CVE-2010-4255: Medium severity Citrix Xen vulnerability
The fixuppagefault 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 handlegdtldtmappingfault function, which allows guest OS users to cause a denial of service (host OS BUGON) via a crafted memory access.
Affected Software
Remediation
Patch Available
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2010-4255?
CVE-2010-4255 has a severity rating that indicates it can lead to a denial of service on the host OS.
How do I fix CVE-2010-4255?
To fix CVE-2010-4255, upgrade to a version of Xen greater than 4.0.1 where the vulnerability is addressed.
Which systems are affected by CVE-2010-4255?
CVE-2010-4255 affects Xen versions 4.0.1 and earlier, specifically on 64-bit platforms with paravirtualization enabled.
What are the potential impacts of CVE-2010-4255?
The potential impacts of CVE-2010-4255 include denial of service, leading to host OS instability.
Is CVE-2010-4255 a remote vulnerability?
CVE-2010-4255 is not a remote vulnerability; it requires guest OS users to exploit it within their environment.