CVE-2020-11740: Debian Linux

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.

Affected products

• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 30 only; version 31 only; version 32 only
• Opensuse Leap: version 15.1 only
• Xen Xen: from 3.2.0, up to and including 4.13.0; version 4.13.0 only

Published 2020-04-14. Last modified 2026-06-17.