CVE-2025-21808

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

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.

N/A
CVSS
Severity:
EPSS 0.03%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2025-21808?
CVE-2025-21808 has not yet been assigned a CVSS score.
How to fix CVE-2025-21808?
To fix CVE-2025-21808, 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-2025-21808 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-21808 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-2025-21808?
CVE-2025-21808 affects Linux Linux, Linux Linux.
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