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9.3
CVE-2026-89930: Linux KVM may skip memory cleanup on failed VM start
CVE-2026-89930 · published 1 month ago
Summary
The Linux kernel’s KVM component could forget to clear certain cached memory references when a nested virtual machine fails to start. This might cause the system to use stale address information, potentially leading to instability or unexpected behavior. Updating the kernel ensures the cleanup always occurs, so applying the latest Linux updates resolves the issue.
What to do
- Update debian linux to version 7.2.6-1.
- Update linux kernel to version 7.2.5.
- Update bellsoft linux-lts to version 6.18.53-r0.
- Update debian linux to version 6.12.111-1.
- Update bellsoft linux-lts to version 6.12.111-r0.
- Update debian linux-6.12 to version 6.12.111-1~deb12u1.
- Update bellsoft linux-lts to version 6.1.189-r0.
- Update debian linux to version 6.1.190-1.
- Update canonical linux-aws-5.15 to version 5.15.0-1119.126~20.04.1.
- Update canonical linux-azure-5.15 to version 5.15.0-1125.134~20.04.1.
- Update canonical linux-azure-fde-5.15 to version 5.15.0-1124.133~20.04.1.
- Update canonical linux-gcp-5.15 to version 5.15.0-1120.130~20.04.1.
- Update canonical linux-hwe-5.15 to version 5.15.0-202.212~20.04.1.
- Update canonical linux-ibm-5.15 to version 5.15.0-1113.117~20.04.1.
- Update canonical linux-intel-iotg-5.15 to version 5.15.0-1114.120~20.04.1.
- Update canonical linux-lowlatency-hwe-5.15 to version 5.15.0-197.207~20.04.1.
- Update canonical linux-nvidia-tegra-5.15 to version 5.15.0-1070.72~20.04.1.
- Update canonical linux-oracle-5.15 to version 5.15.0-1116.122~20.04.1.
- Update canonical linux-riscv-5.15 to version 5.15.0-1113.117~20.04.2.
- Update canonical linux to version 5.15.0-202.212.
- Update canonical linux-aws to version 5.15.0-1119.126.
- Update canonical linux-azure to version 5.15.0-1125.134.
- Update canonical linux-azure-fde to version 5.15.0-1124.133.
- Update canonical linux-gcp to version 5.15.0-1120.130.
- Update canonical linux-gke to version 5.15.0-1115.121.
- Update canonical linux-gkeop to version 5.15.0-1102.110.
- Update canonical linux-ibm to version 5.15.0-1113.117.
- Update canonical linux-intel-iotg to version 5.15.0-1114.120.
- Update canonical linux-kvm to version 5.15.0-1111.116.
- Update canonical linux-lowlatency to version 5.15.0-197.207.
- Update canonical linux-nvidia to version 5.15.0-1114.115.
- Update canonical linux-nvidia-tegra to version 5.15.0-1070.72.
- Update canonical linux-nvidia-tegra-igx to version 5.15.0-1059.59.
- Update canonical linux-oracle to version 5.15.0-1116.122.
- Update canonical linux-bluefield to version 5.15.0-1103.105.
- Update canonical linux-intel-iot-realtime to version 5.15.0-1111.115.
- Update canonical linux-realtime to version 5.15.0-1118.127.
- Update canonical linux-aws-fips to version 5.15.0-1119.126+fips1.
- Update canonical linux-azure-fips to version 5.15.0-1125.134+fips1.
- Update canonical linux-fips to version 5.15.0-202.212+fips1.
- Update canonical linux-gcp-fips to version 5.15.0-1120.130+fips1.
- Update canonical linux-hwe-7.0 to version 7.0.0-42.42~24.04.1.
- Update canonical linux-riscv-7.0 to version 7.0.0-42.42.1~24.04.1.
- Update canonical linux to version 7.0.0-42.42.
- Update canonical linux-aws to version 7.0.0-1016.17.
- Update canonical linux-gcp to version 7.0.0-1016.18.
- Update canonical linux-ibm to version 7.0.0-1017.17.
- Update canonical linux-oem-7.0 to version 7.0.0-1017.17.
- Update canonical linux-oracle to version 7.0.0-1015.16.
