PT-2021-21136 · Acrn · Acrn

Published 2021-07-02 · Updated 2021-07-08 · CVE-2021-36146

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: ACRN versions prior to 2.5

Description: The issue is related to a NULL Pointer Dereference for a trb pointer in the devicemodel/hw/pci/xhci.c file. This indicates a problem where the software attempts to access or manipulate a null (non-existent) pointer, which can lead to crashes or potentially allow an attacker to execute arbitrary code.

Recommendations: For versions prior to 2.5, update to version 2.5 or later to resolve the issue. As a temporary workaround, consider restricting access to the devicemodel/hw/pci/xhci.c module to minimize the risk of exploitation.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2021-36146

Affected Products

Acrn

References · 6

• https://github.com/projectacrn/acrn-hypervisor/pull/6173/commits/330359921e2e4c2f3f3a10b5bab86942d63c4428 · Patch
• https://osv.dev/vulnerability/CVE-2021-36146 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-36146 · Security Note
• https://t.me/cibsecurity/25908 · Telegram Post
• https://t.me/cvenotify/17028 · Telegram Post
• https://t.me/cvenotify/17035 · Telegram Post