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Fencer Vulns
medium 5.5

CVE-2020-11740 json

An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive informati…

published 2020-04-14 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4082

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

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.

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.11.4-1

debian advisories DEBIAN-CVE-2020-11740

  • xen Ubuntu 20.04 LTS 4.11.3+24-g14b62ab3e5-1ubuntu2.3

ubuntu advisories UBUNTU-CVE-2020-11740

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • xen SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +1 more 4.7.6_08-43.64.1
  • xen SLE Point of Sale 11 SP3 4.2.5_22-45.36.1
  • xen SLES for SAP 15, SLE High Performance Computing 15-LTSS, SLE High Performance Computing 15-ESPOS 4.10.4_10-3.31.1
  • xen SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.9.4_06-3.62.1
  • xen SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 4.12.2_04-3.11.1
  • xen SLES for SAP 12 SP4, SLES 12 SP4, SLE Software Development Kit 12 SP4 4.11.3_04-2.23.1
  • xen SLE Module for Server Applications 15 SP1, SLE Module for Basesystem 15 SP1 4.12.2_04-3.15.1
  • xen SLES 11 SP4-LTSS 4.4.4_42-61.52.1

suse advisories SUSE-SU-2020:2234-1SUSE-SU-2020:14448-1SUSE-SU-2020:14444-1SUSE-SU-2020:1634-1SUSE-SU-2020:1630-1SUSE-SU-2020:1139-1

  • xen openSUSE Tumbleweed 4.15.1_01-1.2
  • xen openSUSE Leap 15.1 4.12.2_04-lp151.2.15.1

opensuse advisories openSUSE-SU-2024:11520-1openSUSE-SU-2020:0599-1

  • xen Alpine 3.10 4.12.2-r1
  • xen Alpine 3.11 4.13.0-r1
  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 4.13.0-r3
  • xen Alpine 3.8 4.10.4-r3
  • xen Alpine 3.9 4.11.3-r2

alpine advisories ALPINE-CVE-2020-11740

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-11740 updated cvss 7.5

xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313)

  • Red Hat Enterprise Linux 5 kernel-xen
    affected: no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-212 Improper Removal of Sensitive Information Before Storage or Transfer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.