CVE-2024-57906
Published: 19 January 2025
Summary
CVE-2024-57906 is a high-severity Use of Uninitialized Resource (CWE-908) vulnerability in Linux Linux Kernel. Its CVSS base score is 7.1 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Data from Local System (T1005); ranked at the 4.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-2 (Flaw Remediation) and SI-15 (Information Output Filtering).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Timely flaw remediation through kernel patching directly fixes the uninitialized buffer array in the ti-ads8688 driver, preventing kernel memory disclosure to userspace.
Memory protection mechanisms restrict unauthorized access to kernel memory, mitigating leaks through vulnerable driver buffers.
Information output filtering sanitizes data from the IIO triggered buffer before exposure to userspace, blocking uninitialized kernel contents.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Local kernel memory disclosure via uninitialized buffer directly enables reading sensitive data from the local system (T1005) and can reveal system/hardware details (T1082).
NVD Description
In the Linux kernel, the following vulnerability has been resolved: iio: adc: ti-ads8688: fix information leak in triggered buffer The 'buffer' local array is used to push data to user space from a triggered buffer, but it does not set…
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values for inactive channels, as it only uses iio_for_each_active_channel() to assign new values. Initialize the array to zero before using it to avoid pushing uninitialized information to userspace.
Deeper analysisAI
CVE-2024-57906 is an information disclosure vulnerability in the Linux kernel's Industrial I/O (IIO) subsystem, specifically the ti-ads8688 analog-to-digital converter (ADC) driver. The issue arises in the triggered buffer handling, where a local 'buffer' array used to push data to userspace is not fully initialized. While the driver assigns values only to active channels via iio_for_each_active_channel(), inactive channels retain uninitialized memory contents, which are then exposed to userspace. This flaw, classified under CWE-908 (Use of Uninitialized Resource), carries a CVSS v3.1 base score of 7.1 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H).
A local attacker with low privileges (PR:L) can exploit this vulnerability with low complexity and no user interaction required. By triggering buffer reads on the affected driver, the attacker can obtain sensitive uninitialized kernel memory leaked through inactive channels, achieving high confidentiality impact. The high availability impact likely stems from potential kernel instability or denial-of-service effects during exploitation attempts.
Mitigation involves applying upstream kernel patches, as detailed in the referenced stable commit fixes: 1c80a0985a9a, 2a7377ccfd94, 3bf8d1e87939, 455df95eb8b2, and 485570ed82b7. These commits initialize the buffer array to zero before use, preventing the leak of uninitialized data to userspace. Security practitioners should update affected Linux kernels promptly, particularly those using the ti-ads8688 driver in embedded or industrial environments.
Details
- CWE(s)