Riskcovery

CVE-2025-21808

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

State
Published
Severity
7.8 High
Published
Feb 27, 2025
Updated
Oct 15, 2026
Reserved
Dec 29, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 to before b1bc4a35a04cbeb85b6ef5911ec015baa424989fAffected
  • 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 to before 557707906dd3e34b8a8c265f664d19f95799937eAffected
  • 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 to before 5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1Affected
  • 2b3486bc2d237ec345b3942b7be5deabf8c8fed1 to before 3595599fa8360bb3c7afa7ee50c810b4a64106eaAffected
LinuxLinux
  • 6.3Affected
  • before 6.3Not affected
  • 6.6.76 through 6.6.*Not affected
  • 6.12.13 through 6.12.*Not affected
  • 6.13.2 through 6.13.*Not affected
  • 6.14 and laterNot affected

References

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