- Update canonical linux-riscv to version 7.0.0-42.42.1.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Debian:12 | debian | linux |
< 6.1.190-1 Fix: upgrade to 6.1.190-1
|
| Debian:14 | debian | linux |
< 7.2.6-1 Fix: upgrade to 7.2.6-1
|
| – | linux | linux |
< c0c66cd575e31218da6a7d104c6ef80b0830b60c 4.4 < b577a7cd6d984dd430af88ee1c9e03da71b73ee0 |
| Linux | linux | kernel |
>= 6.19.0, < 7.2.5 Fix: upgrade to 7.2.5
|
| Ubuntu:Pro:14.04:LTS | canonical | linux | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-aws | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:Pro:14.04:LTS | canonical | linux-lts-xenial | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-aws-hwe | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-gcp | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-hwe | All versions |
| Ubuntu:16.04:LTS | canonical | linux-hwe-edge | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-kvm | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | linux-oracle | All versions |
| Ubuntu:Pro:FIPS:16.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-aws-5.4 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-azure-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-azure-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-edge | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-gcp-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-gcp-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gkeop-5.4 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-hwe-5.4 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-ibm-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oem | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.3 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-oracle-5.4 | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | linux-raspi-5.4 | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-aws-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-azure-fips | All versions |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | canonical | linux-gcp-fips | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-aws-5.15 |
< 5.15.0-1119.126~20.04.1 Fix: upgrade to 5.15.0-1119.126~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-aws-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-azure-5.15 |
< 5.15.0-1125.134~20.04.1 Fix: upgrade to 5.15.0-1125.134~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-azure-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-fde | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-azure-fde-5.15 |
< 5.15.0-1124.133~20.04.1 Fix: upgrade to 5.15.0-1124.133~20.04.1
|
| Ubuntu:Pro:20.04:LTS | canonical | linux-bluefield | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.11 | All versions |
Showing 50 of 201. Show the rest
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-gcp-5.15 |
< 5.15.0-1120.130~20.04.1 Fix: upgrade to 5.15.0-1120.130~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-hwe-5.15 |
< 5.15.0-202.212~20.04.1 Fix: upgrade to 5.15.0-202.212~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.8 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-ibm | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-ibm-5.15 |
< 5.15.0-1113.117~20.04.1 Fix: upgrade to 5.15.0-1113.117~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-intel-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-intel-iotg-5.15 |
< 5.15.0-1114.120~20.04.1 Fix: upgrade to 5.15.0-1114.120~20.04.1
|
| Ubuntu:Pro:20.04:LTS | canonical | linux-iot | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-lowlatency-hwe-5.15 |
< 5.15.0-197.207~20.04.1 Fix: upgrade to 5.15.0-197.207~20.04.1
|
| Ubuntu:Pro:20.04:LTS | canonical | linux-nvidia-tegra-5.15 |
< 5.15.0-1070.72~20.04.1 Fix: upgrade to 5.15.0-1070.72~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-oem-5.10 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.14 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.6 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-oracle-5.15 |
< 5.15.0-1116.122~20.04.1 Fix: upgrade to 5.15.0-1116.122~20.04.1
|
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.8 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-raspi | All versions |
| Ubuntu:20.04:LTS | canonical | linux-raspi2 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.11 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-riscv-5.15 |
