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CVE-2020-12912

Status Candidate

Overview

A potential vulnerability in the AMD extension to Linux "hwmon" service may allow an attacker to use the Linux-based Running Average Power Limit (RAPL) interface to show various side channel attacks. In line with industry partners, AMD has updated the RAPL interface to require privileged access.

Related Files

Ubuntu Security Notice USN-4678-1
Posted Jan 6, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4678-1 - It was discovered that the AMD Running Average Power Limit driver in the Linux kernel did not properly restrict access to power data. A local attacker could possibly use this to expose sensitive information. Jann Horn discovered that the io_uring subsystem in the Linux kernel did not properly perform reference counting in some situations. A local attacker could use this to expose sensitive information or possibly escalate privileges. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-12912, CVE-2020-29534
MD5 | b3036de92a3edb42e7057a8095180d7c
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