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Vulnerability Change Records for CVE-2025-21808

Change History

New CVE Received from kernel.org 2/27/2025 3:16:03 PM

Action Type Old Value New Value
Added Description

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

net: xdp: Disallow attaching device-bound programs in generic mode

Device-bound programs are used to support RX metadata kfuncs. These
kfuncs are driver-specific and rely on the driver context to read the
metadata. This means they can't work in generic XDP mode. However, there
is no check to disallow such programs from being attached in generic
mode, in which case the metadata kfuncs will be called in an invalid
context, leading to crashes.

Fix this by adding a check to disallow attaching device-bound programs
in generic mode.
Added Reference

								
							
							
						
https://git.kernel.org/stable/c/3595599fa8360bb3c7afa7ee50c810b4a64106ea
Added Reference

								
							
							
						
https://git.kernel.org/stable/c/557707906dd3e34b8a8c265f664d19f95799937e
Added Reference

								
							
							
						
https://git.kernel.org/stable/c/5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1
Added Reference

								
							
							
						
https://git.kernel.org/stable/c/b1bc4a35a04cbeb85b6ef5911ec015baa424989f