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CVE Record

CVE-2024-42088: ASoC: mediatek: mt8195: Add platform entry for ETDM1_OUT_BE dai link

In the Linux kernel, the following vulnerability has been resolved: ASoC: mediatek: mt8195: Add platform entry for ETDM1_OUT_BE dai link Commit e70b8dd26711 ("ASoC: mediatek: mt8195: Remove afe-dai component and rework codec link") removed the codec entry for the ETDM1_OUT_BE dai link entirely instead of replacing it with COMP_EMPTY(). This worked by accident as the remaining COMP_EMPTY() platform entry became the codec entry, and the platform entry became completely empty, effectively the same as COMP_DUMMY() since snd_soc_fill_dummy_dai() doesn't do anything for platform entries. This causes a KASAN out-of-bounds warning in mtk_soundcard_common_probe() in sound/soc/mediatek/common/mtk-soundcard-driver.c: for_each_card_prelinks(card, i, dai_link) { if (adsp_node && !strncmp(dai_link->name, "AFE_SOF", strlen("AFE_SOF"))) dai_link->platforms->of_node = adsp_node; else if (!dai_link->platforms->name && !dai_link->platforms->of_node) dai_link->platforms->of_node = platform_node; } where the code expects the platforms array to have space for at least one entry. Add an COMP_EMPTY() entry so that dai_link->platforms has space.

HighCVSS 7.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux audio-driver configuration error for MediaTek MT8195 can make the kernel access memory outside an allocated platform array during sound-card initialization. The reported impact includes limited data exposure, significant integrity compromise, and system disruption, but exploitation requires local low-privilege access.

Executive priority

Treat this as a targeted high-priority kernel update for MT8195-based devices, not an organization-wide internet emergency. Promptly identify applicable embedded or endpoint systems, confirm vendor-fixed builds, and schedule remediation according to device criticality and local-access exposure.

Technical view

The ETDM1_OUT_BE DAI link lost its codec entry without receiving the intended empty replacement. Its remaining platform entry was consequently interpreted as the codec, leaving no allocated platform slot. mtk_soundcard_common_probe() then dereferences dai_link->platforms as though an entry exists, producing a KASAN out-of-bounds warning. The referenced stable-kernel commits add COMP_EMPTY() to allocate that slot.

Likely exposure

Exposure appears limited to affected Linux kernels using the MediaTek MT8195 ASoC sound-card path. The supplied version data lists 6.8, 6.9.8, and 6.10 among affected identifiers, but does not clearly express complete version ranges. Confirm exact applicability against the running distribution's vendor advisory and backport history.

Exploitation context

The CVSS vector describes a local, low-complexity attack requiring low privileges and no user interaction. The bundle does not establish a practical exploit, public weaponization, remote reachability, or active exploitation. It is not listed in KEV.

Researcher notes

The source bundle provides no CWE and its affected-version representation is ambiguous, including an unexplained "0" identifier. The root cause and correction are specific and supported by upstream stable commits, but real-world exploitability and precise downstream distribution exposure are not established.

Mitigation direction

  • Upgrade to a vendor-supported kernel containing the applicable referenced stable fix.
  • Confirm distribution backports because package versions may not directly match upstream kernel versions.
  • Prioritize MT8195 systems where the affected ASoC audio path is enabled or initialized.
  • Review vendor guidance before applying branch-specific kernel changes.

Validation and detection

  • Inventory kernel builds and identify systems using MediaTek MT8195 audio hardware.
  • Check vendor changelogs for the applicable referenced fix commit or documented backport.
  • Review kernel and KASAN logs for out-of-bounds warnings in mtk_soundcard_common_probe().
  • After updating, confirm sound-card initialization completes without related memory-safety warnings.
Prepared
Confidence
medium
Sources
5

Public sources used

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-2024-42088 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/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
4Source 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
7.3CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H1.85.5Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.3High
CVSS 3.1 vector shape for CVE-2024-42088Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux81051a495a9a23c0339d2ae1aa6e4477ed7268c8, e70b8dd26711704b1ff1f1b4eb3d048ba69e29da, e70b8dd26711704b1ff1f1b4eb3d048ba69e29daunaffected
LinuxLinux6.8, 0, 6.9.8, 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.