CVE-2021-47520

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3a3c46e2eff0577454860a203be1a8295f4acb76	Patch
https://git.kernel.org/stable/c/3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa	Patch
https://git.kernel.org/stable/c/6c73fc931658d8cbc8a1714b326cb31eb71d16a7	Patch
https://git.kernel.org/stable/c/703dde112021c93d6e89443c070e7dbd4dea612e	Patch
https://git.kernel.org/stable/c/94cddf1e9227a171b27292509d59691819c458db	Patch
https://git.kernel.org/stable/c/abb4eff3dcd2e583060082a18a8dbf31f02689d4	Patch
https://git.kernel.org/stable/c/affbad02bf80380a7403885b9fe4a1587d1bb4f3	Patch
https://git.kernel.org/stable/c/bafe343a885c70dddf358379cf0b2a1c07355d8d	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-05-24 15:15

Updated : 2024-06-10 18:42

NVD link : CVE-2021-47520

Mitre link : CVE-2021-47520

CVE.ORG link : CVE-2021-47520

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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