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NVD / CVE Program· CNA Linux

CVE-2026-64225: octeontx2-af: CGX: add bounds check to cgx_speed_mbps index

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.12% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 2c3d26b4a62454945ba9ef3af3174d3e40e7afef, 47a4cf2229be379cf88f92e32e1240337cd6273f, 8201bf45cc7c1c1a09290c4db8ab1e19801f8fec.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 2c3d26b4a62454945ba9ef3af3174d3e40e7afef, 47a4cf2229be379cf88f92e32e1240337cd6273f, 8201bf45cc7c1c1a09290c4db8ab1e19801f8fec 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: octeontx2-af: CGX: add bounds check to cgx_speed_mbps index cgx_speed_mbps has 13 elements but RESP_LINKSTAT_SPEED can yield values 0-15. If it returns a value >= 13, this causes an out-of-bounds array access. Add a bounds check and default to speed 0 if the index is out of range.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Jul 24, 2026
Updated
Nov 6, 2026
EPSS
0.1% · 2th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2026-64225

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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.20 and later · before 5.10.259
  • linux linux kernel5.11 and later · before 5.15.210
  • linux linux kernel5.16 and later · before 6.1.176
  • linux linux kernel6.2 and later · before 6.6.143
  • linux linux kernel6.7 and later · before 6.12.92
  • linux linux kernel6.13 and later · before 6.18.34
  • linux linux kernel6.19 and later · before 7.0.11
  • linux linux kernel7.1

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
    • 61071a871ea6eb2125ece91c1a0dbb124a318c8a and later · before 94071141f00bc414e8f8f7f5db3b5143d535299faffected · git
    • 61071a871ea6eb2125ece91c1a0dbb124a318c8a and later · before 985b5e38ac4f4d5ff03c8bfd8484353b440a1579affected · git
    • 61071a871ea6eb2125ece91c1a0dbb124a318c8a and later · before 93d3dc81098cd60fb74d434ba7985ddfd9de5acbaffected · git
    • 61071a871ea6eb2125ece91c1a0dbb124a318c8a and later · before e043017ac429caee73bd30c5a725659f1a3a4568affected · git
    • 61071a871ea6eb2125ece91c1a0dbb124a318c8a and later · before 8201bf45cc7c1c1a09290c4db8ab1e19801f8fecaffected · git
    • 61071a871ea6eb2125ece91c1a0dbb124a318c8a and later · before 47a4cf2229be379cf88f92e32e1240337cd6273faffected · git
    • 61071a871ea6eb2125ece91c1a0dbb124a318c8a and later · before 2c3d26b4a62454945ba9ef3af3174d3e40e7afefaffected · git
    • 61071a871ea6eb2125ece91c1a0dbb124a318c8a and later · before c0bf0a4f3f1f5f57aa83e1400ba4f56f0abfd542affected · 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 6.1.176-16.1.176-1
Debian:13linuxbefore 6.12.94-16.12.94-1
Debian:14linuxbefore 7.0.12-17.0.12-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-64223Jul 24, 2026 · wifi: mac80211: consume only present negotiated TTLM maps
    32Monitor
  • ← EarlierCVE-2026-64224Jul 24, 2026 · octeontx2-pf: fix double free in rvu_rep_rsrc_init()
    31Monitor
  • Later →CVE-2026-64227Jul 24, 2026 · ACPI: driver: Check ACPI_COMPANION() against NULL during probe
    22Monitor

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 Linux2c3d26b4a62454945ba9ef3af3174d3e40e7afefVendor (CNA)
Linux Linux47a4cf2229be379cf88f92e32e1240337cd6273fVendor (CNA)
Linux Linux8201bf45cc7c1c1a09290c4db8ab1e19801f8fecVendor (CNA)
Linux Linux93d3dc81098cd60fb74d434ba7985ddfd9de5acbVendor (CNA)
Linux Linux94071141f00bc414e8f8f7f5db3b5143d535299fVendor (CNA)
Linux Linux985b5e38ac4f4d5ff03c8bfd8484353b440a1579Vendor (CNA)
Linux Linuxc0bf0a4f3f1f5f57aa83e1400ba4f56f0abfd542Vendor (CNA)
Linux Linuxe043017ac429caee73bd30c5a725659f1a3a4568Vendor (CNA)
debian:linux6.1.176-1 · 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.

  • CVE-2026-640185 days apartnet: mana: validate rx_req_idx to prevent out-of-bounds array access
    37Monitor
  • CVE-2026-4311079 days apartwifi: brcmfmac: validate bsscfg indices in IF events
    35Monitor
  • CVE-2026-4317279 days apartwifi: iwlwifi: fix 22000 series SMEM parsing
    35Monitor
  • CVE-2026-23246128 days apartwifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration
    35Monitor
  • CVE-2026-643241 days apartudf: validate free block extents against the partition length
    31Monitor
  • CVE-2026-643301 days apartusb: typec: tcpm: Validate SVID index in svdm_consume_modes()
    31Monitor

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.
  • A low-privileged account is enough.
  • 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
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-129 · Improper Validation of Array Index

CVSS vector

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

nvd-primary

Attack context

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

ATT&CK techniques

—

Change log

  1. SSVC exploitation— → none
  2. 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