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Vulnerability record · CVE-2020-16166 · published 30 July 2020

CVE-2020-16166: Linux kernel vulnerability

Linux · Linux Kernel

The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c.

3.7 CVSS 3.1 Low EPSS 5.3% · top 7.7% CWE-330 · CWE-330
3.7CVSS 3.1 base score, v2 4.3
5.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
15Affected product versions listed by NVD
30References
17 Jun 2026Last modified by NVD

Description

The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

15 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html Mailing ListThird Party Advisory
https://arxiv.org/pdf/2012.07432.pdf Technical DescriptionThird Party Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f227e3ec3b5cad859ad15666874405e8c1bbc1d4 PatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c51f8f88d705e06bd696d7510aff22b33eb8e638 PatchVendor Advisory
https://github.com/torvalds/linux/commit/f227e3ec3b5cad859ad15666874405e8c1bbc1d4 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AAPTLPAEKVAJYJ4LHN7VH4C
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MFBCLQWJI5I4G25TVJNLXLA
https://security.netapp.com/advisory/ntap-20200814-0004/ Third Party Advisory
https://usn.ubuntu.com/4525-1/ Third Party Advisory
https://usn.ubuntu.com/4526-1/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html PatchThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html Mailing ListThird Party Advisory
https://arxiv.org/pdf/2012.07432.pdf Technical DescriptionThird Party Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f227e3ec3b5cad859ad15666874405e8c1bbc1d4 PatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c51f8f88d705e06bd696d7510aff22b33eb8e638 PatchVendor Advisory
https://github.com/torvalds/linux/commit/f227e3ec3b5cad859ad15666874405e8c1bbc1d4 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AAPTLPAEKVAJYJ4LHN7VH4C
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MFBCLQWJI5I4G25TVJNLXLA
https://security.netapp.com/advisory/ntap-20200814-0004/ Third Party Advisory
https://usn.ubuntu.com/4525-1/ Third Party Advisory
https://usn.ubuntu.com/4526-1/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-16166), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.