CVE-2024-38388
CVE-2024-38388 is a low-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-401.
Key facts
- Severity: Low (CVSS 3.x base score 3.3)
- EPSS exploit prediction: 0% (12th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-37295
- Weakness: CWE-401
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
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.
- How severe is CVE-2024-38388?
- CVE-2024-38388 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2024-38388 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-38388?
- CVE-2024-38388 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-38388?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2024-38388 have an EU (EUVD) identifier?
- Yes. CVE-2024-38388 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-37295.
- When was CVE-2024-38388 published?
- CVE-2024-38388 was published on 2024-06-21 and last updated on 2026-06-17.
References
- 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
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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