CVE-2020-29369

Name: CVE-2020-29369
Creator: NVD / NIST
Published: 2020-11-28T07:15:11.537+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2020-29369 is a high-severity vulnerability rated 7/10 on the CVSS scale. An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.

Metrics

CVSS 3.1

7/10

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

EPSS Probability

0.45%

35.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-362

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.20, < 5.4.54
Linux	Linux Kernel	>= 5.5, < 5.7.11
Netapp	Hci Management Node	All versions
Netapp	Solidfire	All versions
Netapp	Hci Compute Node	All versions
Netapp	Hci Storage Node	All versions

References

http://www.openwall.com/lists/oss-security/2021/02/10/6Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/19/8Mailing List, Patch, Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=2056Exploit, Issue Tracking, Patch, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11Release Notes, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4cPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210115-0001/Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/10/6Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/19/8Mailing List, Patch, Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=2056Exploit, Issue Tracking, Patch, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11Release Notes, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4cPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210115-0001/Third Party Advisory

Timeline

Published: Nov 28, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-29369?

How severe is CVE-2020-29369?

CVE-2020-29369 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2020-29369?

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-2020-29369?

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

Scan your code now

Source: NVD / NIST