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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2022-49030 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: libbpf: Handle size overflow for ringbuf mmap The maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries will overflow u32 when mapping producer page and data pages. Only casting max_entries to size_t is not enough, because for 32-bits application on 64-bits kernel the size of read-only mmap region also could overflow size_t. So fixing it by casting the size of read-only mmap region into a __u64 and checking whether or not there will be overflow during mmap.


Metrics

 
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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/0140e079a42064680394fff1199a7b5483688dec Patch 
https://git.kernel.org/stable/c/535a25ab4f9a45f74ba38ab71de95e97474922ed Patch 
https://git.kernel.org/stable/c/8a549ab6724520aa3c07f47e0eba820293551490 Patch 
https://git.kernel.org/stable/c/927cbb478adf917e0a142b94baa37f06279cc466 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-190 Integer Overflow or Wraparound cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-49030
NVD Published Date:
10/21/2024
NVD Last Modified:
10/24/2024
Source:
kernel.org