Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: nv: Inject SEA if guest VNCR isn't normal memory
When constructing an L1 VNCR mapping, KVM unconditionally uses cacheable
memory attributes, even if the underlying PFN isn't memory. This gets
particularly hairy if the endpoint doesn't support cacheable memory
attributes, potentially throwing an SError on writeback...
While KVM does permit cacheable memory attributes on certain PFNMAP
VMAs, kvm_translate_vncr() isn't currently grabbing the VMA. So do the
simpler thing for now and just reject everything that isn't memory.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 6.16 | 6.18.40 |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 7.1.5-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | linux | 7.0.0-34.34 | USN-8816-1 |
| Ubuntu 26.04 LTS | linux-aws +1 | 7.0.0-1013.13 | USN-8816-2, USN-8816-1 |
| Ubuntu 26.04 LTS | linux-azure | 7.0.0-1017.17 | USN-8888-1 |
| Ubuntu 26.04 LTS | linux-azure-fde | 7.0.0-1016.16 | USN-8888-1 |
| Ubuntu 26.04 LTS | linux-gke | 7.0.0-1007.8 | USN-8816-4 |
| Ubuntu 26.04 LTS | linux-ibm +1 | 7.0.0-1014.14 | USN-8816-2, USN-8816-1 |
| Ubuntu 26.04 LTS | linux-nvidia | 7.0.0-1025.26 | USN-9043-1 |
| Ubuntu 26.04 LTS | linux-nvidia-bos | 7.0.0-2022.23 | USN-9003-1 |
| Ubuntu 26.04 LTS | linux-oracle | 7.0.0-1012.12 | USN-8816-1 |
| Ubuntu 26.04 LTS | linux-raspi | 7.0.0-1020.20 | USN-8816-1 |
| Ubuntu 26.04 LTS | linux-riscv +1 | 7.0.0-34.34.1 | USN-8816-1 |
| Ubuntu 24.04 LTS | linux-aws-7.0 +1 | 7.0.0-1013.13~24.04.1 | USN-8816-2, USN-8816-1 |
| Ubuntu 24.04 LTS | linux-azure-7.0 | 7.0.0-1017.17~24.04.1 | USN-8888-2 |
| Ubuntu 24.04 LTS | linux-azure-fde-7.0 | 7.0.0-1016.16~24.04.1 | USN-8888-2 |
| Ubuntu 24.04 LTS | linux-hwe-7.0 | 7.0.0-34.34~24.04.1 | USN-8816-1 |
| Ubuntu 24.04 LTS | linux-nvidia-7.0 | 7.0.0-1024.25~24.04.1 | USN-9003-1 |
| Ubuntu 24.04 LTS | linux-oracle-7.0 | 7.0.0-1012.12~24.04.1 | USN-8816-3 |
| Ubuntu 24.04 LTS | linux-riscv +27 | No fix yet | — |
| Ubuntu 24.04 LTS | linux-riscv-7.0 | 7.0.0-34.34.1~24.04.1 | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.14 +1 | No fix yet | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.18.41-94.142 | 1:1.0-0.amzn2023 | ALAS2023-2026-2071 |
| Amazon Linux 2023 | perf6.18 +12 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 |
Advisories 10
- WID-SEC-2026-2852 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- USN-9043-1 linux-nvidia vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-9003-1 linux-nvidia-7.0, linux-nvidia-bos vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8888-2 linux-azure-7.0, linux-azure-fde-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8888-1 linux-azure, linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8816-1 linux, linux-aws, linux-aws-7.0, linux-hwe-7.0, linux-ibm, linux-oracle, linux-raspi, linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
- USN-8816-2 linux-gcp, linux-gcp-7.0, linux-oem-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
- USN-8816-4 linux-gke vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
- USN-8816-3 linux-oracle-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
- ALAS2023-2026-2071 Important: kernel6.18 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 15, 2026