CVE-2020-11884

HIGH

Linux Kernel 4.19-5.6.7 on s390 - Race Condition in Page Table Handling

Title source: llm
STIX 2.1

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.

References (10)

Core 10
Core References
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4667
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4343-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4345-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4342-1/
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20200608-0001/

Scores

CVSS v3 7.0
EPSS 0.0006
EPSS Percentile 19.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-362
Status published
Products (28)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.10
canonical/ubuntu_linux 20.04
debian/debian_linux 10.0
fedoraproject/fedora 30
fedoraproject/fedora 31
fedoraproject/fedora 32
linux/linux_kernel 4.15 - 4.19.119
netapp/a700s_firmware
... and 18 more
Published Apr 29, 2020
Tracked Since Feb 18, 2026