Description
Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest's P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings.
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 | 4.16.2+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+86-g1c354767d5-1 | DSA-5272-1 |
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 | 4.16.2_08-150400.4.16.1 | SUSE-SU-2022:4007-1 |
| SLES 15 SP3 | xen | 4.14.5_08-150300.3.40.1 | SUSE-SU-2022:3947-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.3 | xen | 4.16.2_08-150400.4.16.1 | SUSE-SU-2022:4007-1 |
| SLE Micro 5.2 | xen | 4.14.5_08-150300.3.40.1 | SUSE-SU-2022:3947-1 |
| SLE Micro 5.1 | xen | 4.14.5_08-150300.3.40.1 | SUSE-SU-2022:3947-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | xen | 4.16.2_08-150400.4.16.1 | SUSE-SU-2022:4007-1 |
| openSUSE Leap 15.3 | xen | 4.14.5_08-150300.3.40.1 | SUSE-SU-2022:3947-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.2 | xen | 4.14.5_08-150300.3.40.1 | SUSE-SU-2022:3947-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.17.0-r0 | — |
| Alpine v3.23 | xen | 4.17.0-r0 | — |
| Alpine v3.22 | xen | 4.17.0-r0 | — |
| Alpine v3.21 | xen | 4.17.0-r0 | — |
| Alpine v3.20 | xen | 4.17.0-r0 | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.17.0-r0 | — |
| Alpine v3.18 | xen | 4.17.0-r0 | — |
| Alpine v3.17 | xen | 4.16.3-r0 | — |
| Alpine v3.16 | xen | 4.16.3-r0 | — |
| Alpine v3.15 | xen | 4.15.4-r0 | — |
| Alpine v3.14 | xen | 4.15.4-r0 | — |
Advisories 4
- DSA-5272-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2022:3947-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4007-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1680 Xen / Citrix Hypervisor: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Feb 4, 2024
References
- https://xenbits.xenproject.org/xsa/advisory-409.txt
- http://xenbits.xen.org/xsa/advisory-409.html
- [oss-security] 20221011 Xen Security Advisory 409 v3 (CVE-2022-33747) - Arm: unbounded memory consumption for 2nd-level page tables mailing-list
- FEDORA-2022-5b594b82ac vendor-advisory
- DSA-5272 vendor-advisory
- FEDORA-2022-d80cc73088 vendor-advisory
- FEDORA-2022-99af00f60e vendor-advisory
- GLSA-202402-07 vendor-advisory