Description
A flaw was found in the Linux kernel. The existing KVM SEV API has a vulnerability that allows a non-root (host) user-level application to crash the host kernel by creating a confidential guest VM instance in AMD CPU that supports Secure Encrypted Virtualization (SEV).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | Fixed in kernel 5.18-rc4 | — |
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 | 5.18.2-1 | — |
| Debian 13 | linux | 5.18.2-1 | — |
| Debian 12 | linux | 5.18.2-1 | — |
| Debian 11 | linux | 5.10.149-1 | DSA-5257-1 |
| Debian 10 | linux-5.10 | 5.10.149-2~deb10u1 | DLA-3173-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-57.63 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1027.31 | USN-5792-2 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1030.37 | USN-5792-2 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1030.37.1 | USN-5792-2 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1026.33 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1024.29 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1012.16 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1022.25 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1023.28 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1025.30 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1015.15 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1026.32 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1022.24 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-riscv +3 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 +1 | 5.15.0-1027.31~20.04.1 | USN-5792-2 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1030.37~20.04.1 | USN-5792-2 |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1030.37~20.04.1.1 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1027.34~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke-5.15 | 5.15.0-1027.32~20.04.1 | USN-5877-1 |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1012.16~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 | 5.15.0-57.63~20.04.1 | USN-5792-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1023.28~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-lowlatency-hwe-5.15 | 5.15.0-58.64~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1027.33~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-riscv +23 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +11 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1029.32 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.10-15.42 | 1.0-0.amzn2023 | ALAS2023-2023-070 |
| Amazon Linux 2023 | perf +12 | 6.1.10-15.42.amzn2023 | ALAS2023-2023-070 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.70.1-1 | — |
Advisories 10
- USN-5792-1 linux, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi, vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5877-1 linux-gke-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5792-2 linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- SSA-794697 SSA-794697: Vulnerabilities in the Additional GNU/Linux Subsystem of the SIMATIC S7-1500 TM MFP Before V1.1 Siemens ProductCERT · Oct 13, 2026
- DSA-5257-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3173-1 linux-5.10 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2022-1202 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Apr 14, 2025
- ALAS2023-2023-070 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 10, 2024
- ICSA-23-166-11 Siemens SIMATIC S7-1500 TM MFP Linux Kernel CISA ICS & IT advisories · Apr 9, 2024
- WID-SEC-2023-1432 Siemens SIMATIC S7: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 22, 2023
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2038940
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=683412ccf61294d727ead4a73d97397396e69a6b
- https://access.redhat.com/security/cve/CVE-2022-0171
- DSA-5257 vendor-advisory
- [debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security update mailing-list