CVE-2024-38388: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/cs_dsp_ctl: Use private_free for control cleanup Use the control private_free callback to free the associated data block. This ensures that the memory won't leak, whatever way the control gets destroyed. The original implementation didn't actually remove the ALSA controls in hda_cs_dsp_control_remove(). It only freed the internal tracking structure. This meant it was possible to remove/unload the amp driver while leaving its ALSA controls still present in the soundcard. Obviously attempting to access them could cause segfaults or at least dereferencing stale pointers.

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CVSS v3.1 Score

3.3

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.0 — 6.1.93
linux	linux_kernel	6.2 — 6.6.33
linux	linux_kernel	6.7 — 6.9.4

References

Advisories & Patches

https://git.kernel.org/stable/c/172811e3a557d8681a5e2d0f871dc04a2d17eb13 https://git.kernel.org/stable/c/191dc1b2ff0fb35e7aff15a53224837637df8bff https://git.kernel.org/stable/c/3291486af5636540980ea55bae985f3eaa5b0740 https://git.kernel.org/stable/c/6e359be4975006ff72818e79dad8fe48293f2eb2 https://git.kernel.org/stable/c/172811e3a557d8681a5e2d0f871dc04a2d17eb13 https://git.kernel.org/stable/c/191dc1b2ff0fb35e7aff15a53224837637df8bff https://git.kernel.org/stable/c/3291486af5636540980ea55bae985f3eaa5b0740 https://git.kernel.org/stable/c/6e359be4975006ff72818e79dad8fe48293f2eb2

Frequently Asked Questions

What is CVE-2024-38388? +

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/cs_dsp_ctl: Use private_free for control cleanup Use the control private_free callback to free the associated data block. This ensures that the memory won't leak, whatever way the control gets destroyed. The original implementation didn't actually remove the ALSA controls in hda_cs_dsp_control_remove(). It only freed the internal tracking structure. This meant it was possible to remove/unload the amp driver while leaving its ALSA controls still present in the soundcard. Obviously attempting to access them could cause segfaults or at least dereferencing stale pointers. It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2024-38388? +

CVE-2024-38388 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2024-38388? +

CVE-2024-38388 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-38388? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-38388