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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities
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CVE-2021-47520 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: can: pch_can: pch_can_rx_normal: fix use after free After calling netif_receive_skb(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is dereferenced just after the call netif_receive_skb(skb). Reordering the lines solves the issue.


Severity

 


CVSS 4.0 Severity and Metrics:

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


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/3a3c46e2eff0577454860a203be1a8295f4acb76 Patch 
https://git.kernel.org/stable/c/3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa Patch 
https://git.kernel.org/stable/c/6c73fc931658d8cbc8a1714b326cb31eb71d16a7 Patch 
https://git.kernel.org/stable/c/703dde112021c93d6e89443c070e7dbd4dea612e Patch 
https://git.kernel.org/stable/c/94cddf1e9227a171b27292509d59691819c458db Patch 
https://git.kernel.org/stable/c/abb4eff3dcd2e583060082a18a8dbf31f02689d4 Patch 
https://git.kernel.org/stable/c/affbad02bf80380a7403885b9fe4a1587d1bb4f3 Patch 
https://git.kernel.org/stable/c/bafe343a885c70dddf358379cf0b2a1c07355d8d Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47520
NVD Published Date:
05/24/2024
NVD Last Modified:
06/10/2024
Source:
kernel.org