Strix
26.1K

CVE-2010-4255

UnknownEPSS 0.76%

Last modified

CVE-2010-4255 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.76% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.76%

50.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
CitrixXen<= 4.0.1
CitrixXen3.0.2
CitrixXen3.0.3
CitrixXen3.0.4
CitrixXen3.1.2
CitrixXen3.1.3
CitrixXen3.1.4
CitrixXen3.2.0
CitrixXen3.2.1
CitrixXen3.2.2
CitrixXen3.2.3
CitrixXen3.3.0
CitrixXen3.3.1
CitrixXen3.3.2
CitrixXen3.4.0
CitrixXen3.4.1
CitrixXen3.4.2
CitrixXen3.4.3
CitrixXen4.0.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 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.
How severe is CVE-2010-4255?
Severity scoring for CVE-2010-4255 is pending analysis. The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.
How do I fix CVE-2010-4255?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2010-4255?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST