Description
IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AMD | AMD Processors | Processor 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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | xen | 4.16.2+90-g0d39a6d1ae-1 | — |
| Debian 13 | xen | 4.16.2+90-g0d39a6d1ae-1 | — |
| Debian 12 | xen | 4.16.2+90-g0d39a6d1ae-1 | — |
| Debian 11 | xen | 4.14.5+94-ge49571868d-1 | DSA-5378-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | xen | No fix yet | — |
| Ubuntu 26.04 LTS | xen | No fix yet | — |
| Ubuntu 25.10 | xen | No fix yet | — |
| Ubuntu 24.04 LTS | xen | No fix yet | — |
| Ubuntu 22.04 LTS | xen | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | xen | No fix yet | — |
| Ubuntu 18.04 LTS | xen | No fix yet | — |
| Ubuntu 16.04 LTS | xen | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | xen | 4.16.3_02-150400.4.19.1 | SUSE-SU-2023:0169-1 |
| SLES 15 SP3 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
| SLES 15 SP2 | xen | 4.13.4_18-150200.3.68.1 | SUSE-SU-2023:0214-1 |
| SLES 15 SP1 | xen | 4.12.4_32-150100.3.83.1 | SUSE-SU-2023:0154-1 |
| SLES 12 SP5 | xen | 4.12.4_32-3.85.4 | SUSE-SU-2023:0672-1 |
Show 22 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | xen | 4.11.4_36-2.86.1 | SUSE-SU-2023:0136-1 |
| SLES 12 SP2 | xen | 4.7.6_30-43.101.1 | SUSE-SU-2023:0186-1 |
| SLES for SAP 15 SP3 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
| SLES for SAP 15 SP2 | xen | 4.13.4_18-150200.3.68.1 | SUSE-SU-2023:0214-1 |
| SLES for SAP 15 SP1 | xen | 4.12.4_32-150100.3.83.1 | SUSE-SU-2023:0154-1 |
| SLES for SAP 12 SP5 | xen | 4.12.4_32-3.85.4 | SUSE-SU-2023:0672-1 |
| SLES for SAP 12 SP4 | xen | 4.11.4_36-2.86.1 | SUSE-SU-2023:0136-1 |
| SLE Real Time 15 SP3 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
| SLE Micro 5.3 | xen | 4.16.3_02-150400.4.19.1 | SUSE-SU-2023:0169-1 |
| SLE Micro 5.2 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
| SLE Micro 5.1 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
| SLE HPC 15 SP3 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
| SLE HPC 15 SP2 | xen | 4.13.4_18-150200.3.68.1 | SUSE-SU-2023:0214-1 |
| SLE HPC 15 SP1 | xen | 4.12.4_32-150100.3.83.1 | SUSE-SU-2023:0154-1 |
| SUSE OpenStack Cloud Crowbar 9 | xen | 4.11.4_36-2.86.1 | SUSE-SU-2023:0136-1 |
| SUSE OpenStack Cloud 9 | xen | 4.11.4_36-2.86.1 | SUSE-SU-2023:0136-1 |
| SUSE Manager Server 4.2 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
| SUSE Manager Retail Branch Server 4.2 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
| SUSE Manager Proxy 4.2 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
| SUSE Enterprise Storage 7.1 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
| SUSE Enterprise Storage 7 | xen | 4.13.4_18-150200.3.68.1 | SUSE-SU-2023:0214-1 |
| SUSE Enterprise Storage 6 | xen | 4.12.4_32-150100.3.83.1 | SUSE-SU-2023:0154-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | xen | 4.16.3_02-150400.4.19.1 | SUSE-SU-2023:0169-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | xen | 4.16.3_02-150400.4.19.1 | SUSE-SU-2023:0169-1 |
| openSUSE Leap Micro 5.2 | xen | 4.14.5_10-150300.3.45.1 | SUSE-SU-2023:0170-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.16.2-r2 | — |
| Alpine v3.23 | xen | 4.16.2-r2 | — |
| Alpine v3.22 | xen | 4.16.2-r2 | — |
| Alpine v3.21 | xen | 4.16.2-r2 | — |
| Alpine v3.20 | xen | 4.16.2-r2 | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.16.2-r2 | — |
| Alpine v3.18 | xen | 4.16.2-r2 | — |
| Alpine v3.17 | xen | 4.16.2-r2 | — |
| Alpine v3.16 | xen | 4.16.2-r0 | — |
| Alpine v3.15 | xen | 4.15.4-r0 | — |
| Alpine v3.14 | xen | 4.15.4-r0 | — |
| Alpine v3.13 | xen | 4.14.5-r7 | — |
Advisories 9
- DSA-5378-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2023:0214-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0170-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0672-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0186-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0136-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0169-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0154-1 Security update for xen SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-2001 AMD Prozessor: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Mar 8, 2023
References
- https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1040
- [oss-security] 20221110 Xen Security Advisory 422 v2 (CVE-2022-23824) - x86: Multiple speculative security issues mailing-list
- FEDORA-2022-9f51d13fa3 vendor-advisory
- FEDORA-2022-53a4a5dd11 vendor-advisory
- DSA-5378 vendor-advisory
- https://security.gentoo.org/glsa/202402-07