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NVD / CVE Program· CNA Linux

CVE-2025-38729: ALSA: usb-audio: Validate UAC3 power domain descriptors, too

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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 07c8d78dbb5e0ff8b23f7fd69cd1d4e2ba22b3dc, 1666207ba0a5973735ef010812536adde6174e81, 29b415ec09f5b9d1dfa2423b826725a8c8796b9a; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1; cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 5.15.200.1-1.

Low priority for now. Upgrade to Linux Linux 07c8d78dbb5e0ff8b23f7fd69cd1d4e2ba22b3dc, 1666207ba0a5973735ef010812536adde6174e81, 29b415ec09f5b9d1dfa2423b826725a8c8796b9a; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1; cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 5.15.200.1-1 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: ALSA: usb-audio: Validate UAC3 power domain descriptors, too UAC3 power domain descriptors need to be verified with its variable bLength for avoiding the unexpected OOB accesses by malicious firmware, too.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Sep 4, 2025
Updated
Nov 5, 2026
EPSS
0.2% · 9th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 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.

Follow CVE-2025-38729

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 kernel5.5 and later · before 5.10.241
  • 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 kernel4.17 and later · before 5.4.297
  • 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
  • linux linux kernel6.17

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

    • 4.17affected
    • 9a2fe9b801f585baccf8352d82839dcd54b300cf and later · before 1666207ba0a5973735ef010812536adde6174e81affected · git
    • 9a2fe9b801f585baccf8352d82839dcd54b300cf and later · before ebc9e06b6ea978a20abf9b87d41afc51b2d745acaffected · git
    • 9a2fe9b801f585baccf8352d82839dcd54b300cf and later · before f03418bb9d542f44df78eec2eff4ac83c0a8ac0daffected · git
    • 9a2fe9b801f585baccf8352d82839dcd54b300cf and later · before 40714daf4d0448e1692c78563faf0ed0f9d9b5c7affected · git
    • 9a2fe9b801f585baccf8352d82839dcd54b300cf and later · before 07c8d78dbb5e0ff8b23f7fd69cd1d4e2ba22b3dcaffected · git
    • 9a2fe9b801f585baccf8352d82839dcd54b300cf and later · before cd08d390d15b204cac1d3174f5f149a20c52e61aaffected · git
    • 9a2fe9b801f585baccf8352d82839dcd54b300cf and later · before 29b415ec09f5b9d1dfa2423b826725a8c8796b9aaffected · git
    • 9a2fe9b801f585baccf8352d82839dcd54b300cf and later · before 452ad54f432675982cc0d6eb6c40a6c86ac61dbdaffected · git
    • 9a2fe9b801f585baccf8352d82839dcd54b300cf and later · before d832ccbc301fbd9e5a1d691bdcf461cdb514595faffected · git

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
Red Hat:rhel_aus:8.4::baseosbpftoolbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseosbpftool-debuginfobefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernelbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-abi-stablelistsbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-corebefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debugbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debug-corebefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debug-debuginfobefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debug-develbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debug-modulesbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debug-modules-extrabefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debuginfobefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debuginfo-common-x86_64before 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-develbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-docbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-modulesbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-modules-extrabefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-toolsbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-tools-debuginfobefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-tools-libsbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4
Red Hat:rhel_aus:8.4::baseosperfbefore 0:4.18.0-305.182.1.el8_40:4.18.0-305.182.1.el8_4

+96

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-2025-38727Sep 4, 2025 · netlink: avoid infinite retry looping in netlink_unicast()
    22Monitor
  • ← EarlierCVE-2025-38728Sep 4, 2025 · smb3: fix for slab out of bounds on mount to ksmbd
    28Monitor
  • Later →CVE-2025-38730Sep 4, 2025 · io_uring/net: commit partial buffers on retry
    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 Linux07c8d78dbb5e0ff8b23f7fd69cd1d4e2ba22b3dcVendor (CNA)
Linux Linux1666207ba0a5973735ef010812536adde6174e81Vendor (CNA)
Linux Linux29b415ec09f5b9d1dfa2423b826725a8c8796b9aVendor (CNA)
Linux Linux40714daf4d0448e1692c78563faf0ed0f9d9b5c7Vendor (CNA)
Linux Linux452ad54f432675982cc0d6eb6c40a6c86ac61dbdVendor (CNA)
Linux Linuxcd08d390d15b204cac1d3174f5f149a20c52e61aVendor (CNA)
Linux Linuxd832ccbc301fbd9e5a1d691bdcf461cdb514595fVendor (CNA)
Linux Linuxebc9e06b6ea978a20abf9b87d41afc51b2d745acVendor (CNA)
Linux Linuxf03418bb9d542f44df78eec2eff4ac83c0a8ac0dVendor (CNA)
azl3 kernel 6.6.96.2-2 on Azure Linux 3.06.6.104.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.05.15.200.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.153-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.3.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-427.100.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage 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
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 (11 more)

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

All records