CVE-2010-4255

CVE Details

Release Date:	2011-01-25
Impact:	Moderate	What is this?

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.

See more information about CVE-2010-4255 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v2 metrics

Base Score:	6.1
Vector String:	AV:A/AC:L/Au:N/C:N/I:N/A:C
Version:	2.0
Attack Vector:	Adjacent Network
Attack Complexity:	Low
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Complete

Errata information

Platform	Errata	Release Date
Oracle Linux version 5 (kernel)	ELSA-2011-0017	2011-01-20
Oracle Linux version 5 (ocfs2-2.6.18-238.el5)	ELSA-2011-0017	2011-01-20
Oracle Linux version 5 (oracleasm-2.6.18-238.el5)	ELSA-2011-0017	2011-01-20