CVE-2025-21743

usbnet: ipheth: fix possible overflow in DPE length check

Description

In the Linux kernel, the following vulnerability has been resolved: usbnet: ipheth: fix possible overflow in DPE length check Originally, it was possible for the DPE length check to overflow if wDatagramIndex + wDatagramLength > U16_MAX. This could lead to an OoB read. Move the wDatagramIndex term to the other side of the inequality. An existing condition ensures that wDatagramIndex < urb->actual_length.

Category

7.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.02%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/18bf6f5cce3172cb303c3f0551aa9443d5ed74f8 patch
https://git.kernel.org/stable/c/d677e7dd59ad6837496f5a02d8e5d39824278dfd patch
https://git.kernel.org/stable/c/d824a964185910e317287f034c0a439c08b4fe49 patch
https://git.kernel.org/stable/c/c219427ed296f94bb4b91d08626776dc7719ee27 patch

Frequently Asked Questions

What is the severity of CVE-2025-21743?
CVE-2025-21743 has been scored as a high severity vulnerability.
How to fix CVE-2025-21743?
To fix CVE-2025-21743, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-21743 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-21743 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-21743?
CVE-2025-21743 affects Linux Linux, Linux Linux.
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