Description
In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) following a particular sequence of operations that includes creation of a new virtual machine control block (VMCB). The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for disclosure of SEV guest memory contents. Users of SEV-ES/SEV-SNP guest VMs are not impacted by this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AMD | EPYC™ Processors | various | — |
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | kernel-firmware | 20220509-150400.4.5.1 | SUSE-SU-2022:1923-1 |
| SLES 15 SP3 | kernel-firmware | 20210208-150300.4.10.1 | SUSE-SU-2022:1840-1 |
| SLES 15 SP2 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
| SLES 15 SP1 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
| SLES 15 | kernel-firmware | 20191118-150000.3.42.1 | SUSE-SU-2022:1847-1 |
Show 19 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | kernel-firmware | 20190618-5.25.2 | SUSE-SU-2022:1846-1 |
| SLES 12 SP4 | kernel-firmware | 20190618-5.25.2 | SUSE-SU-2022:1846-1 |
| SLES for SAP 15 SP2 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
| SLES for SAP 15 SP1 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
| SLES for SAP 15 | kernel-firmware | 20191118-150000.3.42.1 | SUSE-SU-2022:1847-1 |
| SLES for SAP 12 SP5 | kernel-firmware | 20190618-5.25.2 | SUSE-SU-2022:1846-1 |
| SLES for SAP 12 SP4 | kernel-firmware | 20190618-5.25.2 | SUSE-SU-2022:1846-1 |
| SLE Micro 5.2 | kernel-firmware | 20210208-150300.4.10.1 | SUSE-SU-2022:1840-1 |
| SLE Micro 5.1 | kernel-firmware | 20210208-150300.4.10.1 | SUSE-SU-2022:1840-1 |
| SLE HPC 15 SP2 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
| SLE HPC 15 SP1 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
| SLE HPC 15 | kernel-firmware | 20191118-150000.3.42.1 | SUSE-SU-2022:1847-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-firmware | 20190618-5.25.2 | SUSE-SU-2022:1846-1 |
| SUSE OpenStack Cloud 9 | kernel-firmware | 20190618-5.25.2 | SUSE-SU-2022:1846-1 |
| SUSE Manager Server 4.1 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
| SUSE Manager Retail Branch Server 4.1 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
| SUSE Manager Proxy 4.1 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
| SUSE Enterprise Storage 7 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
| SUSE Enterprise Storage 6 | kernel-firmware | 20200107-150100.3.31.1 | SUSE-SU-2022:1751-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | kernel-firmware | 20220509-150400.4.5.1 | SUSE-SU-2022:1923-1 |
| openSUSE Leap 15.3 | kernel-firmware | 20210208-150300.4.10.1 | SUSE-SU-2022:1840-1 |
Advisories 6
- SUSE-SU-2022:1923-1 Security update for kernel-firmware SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1751-1 Security update for kernel-firmware SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1840-1 Security update for kernel-firmware SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1847-1 Security update for kernel-firmware SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1846-1 Security update for kernel-firmware SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-0073 AMD Prozessoren: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 16, 2025