Description
xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Xen | xen | 4.12.x, 4.13.x – < unspecified | 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 | 4.14.3-1 | — |
| Debian 13 | xen | 4.14.3-1 | — |
| Debian 12 | xen | 4.14.3-1 | — |
| Debian 11 | xen | 4.14.3-1~deb11u1 | DSA-4977-1 |
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-r2 | — |
| Alpine v3.23 | xen | 4.15.0-r2 | — |
| Alpine v3.22 | xen | 4.15.0-r2 | — |
| Alpine v3.21 | xen | 4.15.0-r2 | — |
| Alpine v3.20 | xen | 4.15.0-r2 | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.15.0-r2 | — |
| Alpine v3.18 | xen | 4.15.0-r2 | — |
| Alpine v3.17 | xen | 4.15.0-r2 | — |
| Alpine v3.16 | xen | 4.15.0-r2 | — |
| Alpine v3.15 | xen | 4.15.0-r2 | — |
| Alpine v3.14 | xen | 4.15.0-r2 | — |
| Alpine v3.13 | xen | 4.14.2-r0 | — |
| Alpine v3.12 | xen | 4.13.3-r2 | — |
| Alpine v3.11 | xen | 4.13.3-r2 | — |
Advisories 7
- DSA-4977-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- 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-383.txt
- FEDORA-2021-4f129cc0c1 vendor-advisory
- FEDORA-2021-d68ed12e46 vendor-advisory
- DSA-4977 vendor-advisory
- FEDORA-2021-081f9bf5d2 vendor-advisory
- GLSA-202208-23 vendor-advisory