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NVD / CVE Program· CNA Linux

CVE-2026-81017: platform/chrome: sensorhub: Bound the EC-reported sensor number

Noroxi assessment

Priority: Monitor (action score 33/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.18% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 2b602ecf6193ecb9720c78b6728d7e09370b1ff1, 324880f94ba3c6269a607e04f78a4dd4a66b3f53, 3a76b87e1d065183e2e7ae5b800cb1f6e84f543d.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 2b602ecf6193ecb9720c78b6728d7e09370b1ff1, 324880f94ba3c6269a607e04f78a4dd4a66b3f53, 3a76b87e1d065183e2e7ae5b800cb1f6e84f543d or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: platform/chrome: sensorhub: Bound the EC-reported sensor number Each EC FIFO event carries an 8-bit sensor number (in->sensor_num). cros_ec_sensorhub_ring_handler() validates the FIFO event count, the per-read count and the ring bound, but not the sensor number, which cros_ec_sensor_ring_process_event() then uses unchecked to index sensorhub->batch_state[] - allocated with only sensorhub->sensor_num entries. A sensor number of sensor_num or larger is an out-of-bounds read and write of batch_state[]. Validate the sensor number in the ring handler, where each event is read from the EC, and drop a malformed event before it is used.

HighCVSS 8.4 · v3.1—No exploit Fix available
Published
Sep 11, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 8th percentile
CWE
—

Report tools

JSON

Action score

33

Monitor

Low priority for now.

CVSS
33 / 40 · 8.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
8.4
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.7affected
    • 145d59baff5944b71551ac518d7fd7d377a9c820 and later · before 3a76b87e1d065183e2e7ae5b800cb1f6e84f543daffected · git
    • 145d59baff5944b71551ac518d7fd7d377a9c820 and later · before 2b602ecf6193ecb9720c78b6728d7e09370b1ff1affected · git
    • 145d59baff5944b71551ac518d7fd7d377a9c820 and later · before 324880f94ba3c6269a607e04f78a4dd4a66b3f53affected · git
    • 145d59baff5944b71551ac518d7fd7d377a9c820 and later · before d1b4add68dabfdd6481a4fa198bf3b473d2634d7affected · git
    • 145d59baff5944b71551ac518d7fd7d377a9c820 and later · before 3d2636dce0a8fe9eecad29010699847be425dc80affected · git
    • 145d59baff5944b71551ac518d7fd7d377a9c820 and later · before 5eaf7faa99578ae090030d1e2e6ea3b37a615496affected · git
    • 145d59baff5944b71551ac518d7fd7d377a9c820 and later · before 4d9bf63ed74f859c6698bc01d8fb216ef9253867affected · git
    • 145d59baff5944b71551ac518d7fd7d377a9c820 and later · before 833740a2333c2e4db4e02e3d0ffba04e8718a5f3affected · git
    • before 5.7not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-81015Sep 11, 2026 · platform/x86/amd/pmc: Fix LPS0 and debugfs leaks when STB init fails
    31Monitor
  • ← EarlierCVE-2026-81016Sep 11, 2026 · platform/x86/amd/pmc: Propagate SMU errors and validate S2D address
    30Monitor
  • Later →CVE-2026-81018Sep 11, 2026 · platform/x86: think-lmi: Free system certificate signatures
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2b602ecf6193ecb9720c78b6728d7e09370b1ff1Vendor (CNA)
Linux Linux324880f94ba3c6269a607e04f78a4dd4a66b3f53Vendor (CNA)
Linux Linux3a76b87e1d065183e2e7ae5b800cb1f6e84f543dVendor (CNA)
Linux Linux3d2636dce0a8fe9eecad29010699847be425dc80Vendor (CNA)
Linux Linux4d9bf63ed74f859c6698bc01d8fb216ef9253867Vendor (CNA)
Linux Linux5eaf7faa99578ae090030d1e2e6ea3b37a615496Vendor (CNA)
Linux Linux833740a2333c2e4db4e02e3d0ffba04e8718a5f3Vendor (CNA)
Linux Linuxd1b4add68dabfdd6481a4fa198bf3b473d2634d7Vendor (CNA)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records