Description
The copy_to_user function in the PAL emulation functionality for Xen 3.1.2 and earlier, when running on ia64 systems, allows HVM guest users to access arbitrary physical memory by triggering certain mapping operations.
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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +12 | 2.6.18-53.1.6.el5 | RHSA-2008:0089 |
Advisories 1
- RHSA-2008:0089 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- 28643 third-party-advisory
- oval:org.mitre.oval:def:9840 vdb-entry signature
- http://xenbits.xensource.com/ext/ia64/xen-unstable.hg?rev/e6069a715fd7
- 26954 vdb-entry
- 28146 third-party-advisory
- 41344 vdb-entry
- RHSA-2008:0089 vendor-advisory