USN-8388-1: Linux kernel vulnerabilities

Published Jun 4, 2026
·
Updated

It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processing paged fragments. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43284, CVE-2026-43500) It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43503, CVE-2026-46300) Qualys discovered that a race condition existed in the ptrace subsystem of the Linux kernel when privileged processes are exiting. An unprivileged local attacker could use this issue to expose sensitive information. (CVE-2026-46333) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:

Affected Software

207 affected componentsFixes available
Canonical Ubuntu Linux kernel
All of the following
ubuntu/linux-image-5.15.0-1050-nvidia-tegra-igx<5.15.0-1050.50
5.15.0-1050.50
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1050-nvidia-tegra-igx-rt<5.15.0-1050.50
5.15.0-1050.50
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1061-nvidia-tegra<5.15.0-1061.61
5.15.0-1061.61
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1061-nvidia-tegra-rt<5.15.0-1061.61
5.15.0-1061.61
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1092-gkeop<5.15.0-1092.100
5.15.0-1092.100
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1101-intel-iot-realtime<Real-time
Real-time
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1101-kvm<5.15.0-1101.106
5.15.0-1101.106
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1103-ibm<5.15.0-1103.106
5.15.0-1103.106
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1103-raspi<5.15.0-1103.106
5.15.0-1103.106
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1104-intel-iotg<5.15.0-1104.110
5.15.0-1104.110
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1104-nvidia<5.15.0-1104.105
5.15.0-1104.105
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1104-nvidia-lowlatency<5.15.0-1104.105
5.15.0-1104.105
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1105-gke<5.15.0-1105.111
5.15.0-1105.111
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1106-oracle<5.15.0-1106.112
5.15.0-1106.112
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1108-realtime<Real-time
Real-time
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1109-aws<5.15.0-1109.116
5.15.0-1109.116
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1109-aws-64k<5.15.0-1109.116
5.15.0-1109.116
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1109-aws-fips<FIPS-140
FIPS-140
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1109-gcp<5.15.0-1109.118
5.15.0-1109.118
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1109-gcp-fips<FIPS-140
FIPS-140
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-181-fips<FIPS-140
FIPS-140
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-181-generic<5.15.0-181.191
5.15.0-181.191
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-181-generic-64k<5.15.0-181.191
5.15.0-181.191
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-181-generic-lpae<5.15.0-181.191
5.15.0-181.191
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-aws-5.15<5.15.0.1109.112
5.15.0.1109.112
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-aws-64k-5.15<5.15.0.1109.112
5.15.0.1109.112
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-aws-64k-lts-22.04<5.15.0.1109.112
5.15.0.1109.112
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-aws-fips<FIPS-140
FIPS-140
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-aws-fips-5.15<FIPS-140
FIPS-140
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-aws-lts-22.04<5.15.0.1109.112
5.15.0.1109.112
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-fips<FIPS-140
FIPS-140
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-fips-5.15<FIPS-140
FIPS-140
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-gcp-5.15<5.15.0.1109.105
5.15.0.1109.105
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-gcp-fips<FIPS-140
FIPS-140
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-gcp-fips-5.15<FIPS-140
FIPS-140
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-gcp-lts-22.04<5.15.0.1109.105
5.15.0.1109.105
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic<5.15.0.181.164
5.15.0.181.164
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-5.15<5.15.0.181.164
5.15.0.181.164
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-64k<5.15.0.181.164
5.15.0.181.164
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-64k-5.15<5.15.0.181.164
5.15.0.181.164
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-lpae<5.15.0.181.164
5.15.0.181.164
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-generic-lpae-5.15<5.15.0.181.164
5.15.0.181.164
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-gke<5.15.0.1105.104
5.15.0.1105.104
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-gke-5.15<5.15.0.1105.104
5.15.0.1105.104
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-gkeop<5.15.0.1092.91
5.15.0.1092.91
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-gkeop-5.15<5.15.0.1092.91
5.15.0.1092.91
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-ibm<5.15.0.1103.99
5.15.0.1103.99
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-ibm-5.15<5.15.0.1103.99
5.15.0.1103.99
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-intel-iot-realtime<Real-time
Real-time
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-intel-iot-realtime-5.15<Real-time
Real-time
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-intel-iotg<5.15.0.1104.103
5.15.0.1104.103
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-intel-iotg-5.15<5.15.0.1104.103
5.15.0.1104.103
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-kvm<5.15.0.1101.97
5.15.0.1101.97
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-kvm-5.15<5.15.0.1101.97
5.15.0.1101.97
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia<5.15.0.1104.104
5.15.0.1104.104
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-5.15<5.15.0.1104.104
5.15.0.1104.104
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-lowlatency<5.15.0.1104.104
5.15.0.1104.104
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-lowlatency-5.15<5.15.0.1104.104
5.15.0.1104.104
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-tegra<5.15.0.1061.61
5.15.0.1061.61
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-tegra-5.15<5.15.0.1061.61
5.15.0.1061.61
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-tegra-igx<5.15.0.1050.52
5.15.0.1050.52
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-tegra-igx-5.15<5.15.0.1050.52
5.15.0.1050.52
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-tegra-igx-rt<5.15.0.1050.52
5.15.0.1050.52
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-tegra-igx-rt-5.15<5.15.0.1050.52
5.15.0.1050.52
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-tegra-rt<5.15.0.1061.61
5.15.0.1061.61
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-nvidia-tegra-rt-5.15<5.15.0.1061.61
5.15.0.1061.61
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-oem-20.04<5.15.0.181.164
5.15.0.181.164
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-oracle-5.15<5.15.0.1106.102
5.15.0.1106.102
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-oracle-lts-22.04<5.15.0.1106.102
5.15.0.1106.102
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-raspi<5.15.0.1103.101
5.15.0.1103.101
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-raspi-5.15<5.15.0.1103.101
5.15.0.1103.101
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-raspi-nolpae<5.15.0.1103.101
5.15.0.1103.101
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-realtime<Real-time
Real-time
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-realtime-5.15<Real-time
Real-time
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-virtual<5.15.0.181.164
5.15.0.181.164
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-virtual-5.15<5.15.0.181.164
5.15.0.181.164
Ubuntu Ubuntu=22.04
All of the following
ubuntu/linux-image-5.15.0-1061-nvidia-tegra<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.15.0-1061-nvidia-tegra-rt<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.15.0-1103-ibm<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.15.0-1109-aws<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.15.0-1109-gcp<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.15.0-181-generic<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.15.0-181-generic-64k<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.15.0-181-generic-lpae<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-aws<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-aws-5.15<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-gcp<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-gcp-5.15<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-5.15<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-64k-5.15<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-64k-hwe-20.04<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-hwe-20.04<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-lpae-5.15<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-generic-lpae-hwe-20.04<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-ibm<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-ibm-5.15<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-nvidia-tegra<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-nvidia-tegra-rt<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-nvidia-tegra-rt-5.15<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oem-20.04<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oem-20.04b<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oem-20.04c<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-virtual-5.15<Ubuntu Pro
Ubuntu Pro
Ubuntu Ubuntu=20.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1050-nvidia-tegra-igx to a version that resolves this vulnerability.

