Description
Xen through 4.7.x allows local ARM guest OS users to cause a denial of service (host crash) via vectors involving a (1) data or (2) prefetch abort with the ESR_EL2.EA bit set.
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 | 4.8.0-1 | — |
| Debian 13 | xen | 4.8.0-1 | — |
| Debian 12 | xen | 4.8.0-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | xen | 4.6.0-1ubuntu4.3 | — |
| Ubuntu 14.04 LTS | xen | 4.4.2-0ubuntu0.14.04.9 | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.7.1-r3 | — |
| Alpine v3.23 | xen | 4.7.1-r3 | — |
| Alpine v3.22 | xen | 4.7.1-r3 | — |
| Alpine v3.21 | xen | 4.7.1-r3 | — |
| Alpine v3.20 | xen | 4.7.1-r3 | — |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.7.1-r3 | — |
| Alpine v3.18 | xen | 4.7.1-r3 | — |
| Alpine v3.17 | xen | 4.7.1-r3 | — |
| Alpine v3.16 | xen | 4.7.1-r3 | — |
| Alpine v3.15 | xen | 4.7.1-r3 | — |
| Alpine v3.14 | xen | 4.7.1-r3 | — |
| Alpine v3.13 | xen | 4.7.1-r3 | — |
| Alpine v3.12 | xen | 4.7.1-r3 | — |
| Alpine v3.11 | xen | 4.7.1-r3 | — |
| Alpine v3.10 | xen | 4.7.1-r3 | — |
| Alpine v3.9 | xen | 4.7.1-r3 | — |
| Alpine v3.8 | xen | 4.7.1-r3 | — |
| Alpine v3.7 | xen | 4.7.1-r3 | — |
| Alpine v3.6 | xen | 4.7.1-r3 | — |
| Alpine v3.5 | xen | 4.7.1-r3 | — |
| Alpine v3.4 | xen | 4.6.3-r6 | — |
| Alpine v3.3 | xen | 4.6.3-r4 | — |
References
- http://xenbits.xen.org/xsa/advisory-201.html
- GLSA-201612-56 vendor-advisory
- http://xenbits.xen.org/xsa/xsa201-3-4.7.patch
- 1037358 vdb-entry
- [oss-security] 20161129 Xen Security Advisory 201 - ARM guests may induce host asynchronous abort mailing-list
- 94581 vdb-entry
- http://xenbits.xen.org/xsa/xsa201-3.patch
- [oss-security] 20161204 Re: Xen Security Advisory 201 - ARM guests may induce host asynchronous abort mailing-list