Description
xen/arm: Boot modules are not scrubbed The bootloader will load boot modules (e.g. kernel, initramfs...) in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the allocator. Unfortunately, it was discovered that modules will not be scrubbed on Arm.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Xen | xen | 4.15.x, 4.13.x – < unspecified, xen-unstable, 4.12.x | unspecified |
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 | — |
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 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | xen | 4.12.4_12-3.52.1 | SUSE-SU-2021:2925-1 |
| SLES for SAP 12 SP5 | xen | 4.12.4_12-3.49.1 | SUSE-SU-2021:2924-1 |
| 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 |
| 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 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 6
- SUSE-SU-2021:2924-1 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
- 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-2021:2923-1 Security update for xen SUSE / openSUSE Security Updates · May 2, 2025
References
- https://xenbits.xenproject.org/xsa/advisory-372.txt
- GLSA-202107-30 vendor-advisory