CVE-2025-21808

MEDIUM EPSS 7.3%
Published Feb 27, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 27, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
7.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥6.3  –  <6.6.76
linuxlinux_kernel*≥6.7  –  <6.12.13
linuxlinux_kernel*≥6.13  –  <6.13.2

References 4

  • git.kernel.org https://git.kernel.org/stable/c/3595599fa8360bb3c7afa7ee50c810b4a64106ea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/557707906dd3e34b8a8c265f664d19f95799937e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b1bc4a35a04cbeb85b6ef5911ec015baa424989f
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3595599fa8360bb3c7afa7ee50c810b4a64106ea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/557707906dd3e34b8a8c265f664d19f95799937e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b1bc4a35a04cbeb85b6ef5911ec015baa424989f
    Patch