CVE-2021-47669

HIGH

Linux Kernel 4.12-4.14.218 - Use-After-Free in vxcan_xmit

Title source: llm
STIX 2.1

Description

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().

References (5)

Core 5

Scores

CVSS v3 7.8
EPSS 0.0016
EPSS Percentile 5.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-416
Status published
Products (14)
Linux/Linux < 4.12
Linux/Linux 4.12
Linux/Linux 4.14.218 - 4.14.*
Linux/Linux 4.19.171 - 4.19.*
Linux/Linux 5.10.11 - 5.10.*
Linux/Linux 5.11
Linux/Linux 5.4.93 - 5.4.*
Linux/Linux a8f820a380a2a06fc4fe1a54159067958f800929 - 6d6dcf2399cdd26f7f5426ca8dd8366b7f2ca105
Linux/Linux a8f820a380a2a06fc4fe1a54159067958f800929 - 75854cad5d80976f6ea0f0431f8cedd3bcc475cb
Linux/Linux a8f820a380a2a06fc4fe1a54159067958f800929 - 9b820875a32a3443d67bfd368e93038354e98052
... and 4 more
Published Apr 17, 2025
Tracked Since Feb 18, 2026