CVE-2010-4255

Xen < 4.0.1 - Denial of Service via Paravirtualization Memory Access

Title source: llm
STIX 2.1

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.

References (9)

Core 9
Core References
Patch mailing-list x_refsource_mlist
http://openwall.com/lists/oss-security/2010/11/30/8
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/520102/100/0/threaded
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2011-0017.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/46397
Patch mailing-list x_refsource_mlist
http://openwall.com/lists/oss-security/2010/11/30/5
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/42884

Scores

EPSS 0.0082
EPSS Percentile 74.6%

Details

Status published
Products (19)
citrix/xen 3.0.2
citrix/xen 3.0.3
citrix/xen 3.0.4
citrix/xen 3.1.2
citrix/xen 3.1.3
citrix/xen 3.1.4
citrix/xen 3.2.0
citrix/xen 3.2.1
citrix/xen 3.2.2
citrix/xen 3.2.3
... and 9 more
Published Jan 25, 2011
Tracked Since Feb 18, 2026