Trending
CVE-2026-64217

CVE detail

CVE-2026-64217

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix overrun check in netfs_extract_user_iter() Fix netfs_extract_user_iter() so that if iov_iter_extract_pages() overfills pages[], then those pages don't get included in the iterator constructed at the end of the function. If there was an overfill, memory corruption has already happened.

CVSS 7.8 · HighBuzz score 22.9

Buzz score

Why this CVE is surfacing

Buzz score total 22.9

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 17.9 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

17.9

5 evidence mentions in the snapshot

Diversity score

5.0

1 sources across 1 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 5; within the 30d window
Peak daily: 5; highest bucket

Evidence

Source links by recency

Newest mentions first

5 source links · newest first

https://git.kernel.org/stable/c/f48b9157f0f611fa436c360648603d5ded719b12git.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 24, 2026, 4:16 PM
https://git.kernel.org/stable/c/afeb32d9bf9aaeea51d0f723a19f14afb73bd94dgit.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 24, 2026, 4:16 PM
https://git.kernel.org/stable/c/96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9git.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 24, 2026, 4:16 PM
https://git.kernel.org/stable/c/0ef37eef83fad3542ee06db2940433ae1a92b39dgit.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 24, 2026, 4:16 PM
https://git.kernel.org/stable/c/00efe58bbdcc93272d579ca24bfc912563f4a204git.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 24, 2026, 4:16 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-64217.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

Product query unavailableNo valid raw CPE 2.3 product record is available for this CVE, so no product-level Shodan query is shown.

Exact CVE query

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Shodan's exact vuln: filter is separate from the product searches above and requires an eligible paid Shodan plan.

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Metadata

Canonical fields

NVD status

Received

Published

Jul 24, 2026

Modified

Jul 27, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Unavailable

Vendor classifications

Unavailable

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Local. The attacker needs local access to the vulnerable system.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): Low. The attacker needs basic user-level privileges.
User Interaction (UI): None. Exploitation does not require another user to act.
Scope (S): Unchanged. Impacts remain within the vulnerable security authority.
Confidentiality Impact (C): High. There is a total or serious impact to this security property.
Integrity Impact (I): High. There is a total or serious impact to this security property.
Availability Impact (A): High. There is a total or serious impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses