CVE-2026-72261

Received Received - Intake

Buffer Overflow in Linux Kernel ASoC SOF

Publication date: 2026-08-15

Last updated on: 2026-08-17

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: ipc3-control: Validate size in snd_sof_update_control In snd_sof_update_control(), firmware-provided cdata->num_elems is checked against local_cdata->data->size but never against the actual allocation size. If local_cdata->data->size was previously set to an inconsistent value, the memcpy could write past the allocated buffer. Add a bounds check to ensure num_elems fits within the available space in the ipc_control_data allocation before copying.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-15

Last Modified

2026-08-17

Generated

2026-09-04

AI Q&A

2026-08-15

EPSS Evaluated

2026-09-03

NVD

CVE-2026-72261

EUVD

EUVD-2026-59160

Affected Vendors & Products

Vendor	Product	Version / Range
linux	kernel	*
linux	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is in the Linux kernel's ASoC (ALSA System on Chip) Sound Open Firmware (SOF) component. It involves a bounds check issue in the snd_sof_update_control function where firmware-provided data size is not properly validated against the allocated buffer size. This could allow a memcpy operation to write beyond the intended memory area if prior size inconsistencies exist.

Detection Guidance

This vulnerability is specific to the Linux kernel's ASoC SOF subsystem and requires kernel-level inspection. Detection involves checking kernel logs for buffer overflow warnings or crashes related to snd_sof_update_control. Commands like dmesg | grep sof or journalctl -k | grep sof may help identify issues. However, no direct detection commands are provided in the context.

Impact Analysis

This vulnerability could lead to memory corruption, crashes, or potential arbitrary code execution in the Linux kernel. If exploited, it may allow an attacker to gain elevated privileges or cause system instability. Systems using affected kernel versions with ASoC SOF components are at risk.

Compliance Impact

This vulnerability could potentially lead to buffer overflows in the Linux kernel's ASoC subsystem, which might allow unauthorized memory access or code execution. Such issues could compromise data integrity or confidentiality, indirectly affecting compliance with standards like GDPR or HIPAA by increasing risks of data breaches or unauthorized data exposure.

Mitigation Strategies

Apply the latest Linux kernel security patches that address this issue. If using a distribution kernel, update via your package manager (e.g., apt upgrade linux-image or yum update kernel). For custom kernels, recompile with the patched snd_sof_update_control function. Monitor kernel.org or your distro's security advisories for updates.

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