This security bulletin contains one low risk vulnerability.
Exploit availability: NoDescription
The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.
The vulnerability exists due to an error when performing Soft Reset with kexec. A malicious guest can continuously execute kexec and prevent further domain administration, like starting new guests or adding/removing resources to or from any existing guest.
Install updates from vendor's website.Vulnerable software versions
Xen: 4.17.0External links
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.