CVE-2020-10769

Name: CVE-2020-10769
Creator: NVD / NIST
Published: 2020-06-26T16:15:12.14+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.49%

Last modified Jun 17, 2026

CVE-2020-10769 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A buffer over-read flaw was found in RH kernel versions before 5.0 in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. When a payload longer than 4 bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat, leading to a system crash. EPSS estimates a 0.49% chance of exploitation in the next 30 days.

Description

A buffer over-read flaw was found in RH kernel versions before 5.0 in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. When a payload longer than 4 bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat, leading to a system crash. This flaw allows a local attacker with user privileges to cause a denial of service.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.49%

38.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Redhat	Enterprise Linux	7.0
Opensuse	Leap	15.1

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlMailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1708775%3B
https://lkml.org/lkml/2019/1/21/675Exploit, Mailing List, Patch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlMailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1708775%3B
https://lkml.org/lkml/2019/1/21/675Exploit, Mailing List, Patch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html

Timeline

Published: Jun 26, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10769?

How severe is CVE-2020-10769?

CVE-2020-10769 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10769?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10769?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST