Description
Xen 4.4.x, when running on an ARM system, does not properly check write permissions on virtual addresses, which allows local guest administrators to gain privileges via unspecified vectors.
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | xen | 4.4.0-0ubuntu5.1 | — |
References
- 1030333 vdb-entry
- http://xenbits.xen.org/xsa/advisory-98.html
- 58975 third-party-advisory
- 67819 vdb-entry
- [oss-security] 20140604 Re: Xen Security Advisory 98 - insufficient permissions checks accessing guest memory on ARM mailing-list