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CVE Record

CVE-2025-38494: HID: core: do not bypass hid_hw_raw_request

In the Linux kernel, the following vulnerability has been resolved: HID: core: do not bypass hid_hw_raw_request hid_hw_raw_request() is actually useful to ensure the provided buffer and length are valid. Directly calling in the low level transport driver function bypassed those checks and allowed invalid paramto be used.

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A flaw in the Linux kernel’s HID handling bypassed checks intended to reject invalid buffer sizes and parameters. A locally authenticated attacker with limited privileges could potentially compromise confidentiality, integrity, or availability. The source bundle rates it 7.8 High, but does not establish active exploitation.

Executive priority

Treat this as a high-priority kernel update, especially on shared or multi-user Linux systems. It is not described as remotely exploitable, and active exploitation is unconfirmed. Schedule prompt remediation through normal kernel maintenance, accelerating systems that permit local access by untrusted users.

Technical view

Linux HID core code directly invoked a low-level transport function instead of hid_hw_raw_request(), bypassing buffer and length validation. The kernel stable fixes restore the validated request path. The supplied CVSS vector indicates local access, low complexity, low privileges, no user interaction, and potentially high impact across confidentiality, integrity, and availability.

Likely exposure

Exposure is limited to Linux systems running affected kernel builds where the vulnerable HID request path is present. The supplied version data is ambiguous and includes duplicated or unclear entries, so determine exposure using distribution advisories and confirmation that the applicable stable fix was backported.

Exploitation context

The CVSS assessment describes a local, low-privilege attack rather than a remotely reachable flaw. The bundle marks this CVE as absent from KEV and provides no evidence of exploitation in the wild, public exploit availability, or a demonstrated attack chain.

Researcher notes

The root issue is validation bypass at the HID core-to-transport boundary. Eight stable-tree fix references are supplied. Exact vulnerable-version interpretation is uncertain because the affected data contains duplicated hashes and unusual version entries, including “0”; verify commit ancestry or distribution backports rather than relying solely on version-string comparison.

Mitigation direction

  • Install a supported vendor kernel package containing the applicable Linux stable fix.
  • Reboot affected systems so the corrected kernel is actually running.
  • Consult distribution guidance where kernel versions use vendor-specific backports.
  • Prioritize multi-user systems where untrusted users can obtain local access.

Validation and detection

  • Inventory exact running kernel builds across Linux hosts.
  • Check vendor advisories for whether each build is affected or fixed.
  • Confirm the applicable stable commit or documented backport is present.
  • Verify systems booted into the updated kernel after maintenance.
  • Monitor vendor advisories for revised affected-version or exploitation information.
Prepared
Confidence
medium
Sources
12

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2025-38494 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:L/UI:N/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
1ADP providers
11Source links

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:L/UI:N/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-2025-38494Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux4fa5a7f76cc7b6ac87f57741edd2b124851d119f, 4fa5a7f76cc7b6ac87f57741edd2b124851d119f, 4fa5a7f76cc7b6ac87f57741edd2b124851d119f, 4fa5a7f76cc7b6ac87f57741edd2b124851d119f, 4fa5a7f76cc7b6ac87f57741edd2b124851d119f, 4fa5a7f76cc7b6ac87f57741edd2b124851d119f, 4fa5a7f76cc7b6ac87f57741edd2b124851d119f, 4fa5a7f76cc7b6ac87f57741edd2b124851d119funaffected
LinuxLinux3.15, 0, 5.4.297, 5.10.241, 5.15.190, 6.1.147, 6.6.100, 6.12.40, 6.15.8, 6.16affected
Weakness

CWE details

No CWE listed

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