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Vulnerabilities CVE-2021-47668

CVE-2021-47668

High
Open
TLP:CLEAR

can: dev: can_restart: fix use after free bug

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Description

In the Linux kernel, the following vulnerability has been resolved: can: dev: can_restart: fix use after free bug After calling netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the netif_rx_ni() in: stats->rx_bytes += cf->len; Reordering the lines solves the issue.

Details

CVSS Score
8.8
EPSS Score
0.25%

16.8th percentile

CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Apr 17, 2025
Last Modified
Aug 5, 2026
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