CVE-2025-38706: debian linux Null Dereference — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: core: Check for rtd == NULL in snd_soc_remove_pcm_runtime() snd_soc_remove_pcm_runtime() might be called with rtd == NULL which will leads to null pointer dereference. This was reproduced with topology loading and marking a link as ignore due to missing hardware component on the system. On module removal the soc_tplg_remove_link() would call snd_soc_remove_pcm_runtime() with rtd == NULL since the link was ignored, no runtime was created.

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CVSS v3.1 Score

5.5

MEDIUM

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

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.6 — 5.10.241
linux	linux_kernel	5.11 — 5.15.190
linux	linux_kernel	5.16 — 6.1.149
linux	linux_kernel	6.2 — 6.6.103
linux	linux_kernel	6.7 — 6.12.43
linux	linux_kernel	6.13 — 6.15.11
linux	linux_kernel	6.16 — 6.16.2
debian	debian_linux	All

References

Advisories & Patches

https://git.kernel.org/stable/c/2d91cb261cac6d885954b8f5da28b5c176c18131 https://git.kernel.org/stable/c/2fce20decc6a83f16dd73744150c4e7ea6c97c21 https://git.kernel.org/stable/c/41f53afe53a57a7c50323f99424b598190acf192 https://git.kernel.org/stable/c/7ce0a7255ce97ed7c54afae83fdbce712a1f0c9e https://git.kernel.org/stable/c/7f8fc03712194fd4e2df28af7f7f7a38205934ef https://git.kernel.org/stable/c/82ba7b8cf9f6e3bf392a9f08ba3d1c0b200ccb94 https://git.kernel.org/stable/c/8b465bedc2b417fd27c1d1ab7122882b4b60b1a0 https://git.kernel.org/stable/c/cecc65827ef3df9754e097582d89569139e6cd1e

Other References

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html https://cert-portal.siemens.com/productcert/html/ssa-032379.html

Frequently Asked Questions

What is CVE-2025-38706? +

In the Linux kernel, the following vulnerability has been resolved: ASoC: core: Check for rtd == NULL in snd_soc_remove_pcm_runtime() snd_soc_remove_pcm_runtime() might be called with rtd == NULL which will leads to null pointer dereference. This was reproduced with topology loading and marking a link as ignore due to missing hardware component on the system. On module removal the soc_tplg_remove_link() would call snd_soc_remove_pcm_runtime() with rtd == NULL since the link was ignored, no runtime was created. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-38706? +

CVE-2025-38706 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-38706? +

CVE-2025-38706 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-38706? +

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-2025-38706