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Vulnerability record · CVE-2020-11884 · published 29 April 2020

CVE-2020-11884: Linux kernel race condition vulnerability

Linux · Linux Kernel

In the Linux kernel 4.19 through 5.6.7 on the s390 platform, code execution may occur because of a race condition, as demonstrated by code in enable_sacf_uaccess in arch/s390/lib/uaccess.c that fails to protect against a concurrent page table upgrade, aka CID-3f777e19d171. A crash could also occur.

7.0 CVSS 3.1 High EPSS 0.40% · top 68.7% CWE-362 · Race condition
7.0CVSS 3.1 base score, v2 6.9
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
23Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel 4.19 through 5.6.7 on the s390 platform, code execution may occur because of a race condition, as demonstrated by code in enable_sacf_uaccess in arch/s390/lib/uaccess.c that fails to protect against a concurrent page table upgrade, aka CID-3f777e19d171. A crash could also occur.

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

Affected products

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

References

LinkTags
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=215d1f3928713d6eaec67244bcda72105b898000 Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3f777e19d171670ab558a6d5e6b1ac7f9b6c574f PatchVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TZBP2HINNAX7HKHCOUMIFV
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AQUVKC3IPUC5B374VVAZV4J
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKVJMS4GQRH5SO35WM5GINC
https://security.netapp.com/advisory/ntap-20200608-0001/ Third Party Advisory
https://usn.ubuntu.com/4342-1/ Third Party Advisory
https://usn.ubuntu.com/4343-1/ Third Party Advisory
https://usn.ubuntu.com/4345-1/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4667 Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=215d1f3928713d6eaec67244bcda72105b898000 Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3f777e19d171670ab558a6d5e6b1ac7f9b6c574f PatchVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TZBP2HINNAX7HKHCOUMIFV
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AQUVKC3IPUC5B374VVAZV4J
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKVJMS4GQRH5SO35WM5GINC
https://security.netapp.com/advisory/ntap-20200608-0001/ Third Party Advisory
https://usn.ubuntu.com/4342-1/ Third Party Advisory
https://usn.ubuntu.com/4343-1/ Third Party Advisory
https://usn.ubuntu.com/4345-1/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4667 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-11884), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.