CVE-2025-21808
net: xdp: Disallow attaching device-bound programs in generic mode
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 27, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
2b3486bc2d237ec345b3942b7be5deabf8c8fed1 < b1bc4a35a04cbeb85b6ef5911ec015baa424989f 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 < 557707906dd3e34b8a8c265f664d19f95799937e 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 < 5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 < 3595599fa8360bb3c7afa7ee50c810b4a64106ea
Linux / Linux
6.3
References
git.kernel.org: https://git.kernel.org/stable/c/b1bc4a35a04cbeb85b6ef5911ec015baa424989f git.kernel.org: https://git.kernel.org/stable/c/557707906dd3e34b8a8c265f664d19f95799937e git.kernel.org: https://git.kernel.org/stable/c/5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1 git.kernel.org: https://git.kernel.org/stable/c/3595599fa8360bb3c7afa7ee50c810b4a64106ea