Security readout for executives and security teams
Plain-English summary
A race condition in the Linux MPU3050 gyroscope driver exposes the device interface before initialization finishes. The supplied CVSS assessment indicates that a low-privileged local attacker could potentially affect data confidentiality, integrity, and system availability. The sources do not establish remote reachability or exploitation in the wild.
Executive priority
Prioritize normal high-severity patching, especially for shared systems permitting untrusted local users or workloads. This is not supported as an internet-scale emergency because access is local and active exploitation is unconfirmed. Require owners to verify vendor kernel status rather than relying only on upstream version labels.
Technical view
The mpu3050 probe path called iio_device_register() before completing initialization, potentially exposing partially initialized state to concurrent access. Linux resolved this by moving registration to the end of probe and adjusting unregistration accordingly. The supplied CVSS v3.1 score is 7.8 with local, low-privileged, no-interaction attack requirements.
Likely exposure
Exposure is most likely on systems using affected Linux kernels where the MPU3050 IIO driver is present or usable. Exploitation requires local low-privileged access. The supplied affected-version data contains ambiguous entries and does not provide clear version ranges, so distributor-specific kernel mapping is necessary.
Exploitation context
The bundle marks this CVE as absent from KEV and provides no evidence of active exploitation, public proof-of-concept code, or observed attacks. The race is timing-dependent, but the supplied CVSS rates attack complexity as low. No remote attack path is identified.
Researcher notes
The disclosed root cause is registration ordering within the mpu3050 probe lifecycle. The sources do not describe the precise corruptible object, triggering sequence, reliability, or demonstrated impact. Multiple Linux stable commit references appear to represent branch-specific fixes. Avoid inferring affected ranges from the bundle's isolated version strings.
Mitigation direction
- Update to a vendor-supported kernel containing the applicable Linux stable fix.
- Check Linux distributor or appliance-vendor guidance for exact fixed package versions.
- Reduce untrusted local code execution on exposed systems until updates are applied.
Validation and detection
- Inventory exact kernel and distributor build versions across potentially affected systems.
- Determine whether the MPU3050 IIO driver is built, loaded, or operationally required.
- Confirm installed vendor kernels incorporate the applicable referenced stable commit.
- Recheck vendor advisories because the bundle's affected-version boundaries are unclear.
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-2026-31761 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.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/22487ef85f6dd9499ddf49b85a08afc50a3f1992CVE reference, Linux
- https://git.kernel.org/stable/c/caec338f91469f0a70b68165185afa3abc994545CVE reference, Linux
- https://git.kernel.org/stable/c/051ca43b0e0e4b66bfd349cd53ccf231ad1d69b7CVE reference, Linux
- https://git.kernel.org/stable/c/2a4537653d200fda2a8516083459f8ff6194f8fcCVE reference, Linux
- https://git.kernel.org/stable/c/92f18aa86302fe83e0726a1191015f427d4ff056CVE reference, Linux
- https://git.kernel.org/stable/c/cc3de12a5612ee25df7fb549cb7b3e4cc8bfaf9cCVE reference, Linux
- https://git.kernel.org/stable/c/59a317f8215674c8330817770497301bfb2c1b99CVE reference, Linux
- https://git.kernel.org/stable/c/4c05799449108fb0e0a6bd30e65fffc71e60db4dCVE reference, Linux
- https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlCVE reference, siemens-SADP
- https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlCVE reference, siemens-SADP
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.