CVE-2021-47670

April 17, 2025, 8:21 p.m.

7.8
High

Description

In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the peak_usb_netif_rx_ni(). Reordering the lines solves the issue.

Product(s) Impacted

Vendor Product Versions
Linux
  • Kernel
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-416
Use After Free
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a linux kernel / / / / / / / /

References

https://git.kernel.org/stable/c/50aca891d7a554db0901b245167cd653d73aaa71
https://git.kernel.org/stable/c/5408824636fa0dfedb9ecb0d94abd573131bfbbe
https://git.kernel.org/stable/c/ddd1416f44130377798c1430b76503513b7497c2
https://git.kernel.org/stable/c/ec939c13c3fff2114479769c8380b7f1a54feca9

Tags

416baaa9-dc9f-4396-8d5f-8c081fb06d67
CWE-416
2025-04-17
CVE-2021-47670

CVSS Score

7.8 / 10

CVSS Data - 3.1

  • Attack Vector: LOCAL
  • Attack Complexity: LOW
  • Privileges Required: LOW
  • Scope: UNCHANGED
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH

    • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

    View Vector String

Timeline

Published: April 17, 2025, 6:15 p.m.
Last Modified: April 17, 2025, 8:21 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.