    Fixed in 5.15.0-1050.50
  2. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1050-nvidia-tegra-igx-rt to a version that resolves this vulnerability.

    Fixed in 5.15.0-1050.50
  3. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1061-nvidia-tegra to a version that resolves this vulnerability.

    Fixed in 5.15.0-1061.61
  4. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1061-nvidia-tegra-rt to a version that resolves this vulnerability.

    Fixed in 5.15.0-1061.61
  5. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1092-gkeop to a version that resolves this vulnerability.

    Fixed in 5.15.0-1092.100
  6. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1101-intel-iot-realtime to a version that resolves this vulnerability.

    Fixed in Real-time
  7. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1101-kvm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1101.106
  8. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1103-ibm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1103.106
  9. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1103-raspi to a version that resolves this vulnerability.

    Fixed in 5.15.0-1103.106
  10. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1104-intel-iotg to a version that resolves this vulnerability.

    Fixed in 5.15.0-1104.110
  11. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1104-nvidia to a version that resolves this vulnerability.

    Fixed in 5.15.0-1104.105
  12. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1104-nvidia-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.15.0-1104.105
  13. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1105-gke to a version that resolves this vulnerability.

    Fixed in 5.15.0-1105.111
  14. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1106-oracle to a version that resolves this vulnerability.

    Fixed in 5.15.0-1106.112
  15. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1108-realtime to a version that resolves this vulnerability.

    Fixed in Real-time
  16. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1109-aws to a version that resolves this vulnerability.

    Fixed in 5.15.0-1109.116
  17. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1109-aws-64k to a version that resolves this vulnerability.

    Fixed in 5.15.0-1109.116
  18. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1109-aws-fips to a version that resolves this vulnerability.

