CVE-2024-41014
Linux Kernel vulnerability analysis and mitigation

Overview

CVE-2024-41014 affects the Linux kernel's XFS filesystem implementation. The vulnerability was discovered in the xlogrecoverprocessdata function, where there is a lack of verification of the space occupied by fixed members of xlogop_header. The issue was disclosed on July 29, 2024, and affects Linux kernel versions from 6.2 up to (but not including) 6.6.64, versions before 6.1.120, and versions from 6.7 up to (but not including) 6.11 (NVD).

Technical details

The vulnerability stems from insufficient bounds checking in the xlogrecoverprocessdata function within the XFS filesystem code. The issue occurs during log recovery operations where the code fails to properly verify the space occupied by fixed members of xlogop_header. The vulnerability has been assigned a CVSS v3.1 base score of 7.1 (High) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H, indicating local access requirements but high potential impact on confidentiality and availability (NVD).

Impact

The vulnerability can be exploited to trigger an out-of-bounds read in the XFS filesystem code. This could potentially lead to information disclosure and system crashes, affecting both confidentiality and availability of the system. The attack requires local access and can be executed through a specially crafted XFS image (NVD).

Mitigation and workarounds

The vulnerability has been fixed by adding bounds checking to ensure sufficient space exists to access fixed members of xlogopheader. The fix has been implemented through a patch that adds a check to verify if the data pointer exceeds the end boundary, returning an EFSCORRUPTED error if an overrun is detected (Kernel Patch). Users should update to patched kernel versions when available.

Additional resources


SourceThis report was generated using AI

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