CVE-2020-10773

Name: CVE-2020-10773
Creator: NVD / NIST
Published: 2020-09-10T17:15:27.453+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.4/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2020-10773 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. A stack information leak flaw was found in s390/s390x in the Linux kernel’s memory manager functionality, where it incorrectly writes to the /proc/sys/vm/cmm_timeout file. This flaw allows a local user to see the kernel data.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

A stack information leak flaw was found in s390/s390x in the Linux kernel’s memory manager functionality, where it incorrectly writes to the /proc/sys/vm/cmm_timeout file. This flaw allows a local user to see the kernel data.

Metrics

CVSS 3.1

4.4/10

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

EPSS Probability

0.37%

28.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-626

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	5.4.0	Rc6

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10773Issue Tracking, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b8e51a6a9db94bc1fb18ae831b3dab106b5a4b5fPatch, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10773Issue Tracking, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b8e51a6a9db94bc1fb18ae831b3dab106b5a4b5fPatch, Vendor Advisory

Timeline

Published: Sep 10, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10773?

How severe is CVE-2020-10773?

CVE-2020-10773 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10773?

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-2020-10773?

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

Scan your code now

Source: NVD / NIST