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CVE-2021-47669

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CVE-2021-47669

Published: Apr 17, 2025

Modified: May 11, 2026

PUBLISHED

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().

VendorProductVersions

Linux

Linux

affected
a8f820a380a2a06fc4fe1a54159067958f800929 - < 6d6dcf2399cdd26f7f5426ca8dd8366b7f2ca105
affected
a8f820a380a2a06fc4fe1a54159067958f800929 - < 9b820875a32a3443d67bfd368e93038354e98052
affected
a8f820a380a2a06fc4fe1a54159067958f800929 - < a24476b37167816e6352ca1a2cf3769847774f70
affected
a8f820a380a2a06fc4fe1a54159067958f800929 - < e771a874076115df8bff27d325edfd2340e4ec69
affected
a8f820a380a2a06fc4fe1a54159067958f800929 - < 75854cad5d80976f6ea0f0431f8cedd3bcc475cb

Linux

Linux

affected
4.12
unaffected
0 - < 4.12
unaffected
4.14.218 - <= 4.14.*
unaffected
4.19.171 - <= 4.19.*
unaffected
5.4.93 - <= 5.4.*

+2 more versions

References

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