< 5.15.0-1113.117~20.04.2 Fix: upgrade to 5.15.0-1113.117~20.04.2
|
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.8 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-xilinx-zynqmp | All versions |
| Ubuntu:22.04:LTS | canonical | linux-allwinner-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-ibm-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-intel-iot-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-intel-iotg |
< 5.15.0-1114.120 Fix: upgrade to 5.15.0-1114.120
|
| Ubuntu:22.04:LTS | canonical | linux-lowlatency |
< 5.15.0-197.207 Fix: upgrade to 5.15.0-197.207
|
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia |
< 5.15.0-1114.115 Fix: upgrade to 5.15.0-1114.115
|
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-tegra |
< 5.15.0-1070.72 Fix: upgrade to 5.15.0-1070.72
|
| Ubuntu:22.04:LTS | canonical | linux-nvidia-tegra-igx |
< 5.15.0-1059.59 Fix: upgrade to 5.15.0-1059.59
|
| Ubuntu:22.04:LTS | canonical | linux-oem-5.17 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.0 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.1 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.5 | All versions |
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-realtime-6.8 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-aws-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-aws-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-aws-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-fde-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-fde-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-fde-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-nvidia | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-nvidia-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-7.0 |
< 7.0.0-42.42~24.04.1 Fix: upgrade to 7.0.0-42.42~24.04.1
|
| Ubuntu:24.04:LTS | canonical | linux-lowlatency-hwe-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-lowlatency | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.8 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-raspi-realtime | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-7.0 |
< 7.0.0-42.42.1~24.04.1 Fix: upgrade to 7.0.0-42.42.1~24.04.1
|
| Ubuntu:24.04:LTS | canonical | linux-xilinx | All versions |
| Ubuntu:Pro:Realtime:24.04:LTS | canonical | linux-realtime-6.14 | All versions |
| Ubuntu:Pro:Realtime:24.04:LTS | canonical | linux-realtime-6.17 | All versions |
| Ubuntu:26.04:LTS | canonical | linux-nvidia-bos | All versions |
| Ubuntu:26.04:LTS | canonical | linux-oem-7.0 |
< 7.0.0-1017.17 Fix: upgrade to 7.0.0-1017.17
|
| Alpaquita:23 | bellsoft | linux-lts |
>= 6.1.182-r0 >= 6.1.182-r0, < 6.1.189-r0 Fix: upgrade to 6.1.189-r0
|
| Alpaquita:25 | bellsoft | linux-lts |
>= 6.12.103-r0 >= 6.12.103-r0, < 6.12.111-r0 Fix: upgrade to 6.12.111-r0
|
| Alpaquita:stream | bellsoft | linux-lts |
>= 6.18.46-r0 >= 6.18.46-r0, < 6.18.53-r0 Fix: upgrade to 6.18.53-r0
|
| Debian:13 | debian | linux |
< 6.12.111-1 Fix: upgrade to 6.12.111-1
|
| Debian:12 | debian | linux-6.12 |
< 6.12.111-1~deb12u1 Fix: upgrade to 6.12.111-1~deb12u1
|
| Ubuntu:24.04:LTS | canonical | linux-vmware | All versions |
| Ubuntu:22.04:LTS | canonical | linux |
< 5.15.0-202.212 Fix: upgrade to 5.15.0-202.212
|
| Ubuntu:22.04:LTS | canonical | linux-aws |
< 5.15.0-1119.126 Fix: upgrade to 5.15.0-1119.126
|
| Ubuntu:22.04:LTS | canonical | linux-azure |
< 5.15.0-1125.134 Fix: upgrade to 5.15.0-1125.134
|
| Ubuntu:22.04:LTS | canonical | linux-azure-fde |
< 5.15.0-1124.133 Fix: upgrade to 5.15.0-1124.133
|
| Ubuntu:22.04:LTS | canonical | linux-gcp |
< 5.15.0-1120.130 Fix: upgrade to 5.15.0-1120.130
|
| Ubuntu:22.04:LTS | canonical | linux-gke |
< 5.15.0-1115.121 Fix: upgrade to 5.15.0-1115.121
|
| Ubuntu:22.04:LTS | canonical | linux-gkeop |
< 5.15.0-1102.110 Fix: upgrade to 5.15.0-1102.110
|
| Ubuntu:22.04:LTS | canonical | linux-ibm |
< 5.15.0-1113.117 Fix: upgrade to 5.15.0-1113.117
|
| Ubuntu:22.04:LTS | canonical | linux-kvm |
< 5.15.0-1111.116 Fix: upgrade to 5.15.0-1111.116
|
| Ubuntu:22.04:LTS | canonical | linux-oracle |
< 5.15.0-1116.122 Fix: upgrade to 5.15.0-1116.122
|
| Ubuntu:Nvidia-BlueField:22.04:LTS | canonical | linux-bluefield |
< 5.15.0-1103.105 Fix: upgrade to 5.15.0-1103.105
|
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-intel-iot-realtime |
< 5.15.0-1111.115 Fix: upgrade to 5.15.0-1111.115
|
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-realtime |
