CVE-2015-7812 describes a denial-of-service vulnerability in Xen hypervisor versions 4.4.x through 4.6.x. A local guest user can exploit a flaw in the hypercall_create_continuation function to crash the host system via a preemptible hypercall to the multicall interface. The vulnerability has a CVSS score of 4.9, indicating a medium severity. It requires local access (AV:L) and low attack complexity (AC:L), leading to a complete denial of service (A:C) without impacting confidentiality or integrity. There is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage are minimal, suggesting low general awareness and limited interest in this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.4.0CPE matchmatch criteria | cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:* | ||
4.4.1CPE matchmatch criteria | cpe:2.3:o:xen:xen:4.4.1:-:*:*:*:*:*:* | ||
4.4.2CPE matchmatch criteria | cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:* | ||
4.4.3CPE matchmatch criteria | cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:* | ||
4.5.0CPE matchmatch criteria | cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:L/AC:L/Au:N/C:N/I:N/A:C
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.