Description
Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an uninitialized variable in notification handling code. The bug can be triggered by an unprivileged local user and can result in the incorrect caching of AppArmor notification responses.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Canonical | Ubuntu Linux | 6.8.0 – < 6.8.0-124.124, 6.17.0 – < 6.17.0-35.35, 7.0.0 – < 7.0.0-22.22 | 6.8.0-124.124 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 24.04 LTS | linux-bluefield | 6.8.0-1023.27 | — |
| Ubuntu 26.04 LTS | linux | 7.0.0-22.22 | USN-8370-1 |
| Ubuntu 26.04 LTS | linux-aws +1 | 7.0.0-1006.6 | USN-8370-1 |
| Ubuntu 26.04 LTS | linux-gcp +1 | 7.0.0-1005.5 | USN-8370-1 |
| Ubuntu 26.04 LTS | linux-ibm +1 | 7.0.0-1007.7 | USN-8461-1, USN-8370-1 |
| Ubuntu 26.04 LTS | linux-nvidia | 7.0.0-1009.9 | USN-8370-1 |
| Ubuntu 26.04 LTS | linux-oem-7.0 | 7.0.0-1008.8 | USN-8489-1 |
| Ubuntu 26.04 LTS | linux-raspi | 7.0.0-1011.11 | USN-8370-1 |
| Ubuntu 26.04 LTS | linux-riscv +1 | 7.0.0-22.22.1 | USN-8370-1 |
| Ubuntu 25.10 | linux | 6.17.0-35.35 | USN-8371-1 |
| Ubuntu 25.10 | linux-aws +1 | 6.17.0-1017.17 | USN-8371-1 |
| Ubuntu 25.10 | linux-azure-fde | No fix yet | — |
| Ubuntu 25.10 | linux-gcp | 6.17.0-1018.19 | USN-8374-1 |
| Ubuntu 25.10 | linux-oracle | 6.17.0-1016.16 | USN-8371-1 |
| Ubuntu 25.10 | linux-raspi | 6.17.0-1018.18 | USN-8371-1 |
| Ubuntu 25.10 | linux-realtime | 6.17.0-1014.16 | USN-8371-1 |
| Ubuntu 25.10 | linux-riscv | 6.17.0-35.35.1 | — |
| Ubuntu 24.04 LTS | linux | 6.8.0-124.124 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1057.60 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-aws-6.17 +1 | 6.17.0-1017.17~24.04.1 | USN-8374-1, USN-8371-1 |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1058.64 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-azure-fde | 6.8.0-1058.65 | — |
| Ubuntu 24.04 LTS | linux-azure-nvidia | 6.8.0-1039.42 | — |
| Ubuntu 24.04 LTS | linux-gcp | 6.8.0-1060.63 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-gcp-6.17 | 6.17.0-1018.19~24.04.1 | USN-8374-1 |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1055.61 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-gkeop | 6.8.0-1042.45 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-hwe-6.17 | 6.17.0-35.35~24.04.1 | USN-8371-1 |
| Ubuntu 24.04 LTS | linux-hwe-7.0 | 7.0.0-28.28~24.04.1 | USN-8569-1 |
| Ubuntu 24.04 LTS | linux-ibm | 6.8.0-1057.58 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-lowlatency | 6.8.0-134.134.1 | USN-8497-1 |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1055.58 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-nvidia-6.17 | 6.17.0-1021.21 | USN-8371-1 |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1055.58.1 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-nvidia-tegra | 6.8.0-1026.26 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-oem-6.17 | 6.17.0-1024.24 | USN-8371-1 |
| Ubuntu 24.04 LTS | linux-oracle | 6.8.0-1054.55 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-oracle-6.17 | 6.17.0-1016.16~24.04.1 | USN-8371-1 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1057.61 | USN-8373-1 |
| Ubuntu 24.04 LTS | linux-riscv +15 | No fix yet | — |
| Ubuntu 24.04 LTS | linux-riscv-6.17 | 6.17.0-35.35.1~24.04.1 | — |
| Ubuntu 24.04 LTS | linux-xilinx | 6.8.0-1032.33 | USN-8499-1 |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1057.60~22.04.1 | USN-8373-1 |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1059.65~22.04.1 | USN-8440-1 |
| Ubuntu 22.04 LTS | linux-azure-fde-6.8 | 6.8.0-1058.65~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-gcp-6.8 | 6.8.0-1060.63~22.04.1 | USN-8373-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 +1 | 6.8.0-124.124~22.04.1 | USN-8373-1 |
| Ubuntu 22.04 LTS | linux-ibm-6.8 | 6.8.0-1057.58~22.04.1 | USN-8373-1 |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.8 | 6.8.0-134.134.1~22.04.1 | USN-8497-1 |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1055.58~22.04.1 | USN-8373-1 |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | 6.8.0-1054.55~22.04.1 | USN-8373-1 |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2046.47 | USN-8373-1 |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1052.53 | USN-8373-1 |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.14 | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.17 | 6.17.0-1014.16~24.04.1 | USN-8371-1 |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | 6.8.1-1052.53~22.04.1 | USN-8373-1 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-aws-fips | 6.8.0-1057.60+fips1 | USN-8373-1 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-azure-fips | 6.8.0-1059.65+fips1 | USN-8393-1 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-fips | 6.8.0-124.124+fips1 | USN-8373-1 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-gcp-fips | 6.8.0-1060.63+fips1 | USN-8373-1 |
Advisories 11
- USN-8569-1 linux-hwe-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8373-1 linux, linux-aws, linux-aws-6.8, linux-aws-fips, linux-azure, linux-fips, linux-gcp, linux-gcp-6.8, linux-gcp-fips, linux-gke, linux-gkeop, linux-hwe-6.8, linux-ibm, linux-ibm-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-nvidia-tegra, linux-oracle, linux-oracle-6.8, linux-raspi, linux-raspi-realtime, linux-realtime, linux-realtime-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8489-1 linux-oem-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8440-1 linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8461-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8371-1 linux, linux-aws, linux-azure, linux-azure-6.17, linux-hwe-6.17, linux-nvidia-6.17, linux-oem-6.17, linux-oracle, linux-oracle-6.17, linux-raspi, linux-realtime, linux-realtime-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8370-1 linux, linux-aws, linux-gcp, linux-ibm, linux-nvidia, linux-oracle, linux-raspi, linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8374-1 linux-aws-6.17, linux-gcp, linux-gcp-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8497-1 linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8499-1 linux-xilinx vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8393-1 linux-azure-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026