PT-2021-9175 · Linux+4 · Linux Kernel+4

Alex · Published 2018-08-21 · Updated 2021-06-08 · CVE-2020-10774

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.18.0-193.el8

Description A memory disclosure flaw was found in the Linux kernel's 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, posing a threat to confidentiality.

Recommendations For Linux kernel versions prior to 4.18.0-193.el8, update to version 4.18.0-193.el8 or later to resolve the issue. As a temporary workaround, consider restricting access to the /proc/sys/kernel/rh features file to minimize the risk of exploitation.

Fix

Weakness Enumeration

CWE-805

Related Identifiers

ALSA-2020:4431

ALT-PU-2018-2192

ALT-PU-2018-2210

ALT-PU-2019-1433

CESA-2020_4431

CESA-2020_4609

CVE-2020-10774

RHSA-2020:4431

RHSA-2020:4609

RHSA-2020_4431

RHSA-2020_4609

Affected Products

Alt Linux

Almalinux

Centos

Linux Kernel

Red Hat

References · 55

• https://osv.dev/vulnerability/UBUNTU-CVE-2020-10774 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2020-4431.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-10774 · Security Note
• https://osv.dev/vulnerability/CVE-2020-10774 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2020:4431 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-10774 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-10774 · Security Note
• https://vulners.com/cve/CVE-2019-19062 · Note
• https://vulners.com/cve/CVE-2019-20636 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=1846964 · Note
• https://vulners.com/cve/CVE-2020-8648 · Note
• https://vulners.com/cve/CVE-2020-0305 · Note
• https://vulners.com/cve/CVE-2019-19602 · Note
• https://vulners.com/cve/CVE-2019-19770 · Note
• https://vulners.com/cve/CVE-2019-20054 · Note