CVE-2018-19965 is a denial-of-service vulnerability affecting Xen versions through 4.11.x, including various Citrix and Debian products utilizing Xen. A 64-bit PV guest OS user can crash the host OS due to an incorrect Meltdown mitigation causing a general protection fault with non-canonical addresses during TLB flushing. Rated Medium severity (CVSS 5.6), it requires local access with high attack complexity, but could lead to a complete host system shutdown. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 4.11.1CPE matchmatch criteria | cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* | ||
7.0CPE matchmatch criteria | cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:* | ||
7.1CPE matchmatch criteria | cpe:2.3:a:citrix:xenserver:7.1:cu1:*:*:ltsr:*:*:* | ||
7.5CPE matchmatch criteria | cpe:2.3:a:citrix:xenserver:7.5:*:*:*:*:*:*:* | ||
7.6CPE matchmatch criteria | cpe:2.3:a:citrix:xenserver:7.6:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.