CVE-2020-11884 Race condition in n/a

What is CVE-2020-11884?

CVE-2020-11884 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 29 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-362

Which versions are affected by CVE-2020-11884?

It affects 23 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Linux kernel, Netapp A700s Firmware, Netapp Active Iq Unified Manager and 17 more.

How do I fix CVE-2020-11884?

Apply the vendor's patch.

Is CVE-2020-11884 being exploited?

There is no known exploitation of CVE-2020-11884 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-11884, GHSA-grcc-xgjx-xwf8, UBUNTU-CVE-2020-11884, USN-4343-1.