CVE-2020-10774
Publication date 27 May 2021
Last updated 25 August 2025
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| linux-aws | 20.04 LTS focal |
Not affected
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Ignored was not-affected (RHEL 8 kernel only) ESM criteria | |
| linux-aws-5.0 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Ignored end of life, was not-affected | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-gcp | 20.04 LTS focal |
Not affected
|
| 18.04 LTS bionic | Ignored end of life, was not-affected | |
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release | |
| linux-gcp-4.15 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-oem-osp1 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-raspi | 20.04 LTS focal |
Not affected
|
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux | 20.04 LTS focal |
Not affected
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Ignored was not-affected (RHEL 8 kernel only) ESM criteria | |
| linux-aws-5.3 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-aws-hwe | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release | |
| linux-azure | 20.04 LTS focal |
Not affected
|
| 18.04 LTS bionic | Ignored end of life, was not-affected | |
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Ignored was not-affected (RHEL 8 kernel only) ESM criteria | |
| linux-azure-4.15 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-azure-5.3 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-azure-edge | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Ignored end of life, was not-affected | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-gcp-5.3 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-gcp-edge | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Ignored end of life, was not-affected | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-gke-4.15 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-gke-5.0 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-gke-5.3 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-hwe | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release | |
| linux-hwe-edge | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Ignored end of life, was not-affected | |
| 16.04 LTS xenial | Ignored end of life, was not-affected | |
| 14.04 LTS trusty | Not in release | |
| linux-kvm | 20.04 LTS focal |
Not affected
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release | |
| linux-lts-trusty | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-lts-xenial | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Ignored was not-affected (RHEL 8 kernel only) ESM criteria | |
| linux-oem | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Ignored end of standard support, was not-affected | |
| 14.04 LTS trusty | Not in release | |
| linux-oem-5.6 | 20.04 LTS focal |
Not affected
|
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-oracle | 20.04 LTS focal |
Not affected
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release | |
| linux-oracle-5.0 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Ignored end of life, was not-affected | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-oracle-5.3 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-raspi2 | 20.04 LTS focal | Ignored replaced by linux-raspi |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release | |
| linux-raspi2-5.3 | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-riscv | 20.04 LTS focal |
Not affected
|
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| linux-snapdragon | 20.04 LTS focal | Not in release |
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release |
Notes
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.5 · Medium
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |