Out-of-Bounds Read in Linux Kernel NTFS3 Driver

Executive Summary

This vulnerability is an out-of-bounds read issue in the Linux kernel's NTFS3 file system driver. The function decompress_lznt does not properly validate array index bounds before accessing the decompression table. This can be triggered by a corrupted NTFS3 image containing invalid compressed data, leading to memory access outside the intended range.

Useful 0 Not Useful 0

Detection Guidance

This vulnerability involves a kernel-level issue in the NTFS3 filesystem driver. Detection requires checking the kernel version and verifying if the affected code path is present. Use uname -a to check your kernel version and grep for NTFS3 support in loaded modules. No direct commands detect exploitation but monitoring for crashes or filesystem errors may indicate issues.

Useful 0 Not Useful 0

Impact Analysis

This vulnerability could allow an attacker to read sensitive memory data or cause system instability by triggering an out-of-bounds read. If exploited, it might lead to information disclosure or denial-of-service conditions on affected systems running the vulnerable Linux kernel.

Useful 0 Not Useful 0

Compliance Impact

This vulnerability does not directly affect compliance with standards like GDPR or HIPAA as it is a low-level kernel issue involving out-of-bounds reads in NTFS3 decompression. No evidence suggests it impacts data confidentiality, integrity, or availability in a way that would violate these regulations.

Useful 0 Not Useful 0

Mitigation Strategies

Update your Linux kernel to the latest stable version that includes the fix for this NTFS3 vulnerability. If immediate patching is not possible, avoid mounting untrusted NTFS3 images or disable the NTFS3 module temporarily. Monitor system logs for filesystem errors or crashes as potential indicators of exploitation.

Useful 0 Not Useful 0