Description
Observable response discrepancy in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Intel(R) Processors | See references | — |
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 | 4.14.2+25-gb6a8c4f72d-1 | — |
| Debian 13 | xen | 4.14.2+25-gb6a8c4f72d-1 | — |
| Debian 12 | xen | 4.14.2+25-gb6a8c4f72d-1 | — |
| Debian 10 | xen | 4.11.4+107-gef32c7afa2-1 | DSA-4931-1 |
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 SP3 | xen | 4.14.2_04-3.9.1 | SUSE-SU-2021:2923-1 |
| SLES 15 SP2 | xen | 4.13.3_02-3.34.1 | SUSE-SU-2021:2922-1 |
| SLES 15 SP1 | xen | 4.12.4_12-3.52.1 | SUSE-SU-2021:2925-1 |
| SLES 12 SP5 | xen | 4.12.4_12-3.49.1 | SUSE-SU-2021:2924-1 |
| SLES 12 SP4 | xen | 4.11.4_20-2.60.1 | SUSE-SU-2021:2955-1 |
Show 20 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | xen | 4.9.4_20-3.91.1 | SUSE-SU-2021:2957-1 |
| SLES 12 SP2 | xen | 4.7.6_16-43.79.5 | SUSE-SU-2021:3322-1 |
| SLES 11 SP4 | xen | 4.4.4_50-61.67.1 | SUSE-SU-2021:14848-1 |
| SLES for SAP 15 SP1 | xen | 4.12.4_12-3.52.1 | SUSE-SU-2021:2925-1 |
| SLES for SAP 15 | xen | 4.10.4_26-3.61.1 | SUSE-SU-2021:2943-1 |
| SLES for SAP 12 SP5 | xen | 4.12.4_12-3.49.1 | SUSE-SU-2021:2924-1 |
| SLES for SAP 12 SP4 | xen | 4.11.4_20-2.60.1 | SUSE-SU-2021:2955-1 |
| SLES for SAP 12 SP3 | xen | 4.9.4_20-3.91.1 | SUSE-SU-2021:2957-1 |
| SLE Micro 5.0 | xen | 4.13.3_02-3.34.1 | SUSE-SU-2021:2922-1 |
| SLE HPC 15 SP1 | xen | 4.12.4_12-3.52.1 | SUSE-SU-2021:2925-1 |
| SLE HPC 15 | xen | 4.10.4_26-3.61.1 | SUSE-SU-2021:2943-1 |
| SUSE OpenStack Cloud Crowbar 9 | xen | 4.11.4_20-2.60.1 | SUSE-SU-2021:2955-1 |
| SUSE OpenStack Cloud Crowbar 8 | xen | 4.9.4_20-3.91.1 | SUSE-SU-2021:2957-1 |
| SUSE OpenStack Cloud 9 | xen | 4.11.4_20-2.60.1 | SUSE-SU-2021:2955-1 |
| SUSE OpenStack Cloud 8 | xen | 4.9.4_20-3.91.1 | SUSE-SU-2021:2957-1 |
| SUSE Manager Server 4.0 | xen | 4.12.4_12-3.52.1 | SUSE-SU-2021:2925-1 |
| SUSE Manager Retail Branch Server 4.0 | xen | 4.12.4_12-3.52.1 | SUSE-SU-2021:2925-1 |
| SUSE Manager Proxy 4.0 | xen | 4.12.4_12-3.52.1 | SUSE-SU-2021:2925-1 |
| SUSE HPE Helion OpenStack 8 | xen | 4.9.4_20-3.91.1 | SUSE-SU-2021:2957-1 |
| SUSE Enterprise Storage 6 | xen | 4.12.4_12-3.52.1 | SUSE-SU-2021:2925-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | xen | 4.14.2_04-3.9.1 | openSUSE-SU-2021:2923-1 |
| openSUSE Leap 15.2 | xen | 4.13.3_02-lp152.2.27.1 | openSUSE-SU-2021:1236-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.15.0-r1 | — |
| Alpine v3.23 | xen | 4.15.0-r1 | — |
| Alpine v3.22 | xen | 4.15.0-r1 | — |
| Alpine v3.21 | xen | 4.15.0-r1 | — |
| Alpine v3.20 | xen | 4.15.0-r1 | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.15.0-r1 | — |
| Alpine v3.18 | xen | 4.15.0-r1 | — |
| Alpine v3.17 | xen | 4.15.0-r1 | — |
| Alpine v3.16 | xen | 4.15.0-r1 | — |
| Alpine v3.15 | xen | 4.15.0-r1 | — |
| Alpine v3.14 | xen | 4.15.0-r1 | — |
| Alpine v3.13 | xen | 4.14.1-r3 | — |
| Alpine v3.12 | xen | 4.13.3-r1 | — |
| Alpine v3.11 | xen | 4.13.3-r1 | — |
Advisories 14
- DSA-4931-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2021:2955-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2924-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3322-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2922-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2943-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2957-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2923-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1236-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2925-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:14848-1 Security update for xen SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2021:2923-1 Security update for xen SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-1463 Intel Prozessoren: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 26, 2024
- ICSA-23-122-01 Mitsubishi Electric Factory Automation Products CISA ICS & IT advisories · May 2, 2023
References
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00516.html
- [oss-security] 20210610 Xen Security Advisory 375 v4 (CVE-2021-0089,CVE-2021-26313) - Speculative Code Store Bypass mailing-list
- [oss-security] 20210610 Re: Xen Security Advisory 375 v3 (CVE-2021-0089,CVE-2021-26313) - Speculative Code Store Bypass mailing-list
- [oss-security] 20210610 Re: Xen Security Advisory 375 v3 (CVE-2021-0089,CVE-2021-26313) - Speculative Code Store Bypass mailing-list
- DSA-4931 vendor-advisory
- FEDORA-2021-41d4347447 vendor-advisory
- FEDORA-2021-993693c914 vendor-advisory
- GLSA-202107-30 vendor-advisory