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CVE-2010-4255

The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms,...

6.1 MediumFix available

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.

Exploit likelihood

0.77%Down 0.8 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 6.1

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.

Record
CVE-2010-4255
CVSS 2.0
6.1 MediumAV:A/AC:L/Au:N/C:N/I:N/A:C
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2010-4255
Updated
2026-11-02
EUVDEUVD-2010-4228 No score

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.

Record
EUVD-2010-4228
Updated
2026-11-03
GitHub AdvisoriesGHSA-3x4p-cw57-cgf8 No score

The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms,...

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.

Record
GHSA-3x4p-cw57-cgf8
Updated
2026-11-02
OSV No score

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.

Record
CVE-2010-4255
Updated
2026-11-02
OSVDEBIAN-CVE-2010-4255 No score

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.

Record
DEBIAN-CVE-2010-4255
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
xen
Debian:12
 before 4.0.1-2
4.0.1-2
xen
Debian:13
 before 4.0.1-2
4.0.1-2
xen
Debian:14
 before 4.0.1-2
4.0.1-2
kernel
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-PAE
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-debug
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
Show 26 moreShow less
Affected packages
PackageAffectedFixed
kernel-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-doc
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-headers
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-xen
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-PAE
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-debug
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-doc
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-headers
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-kdump
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-kdump-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-kdump-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-xen
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 13 CVEs
 before 0:2.6.18-238.el5
0:2.6.18-238.el5

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2010-4255 is a medium vulnerability (CVSS 6.1) in Citrix Xen, published January 25, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.77%, the 55th percentile. Fixed in xen 4.0.1-2.

References

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Left out here: 158 references. The JSON record has them.

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