Description
An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.
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 | 5.14.16-1 | — |
| Debian 13 | linux | 5.14.16-1 | — |
| Debian 12 | linux | 5.14.16-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-92.103 | USN-5210-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1061.64 | USN-5210-1 |
| Ubuntu 20.04 LTS | linux-aws-5.11 +2 | 5.11.0-1023.24~20.04.1 | USN-5208-1 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1065.68 | USN-5210-1 |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1023.26 | USN-5210-1 |
| Ubuntu 20.04 LTS | linux-gcp +1 | 5.4.0-1059.63 | USN-5210-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.11 | 5.11.0-1024.26~20.04.1 | USN-5208-1 |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1057.60 | USN-5210-1 |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1029.30 | USN-5210-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.11 | 5.11.0-44.48~20.04.2 | USN-5208-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.13 | 5.13.0-23.23~20.04.2 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1010.11 | USN-5210-1 |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1051.53 | USN-5210-1 |
| Ubuntu 20.04 LTS | linux-oem-5.10 | 5.10.0-1051.53 | USN-5139-1 |
| Ubuntu 20.04 LTS | linux-oem-5.13 | 5.13.0-1026.32 | USN-5218-1 |
| Ubuntu 20.04 LTS | linux-oem-5.14 | 5.14.0-1008.8 | USN-5165-1 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1048.53 | USN-5210-1 |
| Ubuntu 20.04 LTS | linux-riscv +9 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.11 | 5.11.0-1024.25~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1061.64~18.04.1 | USN-5210-1 |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1065.68~18.04.1 | USN-5210-1 |
| Ubuntu 18.04 LTS | linux-gcp +12 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 +1 | 5.4.0-1059.63~18.04.1 | USN-5210-1 |
| Ubuntu 18.04 LTS | linux-gke-5.4 | 5.4.0-1057.60~18.04.1 | USN-5210-1 |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1029.30~18.04.2 | USN-5210-1 |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-92.103~18.04.2 | USN-5210-1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1048.53~18.04.1 | USN-5210-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1069.73+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1073.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1038.44 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | perf +26 | 4.18.0-372.9.1.el8 | RHSA-2022:1988 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | perf +19 | 4.18.0-372.9.1.el8 | ALSA-2022:1988 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | kernel | 4.18.0-372.9.1.el8 | RLSA-2022:1988 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | kernel-64kb +4 | 5.14.21-150400.24.122.2 | SUSE-SU-2024:2189-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.122.2.150400.24.58.2 | SUSE-SU-2024:2189-1 |
| SLES 15 SP4 | kernel-syms +1 | 5.14.21-150400.24.122.1 | SUSE-SU-2024:2189-1 |
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-59.34.1 | SUSE-SU-2024:2185-1, SUSE-SU-2021:3675-1 |
| SLES 15 SP3 | kernel-azure +1 | 5.3.18-38.28.2 | SUSE-SU-2021:3641-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-59.34.1.18.21.1 | SUSE-SU-2024:2185-1, SUSE-SU-2021:3675-1 |
| SLES 15 SP3 | kernel-syms-azure | 5.3.18-38.28.1 | SUSE-SU-2021:3641-1 |
| SLES 15 SP2 | kernel-azure +1 | 5.3.18-18.72.2 | SUSE-SU-2021:3640-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.93.1.9.42.5 | SUSE-SU-2024:2183-1, SUSE-SU-2021:3754-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-24.93.1 | SUSE-SU-2024:2183-1, SUSE-SU-2021:3754-1 |
| SLES 15 SP2 | kernel-syms-azure | 5.3.18-18.72.1 | SUSE-SU-2021:3640-1 |
Show 22 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.122.2.150400.24.58.2 | SUSE-SU-2024:2189-1 |
| SLES for SAP 15 SP4 | kernel-docs +2 | 5.14.21-150400.24.122.2 | SUSE-SU-2024:2189-1 |
| SLES for SAP 15 SP4 | kernel-syms +1 | 5.14.21-150400.24.122.1 | SUSE-SU-2024:2189-1 |
| SLES for SAP 15 SP3 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
| SLES for SAP 15 SP3 | kernel-docs +5 | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLES for SAP 15 SP2 | kernel-default-base | 5.3.18-150200.24.194.1.150200.9.99.1 | SUSE-SU-2024:2183-1 |
| SLES for SAP 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.194.1 | SUSE-SU-2024:2183-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.58.1 | SUSE-SU-2024:2008-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.122.2 | SUSE-SU-2024:2189-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.122.2.150400.24.58.2 | SUSE-SU-2024:2189-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.122.2 | SUSE-SU-2024:2189-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.122.2.150400.24.58.2 | SUSE-SU-2024:2189-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
| SLE Micro 5.2 | kernel-rt +1 | 5.3.18-150300.172.1 | SUSE-SU-2024:2010-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-59.34.1 | SUSE-SU-2024:2185-1, SUSE-SU-2021:3675-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-59.34.1.18.21.1 | SUSE-SU-2024:2185-1, SUSE-SU-2021:3675-1 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-60.1 | SUSE-SU-2024:2010-1, SUSE-SU-2021:3642-1 |
| SLE Micro 5.1 | kernel-source-rt | 5.3.18-150300.172.1 | SUSE-SU-2024:2010-1 |
| SLE Micro 5.0 | kernel-default | 5.3.18-24.93.1 | SUSE-SU-2021:3754-1 |
| SLE Micro 5.0 | kernel-default-base | 5.3.18-24.93.1.9.42.5 | SUSE-SU-2021:3754-1 |
