CVE-2010-4255
MEDIUM · CVSS 6.1EPSS 0.8%EU EUVD
The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access.
Key facts
- CVSS score
- 6.1 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:A/AC:L/Au:N/C:N/I:N/A:C- EPSS score
- 0.8% (56th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2010-4228)
- Published
- January 25, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2010-4228 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
- citrix / xen
References
- http://lists.xensource.com/archives/html/xen-devel/2010-11/msg01650.html(Patch)
- http://openwall.com/lists/oss-security/2010/11/30/5(Patch)
- http://openwall.com/lists/oss-security/2010/11/30/8(Patch)
- http://secunia.com/advisories/42884
- http://secunia.com/advisories/46397
- http://www.redhat.com/support/errata/RHSA-2011-0017.html
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- https://bugzilla.redhat.com/show_bug.cgi?id=658155(Patch)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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