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CVE-2021-47670

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CVE-2021-47670

Published: Apr 17, 2025

Modified: May 11, 2026

PUBLISHED

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.

VendorProductVersions

Linux

Linux

affected
0a25e1f4f18566b750ebd3ae995af64e23111e63 - < 5408824636fa0dfedb9ecb0d94abd573131bfbbe
affected
0a25e1f4f18566b750ebd3ae995af64e23111e63 - < ddd1416f44130377798c1430b76503513b7497c2
affected
0a25e1f4f18566b750ebd3ae995af64e23111e63 - < ec939c13c3fff2114479769c8380b7f1a54feca9
affected
0a25e1f4f18566b750ebd3ae995af64e23111e63 - < 50aca891d7a554db0901b245167cd653d73aaa71

Linux

Linux

affected
4.0
unaffected
0 - < 4.0
unaffected
4.19.171 - <= 4.19.*
unaffected
5.4.93 - <= 5.4.*
unaffected
5.10.11 - <= 5.10.*

+1 more versions

References

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