    Fixed in FIPS-140
  19. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1109-gcp to a version that resolves this vulnerability.

    Fixed in 5.15.0-1109.118
  20. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1109-gcp-fips to a version that resolves this vulnerability.

    Fixed in FIPS-140
  21. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-181-fips to a version that resolves this vulnerability.

    Fixed in FIPS-140
  22. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-181-generic to a version that resolves this vulnerability.

    Fixed in 5.15.0-181.191
  23. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-181-generic-64k to a version that resolves this vulnerability.

    Fixed in 5.15.0-181.191
  24. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-181-generic-lpae to a version that resolves this vulnerability.

    Fixed in 5.15.0-181.191
  25. Upgrade

    Upgrade ubuntu/linux-image-aws-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1109.112
  26. Upgrade

    Upgrade ubuntu/linux-image-aws-64k-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1109.112
  27. Upgrade

    Upgrade ubuntu/linux-image-aws-64k-lts-22.04 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1109.112
  28. Upgrade

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

    Fixed in FIPS-140
  29. Upgrade

    Upgrade ubuntu/linux-image-aws-fips-5.15 to a version that resolves this vulnerability.

    Fixed in FIPS-140
  30. Upgrade

    Upgrade ubuntu/linux-image-aws-lts-22.04 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1109.112
  31. Upgrade

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

    Fixed in FIPS-140
  32. Upgrade

    Upgrade ubuntu/linux-image-fips-5.15 to a version that resolves this vulnerability.

    Fixed in FIPS-140
  33. Upgrade

    Upgrade ubuntu/linux-image-gcp-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1109.105
  34. Upgrade

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

    Fixed in FIPS-140
  35. Upgrade

    Upgrade ubuntu/linux-image-gcp-fips-5.15 to a version that resolves this vulnerability.

    Fixed in FIPS-140
  36. Upgrade

    Upgrade ubuntu/linux-image-gcp-lts-22.04 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1109.105
  37. Upgrade

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

    Fixed in 5.15.0.181.164
  38. Upgrade

    Upgrade ubuntu/linux-image-generic-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.181.164
  39. Upgrade

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

    Fixed in 5.15.0.181.164
  40. Upgrade

    Upgrade ubuntu/linux-image-generic-64k-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.181.164
  41. Upgrade

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

    Fixed in 5.15.0.181.164
  42. Upgrade

    Upgrade ubuntu/linux-image-generic-lpae-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.181.164
  43. Upgrade

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

    Fixed in 5.15.0.1105.104
  44. Upgrade

    Upgrade ubuntu/linux-image-gke-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1105.104
  45. Upgrade

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

    Fixed in 5.15.0.1092.91
  46. Upgrade

    Upgrade ubuntu/linux-image-gkeop-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1092.91
  47. Upgrade

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

    Fixed in 5.15.0.1103.99
  48. Upgrade

    Upgrade ubuntu/linux-image-ibm-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1103.99
  49. Upgrade

    Upgrade ubuntu/linux-image-intel-iot-realtime to a version that resolves this vulnerability.

    Fixed in Real-time
  50. Upgrade

    Upgrade ubuntu/linux-image-intel-iot-realtime-5.15 to a version that resolves this vulnerability.

    Fixed in Real-time
  51. Upgrade

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

    Fixed in 5.15.0.1104.103
  52. Upgrade

    Upgrade ubuntu/linux-image-intel-iotg-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1104.103
  53. Upgrade

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

    Fixed in 5.15.0.1101.97
  54. Upgrade

    Upgrade ubuntu/linux-image-kvm-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1101.97
  55. Upgrade

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

    Fixed in 5.15.0.1104.104
  56. Upgrade

    Upgrade ubuntu/linux-image-nvidia-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1104.104
  57. Upgrade

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

    Fixed in 5.15.0.1104.104
  58. Upgrade

    Upgrade ubuntu/linux-image-nvidia-lowlatency-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1104.104
  59. Upgrade

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

    Fixed in 5.15.0.1061.61
  60. Upgrade

    Upgrade ubuntu/linux-image-nvidia-tegra-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1061.61
  61. Upgrade

    Upgrade ubuntu/linux-image-nvidia-tegra-igx to a version that resolves this vulnerability.

    Fixed in 5.15.0.1050.52
  62. Upgrade

    Upgrade ubuntu/linux-image-nvidia-tegra-igx-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1050.52
  63. Upgrade

    Upgrade ubuntu/linux-image-nvidia-tegra-igx-rt to a version that resolves this vulnerability.

