Security readout for executives and security teams
Plain-English summary
A flaw in the Linux GPIO virtual-user component can let a locally authenticated user trigger a write beyond an internal buffer. Successful exploitation could compromise confidentiality, integrity, and availability. The supplied evidence does not establish remote reachability or active exploitation.
Executive priority
Treat this as a high-priority local privilege and system-integrity risk, especially on shared, development, edge, or appliance systems. It is not supported as an internet-scale emergency by the supplied evidence. Expedite vendor-supported updates where untrusted local access and GPIO virtuser availability overlap.
Technical view
The gpio virtuser write path relied on simple_write_to_buffer, which truncates oversized input to available space. The vulnerable logic did not independently reject excessive input before zero termination, creating a potential out-of-bounds write. CVSS 3.1 rates it 7.8: local access, low complexity, low privileges, no user interaction, and high impact across confidentiality, integrity, and availability.
Likely exposure
Exposure is most likely on systems running an affected Linux kernel where the GPIO virtuser functionality is present and accessible to a low-privileged local account. The bundle lists 6.11, 6.12.32, 6.14.10, and 6.15 as affected, but also contains an anomalous “0” entry and incomplete version boundaries.
Exploitation context
The supplied record marks this CVE as absent from KEV and provides no evidence of active exploitation. Its CVSS vector indicates exploitation requires local, low-privileged access rather than direct network access. Practical exploitability may depend on kernel configuration, component availability, and permissions, which the sources do not fully document.
Researcher notes
The record identifies an out-of-bounds write corrected through explicit input-size validation followed by safe zero termination. Exact vulnerable-to-fixed release boundaries, required kernel configuration, reachable interface, and distribution package mappings are not established by the bundle. The duplicated commit entry and anomalous version “0” reduce confidence in automated version matching.
Mitigation direction
- Apply a vendor-supported kernel update containing the cited upstream stable fix.
- Prioritize multi-user systems and hosts where untrusted users can access GPIO virtuser functionality.
- Restrict local access to the affected interface until updates are deployed.
- Check distribution or appliance vendor guidance for precise fixed package versions.
Validation and detection
- Inventory kernel versions across Linux hosts and appliances.
- Determine whether GPIO virtuser functionality is built, loaded, or otherwise available.
- Verify installed kernel sources or vendor packages include the cited corrective commits.
- Review local permissions governing access to the affected interface.
- Confirm vendor advisories because the supplied affected-version data has ambiguous boundaries.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-2025-38082 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- 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
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9LinuxVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/afe090366f470f77e140ff3407db813f57852c04CVE reference, Linux
- https://git.kernel.org/stable/c/b96feaaa0fda1e3871b438143c3446954b32d3a7CVE reference, Linux
- https://git.kernel.org/stable/c/7118be7c6072f40391923543fdd1563b8d56377cCVE reference, Linux
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.