CVE-2020-10774

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-05-27 · updated 2026-06-17
Weakness: CWE-805

Description

A memory disclosure flaw was found in the Linux kernel's versions before 4.18.0-193.el8 in the sysctl subsystem when reading the /proc/sys/kernel/rh_features file. This flaw allows a local user to read uninitialized values from the kernel memory. The highest threat from this vulnerability is to confidentiality.

Affected products

Linux kernel: before 4.18.0-193.el8 — fixed in 4.18.0-193.el8

How to fix

Upgrade to a fixed version: Linux kernel 4.18.0-193.el8. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1846964
https://bugzilla.redhat.com/show_bug.cgi?id=1846964

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