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Review reviewHigh

CVE-2024-38388

Linux Linux, linux kernel

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 ca...

CVSS
7.8
EPSS
0.23%
14.2% percentile
CISA KEV
Not listed
Published
2024.06.21
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.23%
Technical severityCVSS 7.8

Vulnerability overview

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 ca...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 3233b978af23f11b4ad4f7f11a9a64bd05702b1f < 191dc1b2ff0fb35e7aff15a53224837637df8bff, >= 3233b978af23f11b4ad4f7f11a9a64bd05702b1f < 6e359be4975006ff72818e79dad8fe48293f2eb2, >= 3233b978af23f11b4ad4f7f11a9a64bd05702b1f < 3291486af5636540980ea55bae985f3eaa5b0740, >= 3233b978af23f11b4ad4f7f11a9a64bd05702b1f < 172811e3a557d8681a5e2d0f871dc04a2d17eb13, >= 6.0, >= 6.0 < 6.1.93, >= 6.2 < 6.6.33, >= 6.7 < 6.9.4
Fixed versions
6.1.93, 6.6.33, 6.9.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-401
CVE-2024-38388 — Linux Linux, linux kernel | SECUFOCUS NOW