Description
Xen through 4.8.x does not validate a vCPU array index upon the sending of an SGI, which allows guest OS users to cause a denial of service (hypervisor crash), aka XSA-225.
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 | 4.8.1-1+deb9u3 | — |
| Debian 13 | xen | 4.8.1-1+deb9u3 | — |
| Debian 12 | xen | 4.8.1-1+deb9u3 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | xen | 4.6.5-0ubuntu1.2 | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.9.0-r0 | — |
| Alpine v3.23 | xen | 4.9.0-r0 | — |
| Alpine v3.22 | xen | 4.9.0-r0 | — |
| Alpine v3.21 | xen | 4.9.0-r0 | — |
| Alpine v3.20 | xen | 4.9.0-r0 | — |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.9.0-r0 | — |
| Alpine v3.18 | xen | 4.9.0-r0 | — |
| Alpine v3.17 | xen | 4.9.0-r0 | — |
| Alpine v3.16 | xen | 4.9.0-r0 | — |
| Alpine v3.15 | xen | 4.9.0-r0 | — |
| Alpine v3.14 | xen | 4.9.0-r0 | — |
| Alpine v3.13 | xen | 4.9.0-r0 | — |
| Alpine v3.12 | xen | 4.9.0-r0 | — |
| Alpine v3.11 | xen | 4.9.0-r0 | — |
| Alpine v3.10 | xen | 4.9.0-r0 | — |
| Alpine v3.9 | xen | 4.9.0-r0 | — |
| Alpine v3.8 | xen | 4.9.0-r0 | — |
| Alpine v3.7 | xen | 4.9.0-r0 | — |
| Alpine v3.6 | xen | 4.8.2-r0 | — |
| Alpine v3.5 | xen | 4.7.3-r0 | — |
| Alpine v3.4 | xen | 4.6.6-r0 | — |
| Alpine v3.3 | xen | 4.6.6-r0 | — |
References
- 1038735 vdb-entry
- 99160 vdb-entry
- GLSA-201708-03 vendor-advisory
- https://xenbits.xen.org/xsa/advisory-225.html