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CVE Record

CVE-2024-41038: firmware: cs_dsp: Prevent buffer overrun when processing V2 alg headers

In the Linux kernel, the following vulnerability has been resolved: firmware: cs_dsp: Prevent buffer overrun when processing V2 alg headers Check that all fields of a V2 algorithm header fit into the available firmware data buffer. The wmfw V2 format introduced variable-length strings in the algorithm block header. This means the overall header length is variable, and the position of most fields varies depending on the length of the string fields. Each field must be checked to ensure that it does not overflow the firmware data buffer. As this ia bugfix patch, the fixes avoid making any significant change to the existing code. This makes it easier to review and less likely to introduce new bugs.

HighCVSS 7.8Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A malformed WMFW V2 firmware file can cause the Linux cs_dsp firmware parser to read or write beyond its available buffer. Successful exploitation could compromise confidentiality, integrity, and availability, but requires local access and user interaction. Exposure is concentrated on systems using the affected driver and firmware format, not every Linux system.

Executive priority

Treat as a high-priority targeted kernel update, especially for endpoints or appliances using the affected DSP firmware path. It is not supported as an internet-wide emergency: exploitation is local, requires interaction, and is not evidenced as active. Accelerate patching where untrusted users or firmware inputs are plausible.

Technical view

The cs_dsp parser did not verify that every field in a variable-length WMFW V2 algorithm header remained within the firmware data buffer. Because string lengths shift later fields, malformed headers could cause a buffer overrun. The resolution adds field-by-field bounds checks. CVSS 3.1 is 7.8: local, low complexity, no privileges, user interaction required.

Likely exposure

Potentially exposed systems run an affected Linux kernel, use the cs_dsp firmware code, and process WMFW V2 firmware. The supplied version data names Linux 5.16 and later branches, including 6.1.100, 6.6.41, 6.9.10, and 6.10, but does not clearly express exact ranges. Confirm status with distribution or vendor advisories.

Exploitation context

The supplied record is not marked as CISA KEV and provides no evidence of active exploitation or a public exploit. The CVSS vector indicates a local attack requiring user interaction, without prior privileges. Practical exploitation also appears dependent on reaching the affected firmware parsing path with malformed WMFW V2 data.

Researcher notes

The security boundary failure occurs while advancing through variable-length V2 algorithm headers. Later field offsets depend on preceding string lengths, so validating only a fixed header size is insufficient. The fix checks each field against remaining firmware-buffer bounds. The bundle does not identify a CWE, confirmed exploit, affected hardware list, or unambiguous version ranges.

Mitigation direction

  • Install a vendor-supported kernel containing the applicable stable fix.
  • Consult the Linux distribution or device vendor for precise affected and fixed versions.
  • Restrict untrusted users and processes from supplying or replacing DSP firmware files.
  • Prioritize systems that actively use cs_dsp and WMFW V2 firmware.

Validation and detection

  • Inventory kernel versions on systems using Cirrus DSP firmware functionality.
  • Confirm whether cs_dsp loads WMFW V2 firmware in each deployed configuration.
  • Compare vendor kernel builds against the four referenced stable fixes.
  • Verify the updated kernel is active after remediation.
  • Review vendor advisories where supplied version boundaries remain ambiguous.
Prepared
Confidence
medium
Sources
7

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2024-41038 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
2ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2024-41038Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxf6bc909e7673c30abcbdb329e7d0aa2e83c103d7, f6bc909e7673c30abcbdb329e7d0aa2e83c103d7, f6bc909e7673c30abcbdb329e7d0aa2e83c103d7, f6bc909e7673c30abcbdb329e7d0aa2e83c103d7unaffected
LinuxLinux5.16, 0, 6.1.100, 6.6.41, 6.9.10, 6.10affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.