CVE-2024-46863: Addressing Vulnerability in Linux Kernel ASoC Intel soc-acpi-intel-lnl-match

Understanding CVE-2024-46863 in the Linux Kernel

On September 27, 2024, a new vulnerability, identified as CVE-2024-46863, was published. This vulnerability affects the Linux kernel, specifically within the ASoC Intel soc-acpi-intel-lnl-match component. An issue was identified in the handling of struct snd_soc_acpi_mach {}, where an empty item was required but missing in struct snd_soc_acpi_link_adr array.

This vulnerability impacts multiple versions of the Linux kernel, with the affected versions being documented as:

• Versions between dd3bd9dc4708 and 8eb57389d8ad
• Versions between dd3bd9dc4708 and c4246f1fe9f2
• Version 6.10

Notably, versions before 6.10 and specific commits after 6.10 remain unaffected.

Mitigation Steps for CVE-2024-46863

To mitigate the impact of CVE-2024-46863, it is crucial to follow the steps outlined below:

• Update to an unaffected version: The simplest and most definitive mitigation is updating the Linux kernel to a version that is not affected. Based on the details provided, versions below 6.10 or specific commits above 6.10, like 6.11, are unaffected. Users should upgrade to these versions to ensure the vulnerability is patched.
• Review specific patch commits: The Linux community has provided specific patches that address this issue. Notable patch references include commits 8eb57389d8ad and c4246f1fe9f2. These patches introduce the missing empty item in the required struct, thus resolving the issue.
• Regular vulnerability assessments: Organizations should maintain a routine of regular vulnerability assessments and subscribe to security advisories. This practice ensures that any emerging threats or newly discovered vulnerabilities are promptly addressed.

Implementing these steps will significantly reduce the risk associated with CVE-2024-46863.

Conclusion

Staying ahead in the cybersecurity landscape requires vigilance and timely response to vulnerabilities. With CVE-2024-46863, updating to the unaffected versions or applying the provided patches are crucial steps to ensure system integrity and security. Regular assessments and proactive monitoring of security advisories will further enhance an organization's defense mechanism against potential threats.

For more details on the patches, refer to the Linux kernel repository at Linux Kernel Git Repository.