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CVE-2021-47670 – Linux Kernel Can: Use After Free Vulnerability

The following table lists the changes that have been made to the
CVE-2021-47670 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • CVE Modified
    by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Apr. 17, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-416
  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Apr. 17, 2025

    Action Type Old Value New Value
    Added 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.
    Added Reference https://git.kernel.org/stable/c/50aca891d7a554db0901b245167cd653d73aaa71
    Added Reference https://git.kernel.org/stable/c/5408824636fa0dfedb9ecb0d94abd573131bfbbe
    Added Reference https://git.kernel.org/stable/c/ddd1416f44130377798c1430b76503513b7497c2
    Added Reference https://git.kernel.org/stable/c/ec939c13c3fff2114479769c8380b7f1a54feca9
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