VULNERABILITY INTELLIGENCE

CVE-2021-47668

CVSS score7.8 HIGH
EPSS probability0.24%
CISA KEVNot currently listed
Published2025-04-17
Last modified2026-08-04
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • CWE-416: Use After Free

Primary references