CVE-2020-36385

Name: CVE-2020-36385
Creator: NVD / NIST
Published: 2021-06-07T12:15:08.417+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.48%

Last modified Jun 17, 2026

CVE-2020-36385 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.. EPSS estimates a 1.48% chance of exploitation in the next 30 days.

Description

An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

1.48%

70.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 5.10	—
Netapp	H300s Firmware	All versions	—
Netapp	H500s Firmware	All versions	—
Netapp	H700s Firmware	All versions	—
Netapp	H300e Firmware	All versions	—
Netapp	H500e Firmware	All versions	—
Netapp	H700e Firmware	All versions	—
Netapp	H410s Firmware	All versions	—
Netapp	H410c Firmware	All versions	—
Starwindsoftware	Starwind San \& Nas	v8r12	—
Starwindsoftware	Starwind Virtual San	v8	Build14338

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10Release Notes, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5449e74802c1112dea984aec8af7a33c4516af1Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210720-0004/Third Party Advisory
https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-ucma_close-2Patch, Third Party Advisory
https://syzkaller.appspot.com/bug?id=457491c4672d7b52c1007db213d93e47c711fae6Patch, Third Party Advisory
https://www.starwindsoftware.com/security/sw-20220802-0002/Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10Release Notes, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5449e74802c1112dea984aec8af7a33c4516af1Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210720-0004/Third Party Advisory
https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-ucma_close-2Patch, Third Party Advisory
https://syzkaller.appspot.com/bug?id=457491c4672d7b52c1007db213d93e47c711fae6Patch, Third Party Advisory
https://www.starwindsoftware.com/security/sw-20220802-0002/Third Party Advisory

Timeline

Published: Jun 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-36385?

How severe is CVE-2020-36385?

CVE-2020-36385 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.

How do I fix CVE-2020-36385?

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-2020-36385?

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

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Source: NVD / NIST