Description
An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor, resulting in a denial-of-service (crash).
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 | 4.11.1~pre.20180911.5acdd26fdc+dfsg-2 | — |
| Debian 13 | xen | 4.11.1~pre.20180911.5acdd26fdc+dfsg-2 | — |
| Debian 12 | xen | 4.11.1~pre.20180911.5acdd26fdc+dfsg-2 | — |
| Debian 9 | xen | 4.8.4+xsa273+shim4.10.1+xsa273-1+deb9u10 | DSA-4274-1 |
| Debian 8 | xen | 4.4.4lts4-0+deb8u1 | DLA-1577-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 | xen | 4.10.2_04-3.9.1 | SUSE-SU-2018:4300-1 |
| SLES 12 SP3 | xen | 4.9.3_03-3.44.2 | SUSE-SU-2018:3490-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | xen | 4.9.3_03-3.44.2 | SUSE-SU-2018:3490-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.15.1_01-1.2 | openSUSE-SU-2024:11520-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.11.1-r0 | — |
| Alpine v3.23 | xen | 4.11.1-r0 | — |
| Alpine v3.22 | xen | 4.11.1-r0 | — |
| Alpine v3.21 | xen | 4.11.1-r0 | — |
| Alpine v3.20 | xen | 4.11.1-r0 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.11.1-r0 | — |
| Alpine v3.18 | xen | 4.11.1-r0 | — |
| Alpine v3.17 | xen | 4.11.1-r0 | — |
| Alpine v3.16 | xen | 4.11.1-r0 | — |
| Alpine v3.15 | xen | 4.11.1-r0 | — |
| Alpine v3.14 | xen | 4.11.1-r0 | — |
| Alpine v3.13 | xen | 4.11.1-r0 | — |
| Alpine v3.12 | xen | 4.11.1-r0 | — |
| Alpine v3.11 | xen | 4.11.1-r0 | — |
| Alpine v3.10 | xen | 4.11.1-r0 | — |
| Alpine v3.9 | xen | 4.11.1-r0 | — |
| Alpine v3.8 | xen | 4.10.1-r3 | — |
| Alpine v3.7 | xen | 4.9.3-r0 | — |
| Alpine v3.6 | xen | 4.8.5-r0 | — |
Advisories 5
- DSA-4274-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1577-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:4300-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3490-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11520-1 xen-4.15.1_01-1.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025