| SLE Micro 5.0 | kernel-rt | 5.3.18-57.1 | SUSE-SU-2021:3658-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5-RT_Update_16 | 1-150500.11.3.1 | SUSE-SU-2024:2008-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.122.2 | SUSE-SU-2024:2189-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_27 | 1-150400.9.3.2 | SUSE-SU-2024:2189-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-59.34.1 | SUSE-SU-2024:2185-1, SUSE-SU-2021:3675-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_45 | 1-150300.7.3.1 | SUSE-SU-2024:2185-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_9 | 1-7.3.1 | SUSE-SU-2021:3675-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.93.1 | SUSE-SU-2024:2183-1, SUSE-SU-2021:3754-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_21 | 1-5.3.5 | SUSE-SU-2021:3754-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_49 | 1-150200.5.3.1 | SUSE-SU-2024:2183-1 |
| SLE HPC 15 SP4 | kernel-64kb +3 | 5.14.21-150400.24.122.2 | SUSE-SU-2024:2189-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.122.2.150400.24.58.2 | SUSE-SU-2024:2189-1 |
| SLE HPC 15 SP4 | kernel-syms +1 | 5.14.21-150400.24.122.1 | SUSE-SU-2024:2189-1 |
| SLE HPC 15 SP3 | kernel-64kb +6 | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLE HPC 15 SP3 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
| SLE HPC 15 SP2 | kernel-default-base | 5.3.18-150200.24.194.1.150200.9.99.1 | SUSE-SU-2024:2183-1 |
| SLE HPC 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.194.1 | SUSE-SU-2024:2183-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +3 | 5.14.21-150500.13.58.1 | SUSE-SU-2024:2008-1 |
| SUSE Real Time Module 15 SP3 | kernel-rt +3 | 5.3.18-60.1 | SUSE-SU-2021:3642-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +3 | 5.3.18-57.1 | SUSE-SU-2021:3658-1 |
| SUSE Manager Server 4.3 | kernel-default +1 | 5.14.21-150400.24.122.2 | SUSE-SU-2024:2189-1 |
| SUSE Manager Server 4.3 | kernel-default-base | 5.14.21-150400.24.122.2.150400.24.58.2 | SUSE-SU-2024:2189-1 |
| SUSE Manager Server 4.3 | kernel-syms +1 | 5.14.21-150400.24.122.1 | SUSE-SU-2024:2189-1 |
| SUSE Manager Proxy 4.3 | kernel-default | 5.14.21-150400.24.122.2 | SUSE-SU-2024:2189-1 |
| SUSE Manager Proxy 4.3 | kernel-default-base | 5.14.21-150400.24.122.2.150400.24.58.2 | SUSE-SU-2024:2189-1 |
| SUSE Manager Proxy 4.3 | kernel-syms +1 | 5.14.21-150400.24.122.1 | SUSE-SU-2024:2189-1 |
| SUSE Enterprise Storage 7.1 | kernel-64kb +6 | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SUSE Enterprise Storage 7.1 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | kernel-rt +3 | 5.14.21-150500.13.58.1 | SUSE-SU-2024:2008-1 |
| openSUSE Leap 15.3 | dtb-aarch64 +11 | 5.3.18-59.34.1 | openSUSE-SU-2021:3675-1 |
| openSUSE Leap 15.3 | kernel-azure +1 | 5.3.18-38.28.2 | openSUSE-SU-2021:3641-1 |
| openSUSE Leap 15.3 | kernel-default-base | 5.3.18-59.34.1.18.21.1 | openSUSE-SU-2021:3675-1 |
| openSUSE Leap 15.3 | kernel-syms-azure | 5.3.18-38.28.1 | openSUSE-SU-2021:3641-1 |
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.102.1.lp152.8.49.1 | openSUSE-SU-2021:1477-1 |
| openSUSE Leap 15.2 | kernel-docs +8 | 5.3.18-lp152.102.1 | openSUSE-SU-2021:1477-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | kernel-default | 5.14.21-150400.24.122.2 | SUSE-SU-2024:2189-1 |
| openSUSE Leap Micro 5.4 | kernel-default-base | 5.14.21-150400.24.122.2.150400.24.58.2 | SUSE-SU-2024:2189-1 |
| openSUSE Leap Micro 5.3 | kernel-default | 5.14.21-150400.24.122.2 | SUSE-SU-2024:2189-1 |
| openSUSE Leap Micro 5.3 | kernel-default-base | 5.14.21-150400.24.122.2.150400.24.58.2 | SUSE-SU-2024:2189-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-372.9.1.el8 | ELSA-2022-1988 |
Advisories 24
- ALSA-2022:1988 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:1988 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- USN-5139-1 linux-oem-5.10 vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5210-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- USN-5208-1 linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- USN-5165-1 linux-oem-5.14 vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- USN-5218-1 linux-oem-5.13 vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- RLSA-2022:1988 Important: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2021:3641-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3675-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3642-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3640-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2189-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1477-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2010-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3641-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3754-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2008-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3658-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2183-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3675-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2024:2185-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-0226 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jun 24, 2024
- ELSA-2022-1988 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 17, 2022
References
- https://git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337
- https://lore.kernel.org/linuxppc-dev/87pmrtbbdt.fsf%40mpe.ellerman.id.au/T/#u
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
- [oss-security] 20211028 Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8 mailing-list
- FEDORA-2021-4320606094 vendor-advisory
- FEDORA-2021-ed8c2e1098 vendor-advisory
- FEDORA-2021-4fed2b55c4 vendor-advisory