VULNERABILITY INTELLIGENCE

CVE-2021-47520

CVSS score8.8 HIGH
EPSS probability0.34%
CISA KEVNot currently listed
Published2024-05-24
Last modified2026-08-04
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: can: pch_can: pch_can_rx_normal: fix use after free After calling netif_receive_skb(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is dereferenced just after the call netif_receive_skb(skb). Reordering the lines solves the issue.

Weakness classification

  • nvd@nist.gov: CWE-416

Primary references