CVE-2024-42225
Linux Kernel vulnerability analysis and mitigation

Overview

CVE-2024-42225 is a vulnerability discovered in the Linux kernel's MediaTek WiFi (mt76) driver. The issue was identified and resolved by replacing skb_put with skb_put_zero to prevent the potential reuse of uninitialized data. The vulnerability affects Linux kernel versions up to 5.15.163, versions from 5.16 up to 6.1.98, versions from 6.2 up to 6.6.39, and versions from 6.7 up to 6.9.9 (NVD).

Technical details

The vulnerability is related to memory handling in the MediaTek WiFi driver's network buffer management. The issue stems from the use of skb_put instead of skb_put_zero, which could potentially expose uninitialized memory data. The vulnerability has been assigned a CVSS v3.1 base score of 7.5 (HIGH) with the vector string CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating that it requires adjacent network access and high attack complexity, but no privileges or user interaction (NVD).

Impact

The vulnerability could potentially lead to information disclosure through the exposure of uninitialized memory data in network packets. This could potentially expose sensitive information from the kernel memory space (NVD).

Exploitability

The vulnerability requires adjacent network access and has high attack complexity. The CVSS scoring indicates that while the vulnerability is significant, it requires specific conditions to be exploited (NVD).

Mitigation and workarounds

The vulnerability has been patched in the Linux kernel by replacing skb_put with skb_put_zero in the affected code. Various Linux distributions have released updates to address this vulnerability, including Ubuntu which has fixed it in versions 6.8.0-48.48 for 24.04 LTS and 5.15.0-121.131 for 22.04 LTS (Ubuntu).

Additional resources


SourceThis report was generated using AI

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