    Fixed in 5.15.0.1050.52
  64. Upgrade

    Upgrade ubuntu/linux-image-nvidia-tegra-igx-rt-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1050.52
  65. Upgrade

    Upgrade ubuntu/linux-image-nvidia-tegra-rt to a version that resolves this vulnerability.

    Fixed in 5.15.0.1061.61
  66. Upgrade

    Upgrade ubuntu/linux-image-nvidia-tegra-rt-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1061.61
  67. Upgrade

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

    Fixed in 5.15.0.181.164
  68. Upgrade

    Upgrade ubuntu/linux-image-oracle-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1106.102
  69. Upgrade

    Upgrade ubuntu/linux-image-oracle-lts-22.04 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1106.102
  70. Upgrade

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

    Fixed in 5.15.0.1103.101
  71. Upgrade

    Upgrade ubuntu/linux-image-raspi-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.1103.101
  72. Upgrade

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

    Fixed in 5.15.0.1103.101
  73. Upgrade

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

    Fixed in Real-time
  74. Upgrade

    Upgrade ubuntu/linux-image-realtime-5.15 to a version that resolves this vulnerability.

    Fixed in Real-time
  75. Upgrade

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

    Fixed in 5.15.0.181.164
  76. Upgrade

    Upgrade ubuntu/linux-image-virtual-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0.181.164
  77. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1061-nvidia-tegra to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  78. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1061-nvidia-tegra-rt to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  79. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1103-ibm to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  80. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1109-aws to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  81. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-1109-gcp to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  82. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-181-generic to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  83. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-181-generic-64k to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  84. Upgrade

    Upgrade ubuntu/linux-image-5.15.0-181-generic-lpae to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  85. Upgrade

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

    Fixed in Ubuntu Pro
  86. Upgrade

    Upgrade ubuntu/linux-image-aws-5.15 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  87. Upgrade

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

    Fixed in Ubuntu Pro
  88. Upgrade

    Upgrade ubuntu/linux-image-gcp-5.15 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  89. Upgrade

    Upgrade ubuntu/linux-image-generic-5.15 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  90. Upgrade

    Upgrade ubuntu/linux-image-generic-64k-5.15 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  91. Upgrade

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

    Fixed in Ubuntu Pro
  92. Upgrade

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

    Fixed in Ubuntu Pro
  93. Upgrade

    Upgrade ubuntu/linux-image-generic-lpae-5.15 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  94. Upgrade

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

    Fixed in Ubuntu Pro
  95. Upgrade

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

    Fixed in Ubuntu Pro
  96. Upgrade

    Upgrade ubuntu/linux-image-ibm-5.15 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  97. Upgrade

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

    Fixed in Ubuntu Pro
  98. Upgrade

    Upgrade ubuntu/linux-image-nvidia-tegra-5.15 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  99. Upgrade

    Upgrade ubuntu/linux-image-nvidia-tegra-rt to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  100. Upgrade

    Upgrade ubuntu/linux-image-nvidia-tegra-rt-5.15 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  101. Upgrade

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

    Fixed in Ubuntu Pro
  102. Upgrade

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

    Fixed in Ubuntu Pro
  103. Upgrade

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

    Fixed in Ubuntu Pro
  104. Upgrade

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

    Fixed in Ubuntu Pro
  105. Upgrade

    Upgrade ubuntu/linux-image-virtual-5.15 to a version that resolves this vulnerability.

    Fixed in Ubuntu Pro
  106. Upgrade

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

    Fixed in Ubuntu Pro
  107. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch USN-8388-1

Event History

Jun 4, 2026
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 are the main vulnerabilities addressed in USN-8388-1?

USN-8388-1 addresses the Linux kernel vulnerabilities identified as CVE-2026-46333, CVE-2026-46300, and CVE-2026-43503.

2

What is the severity of USN-8388-1?

The severity of USN-8388-1 is rated at 55, indicating a significant security concern in the Linux kernel.

3

How do I fix the vulnerabilities in USN-8388-1?

To fix the vulnerabilities in USN-8388-1, you should update your Ubuntu system to the latest kernel version provided by Canonical.

4

Are there any known exploits for the vulnerabilities in USN-8388-1?

Currently, there are no public reports of active exploits for the vulnerabilities addressed in USN-8388-1.

5

What systems are affected by USN-8388-1?

USN-8388-1 affects systems running the Canonical Ubuntu Linux kernel that have not been updated to the patched version.

Company

Resources

Contact

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