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Status published
Unknown
CVE-2021-47669
can: vxcan: vxcan_xmit: fix use after free bug
Vulnerability 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().
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://git.kernel.org/stable/c/6d6dcf2399cdd26f7f5426ca8dd8366b7f2ca105
- https://git.kernel.org/stable/c/9b820875a32a3443d67bfd368e93038354e98052
- https://git.kernel.org/stable/c/a24476b37167816e6352ca1a2cf3769847774f70
- https://git.kernel.org/stable/c/e771a874076115df8bff27d325edfd2340e4ec69
- https://git.kernel.org/stable/c/75854cad5d80976f6ea0f0431f8cedd3bcc475cb
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Affected Vendor
Linux
View all reports →Affected Software
Linux
Vulnerable Versions:
a8f820a380a2a06fc4fe1a54159067958f800929, 4.12, 0, 4.14.218, 4.19.171, 5.4.93, 5.10.11, 5.11
Timeline
Official Publish:
April 17th, 2025
Last Modified:
May 11th, 2026
Added to House:
July 21st, 2026
CVSS Vectors
No vector data available
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.