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Vulnerability Change Records for CVE-2025-21742

Change History

New CVE Received from kernel.org 2/26/2025 10:15:14 PM

Action Type Old Value New Value
Added Description

								
							
							
						
In the Linux kernel, the following vulnerability has been resolved:

usbnet: ipheth: use static NDP16 location in URB

Original code allowed for the start of NDP16 to be anywhere within the
URB based on the `wNdpIndex` value in NTH16. Only the start position of
NDP16 was checked, so it was possible for even the fixed-length part
of NDP16 to extend past the end of URB, leading to an out-of-bounds
read.

On iOS devices, the NDP16 header always directly follows NTH16. Rely on
and check for this specific format.

This, along with NCM-specific minimal URB length check that already
exists, will ensure that the fixed-length part of NDP16 plus a set
amount of DPEs fit within the URB.

Note that this commit alone does not fully address the OoB read.
The limit on the amount of DPEs needs to be enforced separately.
Added Reference

								
							
							
						
https://git.kernel.org/stable/c/2b619445dcb6dab97d8ed033fb57225aca1288c4
Added Reference

								
							
							
						
https://git.kernel.org/stable/c/86586dcb75cb8fd062a518aca8ee667938b91efb
Added Reference

								
							
							
						
https://git.kernel.org/stable/c/8fb062178e1ce180e2cfdc9abc83a1b9fea381ca
Added Reference

								
							
							
						
https://git.kernel.org/stable/c/cf1ac7f7cf601ac31d1580559c002b5e37b733b7