Information Exposure Affecting rv package, versions <0:5.14.0-362.8.1.el9_3


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.14% (35th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Information Exposure vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CENTOS9-RV-6056149
  • published12 Nov 2023
  • disclosed23 Jun 2023

Introduced: 23 Jun 2023

CVE-2023-3640  (opens in a new tab)
CWE-200  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

Upgrade Centos:9 rv to version 0:5.14.0-362.8.1.el9_3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rv package and not the rv package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

A possible unauthorized memory access flaw was found in the Linux kernel's cpu_entry_area mapping of X86 CPU data to memory, where a user may guess the location of exception stacks or other important data. Based on the previous CVE-2023-0597, the 'Randomize per-cpu entry area' feature was implemented in /arch/x86/mm/cpu_entry_area.c, which works through the init_cea_offsets() function when KASLR is enabled. However, despite this feature, there is still a risk of per-cpu entry area leaks. This issue could allow a local user to gain access to some important data with memory in an expected location and potentially escalate their privileges on the system.

CVSS Base Scores

version 3.1