SB2023081202 - Debian update for linux

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Main Vulnerability Database SB2023081202

SB2023081202 - Debian update for linux

Published: August 12, 2023

Security Bulletin ID SB2023081202
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Information exposure through microarchitectural state after transient execution (CVE-ID: CVE-2022-40982)

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to the way data is shared between threads whereby the AVX GATHER instructions on Intel processors can forward the content of stale vector registers to dependent instructions. A malicious guest can infer data from different contexts on the same core and execute arbitrary code with elevated privileges.


2) Information disclosure (CVE-ID: CVE-2023-20569)

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to a side channel issue in AMD CPUs. A remote user can influence the return address prediction and gain unauthorized access to sensitive information on the system.


Remediation

Install update from vendor's website.

References