CVE-2020-10773 Information disclosure in kernel

What is CVE-2020-10773?

CVE-2020-10773 is a medium-severity vulnerability in Linux kernel, published on 10 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A stack information leak flaw was found in s390/s390x in the Linux kernel’s memory manager functionality, where it incorrectly writes to the /proc/sys/vm/cmm_timeout file. This flaw allows a local user to see the kernel data.

Weakness: CWE-626

Which versions are affected by CVE-2020-10773?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2020-10773?

Apply the vendor's patch.

Is CVE-2020-10773 being exploited?

There is no known exploitation of CVE-2020-10773 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2020-10773, GHSA-3wp9-9gg6-rwqx, UBUNTU-CVE-2020-10773.