< 5.15.0-1118.127 Fix: upgrade to 5.15.0-1118.127
|
| Ubuntu:Pro:FIPS-updates:22.04:LTS | canonical | linux-aws-fips |
< 5.15.0-1119.126+fips1 Fix: upgrade to 5.15.0-1119.126+fips1
|
| Ubuntu:Pro:FIPS-updates:22.04:LTS | canonical | linux-azure-fips |
< 5.15.0-1125.134+fips1 Fix: upgrade to 5.15.0-1125.134+fips1
|
| Ubuntu:Pro:FIPS-updates:22.04:LTS | canonical | linux-fips |
< 5.15.0-202.212+fips1 Fix: upgrade to 5.15.0-202.212+fips1
|
| Ubuntu:Pro:FIPS-updates:22.04:LTS | canonical | linux-gcp-fips |
< 5.15.0-1120.130+fips1 Fix: upgrade to 5.15.0-1120.130+fips1
|
| Ubuntu:26.04:LTS | canonical | linux |
< 7.0.0-42.42 Fix: upgrade to 7.0.0-42.42
|
| Ubuntu:26.04:LTS | canonical | linux-aws |
< 7.0.0-1016.17 Fix: upgrade to 7.0.0-1016.17
|
| Ubuntu:26.04:LTS | canonical | linux-gcp |
< 7.0.0-1016.18 Fix: upgrade to 7.0.0-1016.18
|
| Ubuntu:26.04:LTS | canonical | linux-ibm |
< 7.0.0-1017.17 Fix: upgrade to 7.0.0-1017.17
|
| Ubuntu:26.04:LTS | canonical | linux-oracle |
< 7.0.0-1015.16 Fix: upgrade to 7.0.0-1015.16
|
| Ubuntu:26.04:LTS | canonical | linux-riscv |
< 7.0.0-42.42.1 Fix: upgrade to 7.0.0-42.42.1
|
Original advisory text
KVM: nVMX: Service local TLB flushes on failed nested VM-Enter
In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Service local TLB flushes on failed nested VM-Enter KVM services local TLB flushes on "full" nested VM-Exits (through __nested_vmx_vmexit()), but not if a nested VM-Enter fails (e.g. due to failed VMCS checks in nested_vmx_enter_non_root_mode()). However, it is possible that KVM had queued TLB flushes that need to be performed, even if the nested VM-Enter was not successful. For example, if VPID is disabled for L2 (via nested_vmx_transition_tlb_flush(), or if via the MSR load lists, as the SDM says: If any MSR is being loaded in such a way that would architecturally require a TLB flush, the TLBs are updated so that, after VM entry, the logical processor will not use any translations that were cached before the transition. The SDM is unclear about when the TLB flush should occur, and whether or not a failed VM entry would flush the TLB, so it is safer to always do the TLB flush in this case. More concretely, KVM also updates the last VPID L1 used for L2 in nested_vmx_transition_tlb_flush() (i.e. last_vpid), even if the VM entry ultimately fails. With the current code, KVM could miss a TLB flush if L1 changes L2's VPID, then does a failed VM entry followed by a successful one, as the failed VM entry would update last_vpid but not actually flush the TLB. Servicing local TLB flushes on failed VM entries makes sure that the TLB is always flushed when last_vpid is updated.
References
- https://git.kernel.org/stable/c/1025b938dc439b75c720a568a855a13eeb245686 URL
- https://git.kernel.org/stable/c/312cdb6d8940827dea63a7a52fb714a5049f06d1 URL
- https://git.kernel.org/stable/c/05a0b701d1089fb57beeb8982f23c3bbafe0fa8b URL
- https://git.kernel.org/stable/c/c0c66cd575e31218da6a7d104c6ef80b0830b60c URL
- https://git.kernel.org/stable/c/62c3ee4c9f0e2efef5157358b3549e50ede96d73 URL
- https://git.kernel.org/stable/c/c43563e7518e65ec6ccaa6a65f84c5af5ca5d379 URL
- https://git.kernel.org/stable/c/f74fccdf4f7fb0780cd84944108d35f3d9dc46a7 URL
- https://security-tracker.debian.org/tracker/CVE-2026-89930 Vendor Advisory
- https://ubuntu.com/security/CVE-2026-89930 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-89930 Third Party Advisory
- https://git.kernel.org/linus/05a0b701d1089fb57beeb8982f23c3bbafe0fa8b Third Party Advisory
- https://docs.bell-sw.com/security/cves/CVE-2026-89930 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-89930 Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git Product
- https://git.kernel.org/stable/c/b577a7cd6d984dd430af88ee1c9e03da71b73ee0 URL
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89930... Vendor Advisory
- https://ubuntu.com/security/notices/USN-8962-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8961-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8959-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8963-1 Vendor Advisory
Severity
9.3
Critical
Timeline
Published16 Sep 2026
Updated3 Nov 2026
First seen16 Sep 2026
Sources
CVE-2026-89930 · NVD
CVE-2026-89930 · MITRE
CVE-2026-89930 · OSV
DEBIAN-CVE-2026-89930 · OSV
UBUNTU-CVE-2026-89930 · OSV
BELL-CVE-2026-89930 · OSV
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