CVE-2025-21808

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.

The following products are affected by CVE-2025-21808 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-21808.

URL	Resource
https://git.kernel.org/stable/c/3595599fa8360bb3c7afa7ee50c810b4a64106ea
https://git.kernel.org/stable/c/557707906dd3e34b8a8c265f664d19f95799937e
https://git.kernel.org/stable/c/5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1
https://git.kernel.org/stable/c/b1bc4a35a04cbeb85b6ef5911ec015baa424989f
https://lore.kernel.org/linux-cve-announce/2025022753-CVE-2025-21808-b8bf@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-21808
https://www.cve.org/CVERecord?id=CVE-2025-21808