CVE-2021-47670

In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix use after free bugs After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the peak_usb_netif_rx_ni(). 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/50aca891d7a554db0901b245167cd653d73aaa71	Patch
https://git.kernel.org/stable/c/5408824636fa0dfedb9ecb0d94abd573131bfbbe	Patch
https://git.kernel.org/stable/c/ddd1416f44130377798c1430b76503513b7497c2	Patch
https://git.kernel.org/stable/c/ec939c13c3fff2114479769c8380b7f1a54feca9	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:5.11:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.11:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.11:rc3::::::
	cpe:2.3:o:linux:linux_kernel:5.11:rc4::::::

History

No history.

Information

Published : 2025-04-17 18:15

Updated : 2025-04-21 18:41

NVD link : CVE-2021-47670

Mitre link : CVE-2021-47670

CVE.ORG link : CVE-2021-47670

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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