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NVD / CVE Program· CNA Linux

CVE-2026-89470: power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS

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: 0.14% (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 304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60, 3262977a05b23d1be9fc86727a2b490ec997543e, 3ce9218639ff62d011eb8aca0943aa670a654c7b.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60, 3262977a05b23d1be9fc86727a2b490ec997543e, 3ce9218639ff62d011eb8aca0943aa670a654c7b 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: power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS Currently the cros_usbpd-charger driver probe iterates based on raw charger port count returned by the embedded controller. The only check is against the number of USB PD ports which the embedded controller also defines. A malicious embedded controller could return an inaccurate port count (up to 255) resulting in an out of bounds write and subsequent memory corruption. Update helper functions in cros_usbpd-charger to limit port counts to EC_USB_PD_MAX_PORTS.

HighCVSS 8.4 · v3.1—No exploit Fix available
Published
Sep 11, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 3th 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.

Follow CVE-2026-89470

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.

—

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

    • 4.20affected
    • 3af15cfacd1eef7f223802d49a88cae23c509183 and later · before e951b65ef1699439079b723ca5c72cbe44771647affected · git
    • 3af15cfacd1eef7f223802d49a88cae23c509183 and later · before 3ce9218639ff62d011eb8aca0943aa670a654c7baffected · git
    • 3af15cfacd1eef7f223802d49a88cae23c509183 and later · before dce1750ddbd3380b1f6090dda2b07d2ebea2261daffected · git
    • 3af15cfacd1eef7f223802d49a88cae23c509183 and later · before 3262977a05b23d1be9fc86727a2b490ec997543eaffected · git
    • 3af15cfacd1eef7f223802d49a88cae23c509183 and later · before fd5f289cca04ad869b34fc9ccb647670bfdb60acaffected · git
    • 3af15cfacd1eef7f223802d49a88cae23c509183 and later · before 4b1f2be1e1b74a50386ba718de3d62bfcf5ee701affected · git
    • 3af15cfacd1eef7f223802d49a88cae23c509183 and later · before 304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60affected · git
    • 3af15cfacd1eef7f223802d49a88cae23c509183 and later · before 657cd3a42e937276262c0a8ae6b01a87004309deaffected · git
    • before 4.20not 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-2026-89468Sep 11, 2026 · power: supply: lp8788-charger: fix use-after-free on remove
    0Monitor
  • ← EarlierCVE-2026-89469Sep 11, 2026 · power: supply: lp8727: fix use-after-free in lp8727_release_irq()
    33Monitor
  • Later →CVE-2026-89471Sep 11, 2026 · power: supply: cros_usbpd-charger: bound the EC-reported port count
    33Monitor

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 Linux304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60Vendor (CNA)
Linux Linux3262977a05b23d1be9fc86727a2b490ec997543eVendor (CNA)
Linux Linux3ce9218639ff62d011eb8aca0943aa670a654c7bVendor (CNA)
Linux Linux4b1f2be1e1b74a50386ba718de3d62bfcf5ee701Vendor (CNA)
Linux Linux657cd3a42e937276262c0a8ae6b01a87004309deVendor (CNA)
Linux Linuxdce1750ddbd3380b1f6090dda2b07d2ebea2261dVendor (CNA)
Linux Linuxe951b65ef1699439079b723ca5c72cbe44771647Vendor (CNA)
Linux Linuxfd5f289cca04ad869b34fc9ccb647670bfdb60acVendor (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.

—

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