.

5

What CVEs are associated with USN-4917-1?

USN-4917-1 is associated with CVE-2021-3493 among others.

Company

Resources

Contact

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