Unrated severityNVD Advisory· Published Jan 25, 2011· Updated Jun 16, 2026
CVE-2010-4255
CVE-2010-4255
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
20cpe:2.3:a:citrix:xen:*:*:*:*:*:*:*:*+ 18 more
- cpe:2.3:a:citrix:xen:*:*:*:*:*:*:*:*range: <=4.0.1
- cpe:2.3:a:citrix:xen:3.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.1.3:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.1.4:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:3.4.3:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xen:4.0.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
9- lists.xensource.com/archives/html/xen-devel/2010-11/msg01650.htmlnvdPatch
- openwall.com/lists/oss-security/2010/11/30/5nvdPatch
- openwall.com/lists/oss-security/2010/11/30/8nvdPatch
- bugzilla.redhat.com/show_bug.cginvdPatch
- secunia.com/advisories/42884nvd
- secunia.com/advisories/46397nvd
- www.redhat.com/support/errata/RHSA-2011-0017.htmlnvd
- www.securityfocus.com/archive/1/520102/100/0/threadednvd
- www.vmware.com/security/advisories/VMSA-2011-0012.htmlnvd
News mentions
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