Linux Kernel Vulnerability in Device-Bound Programs for Generic Mode
CVE-2025-21808
What is CVE-2025-21808?
A vulnerability in the Linux kernel allows device-bound programs to be improperly attached in generic XDP mode, which can lead to system crashes. These programs are intended to utilize RX metadata kfuncs specific to drivers, but without appropriate checks in place, they can be invoked in a generic context, resulting in invalid behavior and potential instability. This issue has been addressed by introducing restrictions that prevent such attachments in generic mode, thereby enhancing system reliability.

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Affected Version(s)
Linux 2b3486bc2d237ec345b3942b7be5deabf8c8fed1
Linux 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 < 557707906dd3e34b8a8c265f664d19f95799937e
Linux 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 < 5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1