Description
Xen 3.0.3 through 4.1.x (possibly 4.1.6.1), 4.2.x (possibly 4.2.3), and 4.3.x (possibly 4.3.1) does not properly prevent access to hypercalls, which allows local guest users to gain privileges via a crafted application running in ring 1 or 2.
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 +11 | 2.6.18-371.6.1.el5 | RHSA-2014:0285 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.7.0_12-1.3 | openSUSE-SU-2024:10196-1 |
Advisories 2
- RHSA-2014:0285 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- openSUSE-SU-2024:10196-1 xen-4.7.0_12-1.3 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- SUSE-SU-2014:0470 vendor-advisory
- RHSA-2014:0285 vendor-advisory
- GLSA-201407-03 vendor-advisory
- [oss-security] 20131126 Xen Security Advisory 76 (CVE-2013-4554) - Hypercalls exposed to privilege rings 1 and 2 of HVM guests mailing-list
- SUSE-SU-2014:0372 vendor-advisory
- SUSE-SU-2014:0446 vendor-advisory
- SUSE-SU-2014:0411 vendor-advisory
- openSUSE-SU-2013:1876 vendor-advisory