CVE-2010-4255: n/a vulnerability

CVE-2010-4255: The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravi...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 03:34 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2010-4255 is a Xen hypervisor flaw that can let a user inside a paravirtualized guest crash the host on affected 64-bit systems. The business impact is availability: one tenant or guest workload may disrupt other workloads sharing the same host. Exposure is most likely in legacy Xen-based virtualization using Xen 4.0.1 or earlier, 64-bit hosts, and paravirtualized guests. Downstream Red Hat and VMware advisories indicate packaged products included relevant third-party Xen updates. Treat as a legacy virtualization availability risk. It is not KEV-listed in the supplied bundle, but affected shared hosts could suffer tenant-impacting outages if still running old Xen PV configurations. Mitigation focus: Apply relevant Xen, Red Hat, or VMware vendor security updates.; Prioritize hosts running Xen 4.0.1 or earlier on x86-64.; Review whether paravirtualized guests are still required on affected hosts..

Prepared: Jun 27, 2026, 18:32 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2010-4255 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 25, 2011, 00:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.redhat.com/show_bug.cgi?id=658155CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.