CVEvulnerability

CVE-2021-47520

7.8 HIGH Published 2024-05-24 Modified 2026-08-04 Official page ↗
Status
Modified
Published
2024-05-24
Last modified
2026-08-04
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
8.8 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-416

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.

Affected configurations

• linux linux kernel (>= 2.6.37 < 4.4.295) • linux linux kernel (>= 4.5 < 4.9.293) • linux linux kernel (>= 4.10 < 4.14.258) • linux linux kernel (>= 4.15 < 4.19.221) • linux linux kernel (>= 4.20 < 5.4.165) • linux linux kernel (>= 5.5 < 5.10.85) • linux linux kernel (>= 5.11 < 5.15.8)

Related

Weakness · CWE (1)

References