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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-47604 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: vduse: check that offset is within bounds in get_config() This condition checks "len" but it does not check "offset" and that could result in an out of bounds read if "offset > dev->config_size". The problem is that since both variables are unsigned the "dev->config_size - offset" subtraction would result in a very high unsigned value. I think these checks might not be necessary because "len" and "offset" are supposed to already have been validated using the vhost_vdpa_config_validate() function. But I do not know the code perfectly, and I like to be safe.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/dc1db0060c02d119fd4196924eff2d1129e9a442 Patch 
https://git.kernel.org/stable/c/dc1db0060c02d119fd4196924eff2d1129e9a442 Patch 
https://git.kernel.org/stable/c/ebbbc5fea3f648175df1aa3f127c78eb0252cc2a Patch 
https://git.kernel.org/stable/c/ebbbc5fea3f648175df1aa3f127c78eb0252cc2a Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47604
NVD Published Date:
06/19/2024
NVD Last Modified:
11/21/2024
Source:
kernel.org