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NVD / CVE Program· CNA Linux

CVE-2025-38706: ASoC: core: Check for rtd == NULL in snd_soc_remove_pcm_runtime()

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 2d91cb261cac6d885954b8f5da28b5c176c18131, 2fce20decc6a83f16dd73744150c4e7ea6c97c21, 41f53afe53a57a7c50323f99424b598190acf192; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1.

Low priority for now. Upgrade to Linux Linux 2d91cb261cac6d885954b8f5da28b5c176c18131, 2fce20decc6a83f16dd73744150c4e7ea6c97c21, 41f53afe53a57a7c50323f99424b598190acf192; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 4, 2025
Updated
Nov 5, 2026
EPSS
0.2% · 10th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux11.0
  • linux linux kernel5.11 and later · before 5.15.190
  • linux linux kernel5.16 and later · before 6.1.149
  • linux linux kernel6.2 and later · before 6.6.103
  • linux linux kernel5.6 and later · before 5.10.241
  • linux linux kernel6.13 and later · before 6.15.11
  • linux linux kernel6.16 and later · before 6.16.2
  • linux linux kernel6.7 and later · before 6.12.43

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.6affected
    • 50cd9b5317d5593d0a33f4227f56ddcc1bf66604 and later · before 8b465bedc2b417fd27c1d1ab7122882b4b60b1a0affected · git
    • 50cd9b5317d5593d0a33f4227f56ddcc1bf66604 and later · before 82ba7b8cf9f6e3bf392a9f08ba3d1c0b200ccb94affected · git
    • 50cd9b5317d5593d0a33f4227f56ddcc1bf66604 and later · before 7f8fc03712194fd4e2df28af7f7f7a38205934efaffected · git
    • 50cd9b5317d5593d0a33f4227f56ddcc1bf66604 and later · before 41f53afe53a57a7c50323f99424b598190acf192affected · git
    • 50cd9b5317d5593d0a33f4227f56ddcc1bf66604 and later · before 2fce20decc6a83f16dd73744150c4e7ea6c97c21affected · git
    • 50cd9b5317d5593d0a33f4227f56ddcc1bf66604 and later · before cecc65827ef3df9754e097582d89569139e6cd1eaffected · git
    • 50cd9b5317d5593d0a33f4227f56ddcc1bf66604 and later · before 7ce0a7255ce97ed7c54afae83fdbce712a1f0c9eaffected · git
    • 50cd9b5317d5593d0a33f4227f56ddcc1bf66604 and later · before 2d91cb261cac6d885954b8f5da28b5c176c18131affected · git
    • before 5.6not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.153-16.1.153-1
Debian:13linuxbefore 6.12.43-16.12.43-1
Debian:14linuxbefore 6.16.3-16.16.3-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-38704Sep 4, 2025 · rcu/nocb: Fix possible invalid rdp's->nocb_cb_kthread pointer access
    31Monitor
  • ← EarlierCVE-2025-38705Sep 4, 2025 · drm/amd/pm: fix null pointer access
    22Monitor
  • Later →CVE-2025-38707Sep 4, 2025 · fs/ntfs3: Add sanity check for file name
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2d91cb261cac6d885954b8f5da28b5c176c18131Vendor (CNA)
Linux Linux2fce20decc6a83f16dd73744150c4e7ea6c97c21Vendor (CNA)
Linux Linux41f53afe53a57a7c50323f99424b598190acf192Vendor (CNA)
Linux Linux7ce0a7255ce97ed7c54afae83fdbce712a1f0c9eVendor (CNA)
Linux Linux7f8fc03712194fd4e2df28af7f7f7a38205934efVendor (CNA)
Linux Linux82ba7b8cf9f6e3bf392a9f08ba3d1c0b200ccb94Vendor (CNA)
Linux Linux8b465bedc2b417fd27c1d1ab7122882b4b60b1a0Vendor (CNA)
Linux Linuxcecc65827ef3df9754e097582d89569139e6cd1eVendor (CNA)
azl3 kernel 6.6.96.2-2 on Azure Linux 3.06.6.104.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.153-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records