Description
x86: speculative vulnerability in 32bit SYSCALL path Due to an oversight in the very original Spectre/Meltdown security work (XSA-254), one entrypath performs its speculation-safety actions too late. In some configurations, there is an unprotected RET instruction which can be attacked with a variety of speculative attacks.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Xen | xen | — | — |
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 | 4.17.0+74-g3eac216e6e-1 | — |
| Debian 13 | xen | 4.17.0+74-g3eac216e6e-1 | — |
| Debian 12 | xen | 4.17.0+74-g3eac216e6e-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_06-150400.4.25.1 | SUSE-SU-2023:0848-1 |
| SLES 15 SP3 | xen | 4.14.5_12-150300.3.48.1 | SUSE-SU-2023:0847-1 |
| SLES 15 SP2 | xen | 4.13.4_20-150200.3.71.1 | SUSE-SU-2023:0862-1 |
| SLES 15 SP1 | xen | 4.12.4_34-150100.3.86.1 | SUSE-SU-2023:0858-1 |
| SLES 12 SP5 | xen | 4.12.4_34-3.88.1 | SUSE-SU-2023:0845-1 |
Show 21 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | xen | 4.11.4_38-2.89.1 | SUSE-SU-2023:0859-1 |
| SLES 12 SP2 | xen | 4.7.6_32-43.104.1 | SUSE-SU-2023:0846-1 |
| SLES for SAP 15 SP3 | xen | 4.14.5_12-150300.3.48.1 | SUSE-SU-2023:0847-1 |
| SLES for SAP 15 SP2 | xen | 4.13.4_20-150200.3.71.1 | SUSE-SU-2023:0862-1 |
| SLES for SAP 15 SP1 | xen | 4.12.4_34-150100.3.86.1 | SUSE-SU-2023:0858-1 |
| SLES for SAP 12 SP5 | xen | 4.12.4_34-3.88.1 | SUSE-SU-2023:0845-1 |
| SLES for SAP 12 SP4 | xen | 4.11.4_38-2.89.1 | SUSE-SU-2023:0859-1 |
| SLE Real Time 15 SP3 | xen | 4.14.5_12-150300.3.48.1 | SUSE-SU-2023:0847-1 |
| SLE Micro 5.4 | xen | 4.16.3_06-150400.4.25.1 | SUSE-SU-2023:0848-2 |
| SLE Micro 5.3 | xen | 4.16.3_06-150400.4.25.1 | SUSE-SU-2023:0848-1 |
| SLE Micro 5.2 | xen | 4.14.5_12-150300.3.48.1 | SUSE-SU-2023:0847-1 |
| SLE Micro 5.1 | xen | 4.14.5_12-150300.3.48.1 | SUSE-SU-2023:0847-1 |
| SLE HPC 15 SP3 | xen | 4.14.5_12-150300.3.48.1 | SUSE-SU-2023:0847-1 |
| SLE HPC 15 SP2 | xen | 4.13.4_20-150200.3.71.1 | SUSE-SU-2023:0862-1 |
| SLE HPC 15 SP1 | xen | 4.12.4_34-150100.3.86.1 | SUSE-SU-2023:0858-1 |
| SUSE OpenStack Cloud Crowbar 9 | xen | 4.11.4_38-2.89.1 | SUSE-SU-2023:0859-1 |
| SUSE OpenStack Cloud 9 | xen | 4.11.4_38-2.89.1 | SUSE-SU-2023:0859-1 |
| SUSE Manager Server 4.2 | xen | 4.14.5_12-150300.3.48.1 | SUSE-SU-2023:0847-1 |
| SUSE Manager Proxy 4.2 | xen | 4.14.5_12-150300.3.48.1 | SUSE-SU-2023:0847-1 |
| SUSE Enterprise Storage 7.1 | xen | 4.14.5_12-150300.3.48.1 | SUSE-SU-2023:0847-1 |
| SUSE Enterprise Storage 7 | xen | 4.13.4_20-150200.3.71.1 | SUSE-SU-2023:0862-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.17.0_06-1.1 | openSUSE-SU-2024:12833-1 |
| openSUSE Leap 15.4 | xen | 4.16.3_06-150400.4.25.1 | SUSE-SU-2023:0848-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | xen | 4.16.3_06-150400.4.25.1 | SUSE-SU-2023:0848-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.17.0-r5 | — |
| Alpine v3.23 | xen | 4.17.0-r5 | — |
| Alpine v3.22 | xen | 4.17.0-r5 | — |
| Alpine v3.21 | xen | 4.17.0-r5 | — |
| Alpine v3.20 | xen | 4.17.0-r5 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.17.0-r5 | — |
| Alpine v3.18 | xen | 4.17.0-r5 | — |
| Alpine v3.17 | xen | 4.16.4-r0 | — |
| Alpine v3.16 | xen | 4.16.4-r0 | — |
| Alpine v3.15 | xen | 4.15.5-r0 | — |
Advisories 11
- DSA-5378-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2023:0859-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0858-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0847-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0862-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0846-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0845-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12833-1 xen-4.17.0_06-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0848-1 Security update for xen SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2023:0848-2 Security update for xen SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-0703 Xen: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 4, 2024
References
- https://xenbits.xenproject.org/xsa/advisory-429.txt
- [oss-security] 20230321 Xen Security Advisory 429 v3 (CVE-2022-42331) - x86: speculative vulnerability in 32bit SYSCALL path mailing-list
- http://xenbits.xen.org/xsa/advisory-429.html
- FEDORA-2023-703f133eb3 vendor-advisory
- FEDORA-2023-da8315e641 vendor-advisory
- DSA-5378 vendor-advisory
- https://security.gentoo.org/glsa/202402-07