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Vulnerability record · CVE-2020-36385 · published 7 June 2021

CVE-2020-36385: Linux kernel use after free vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 1.5% · top 27.2% CWE-416 · Use after free
7.8CVSS 3.1 base score, v2 6.8
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
11Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

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.

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

Affected products

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

References

LinkTags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10 Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5449e74802c1112dea984aec8af7a33c4516af1 PatchVendor 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-2 PatchThird Party Advisory
https://syzkaller.appspot.com/bug?id=457491c4672d7b52c1007db213d93e47c711fae6 PatchThird Party Advisory
https://www.starwindsoftware.com/security/sw-20220802-0002/ Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10 Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5449e74802c1112dea984aec8af7a33c4516af1 PatchVendor 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-2 PatchThird Party Advisory
https://syzkaller.appspot.com/bug?id=457491c4672d7b52c1007db213d93e47c711fae6 PatchThird Party Advisory
https://www.starwindsoftware.com/security/sw-20220802-0002/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-36385), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.