CVE-2021-47669

can: vxcan: vxcan_xmit: fix use after free bug

High · published April 17, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
8.3
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

can: vxcan: vxcan_xmit: fix use after free bug

After calling netif_rx_ni(skb), dereferencing skb is unsafe.

Especially, the canfd_frame cfd which aliases skb memory is accessed

after the netif_rx_ni().

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00191 · 8.3th percentile
Published
2025-04-17T18:01Z
EPSS history
Timeline
  • 17 APR 18:01Z
    can: vxcan: vxcan_xmit: fix use after free bug
    cvelistv5