Trending
CVE-2026-63824

CVE detail

CVE-2026-63824

In the Linux kernel, the following vulnerability has been resolved: KEYS: fix overflow in keyctl_pkey_params_get_2() The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided. Fix the bug by allocating internal output with the size of the maximum length of the cryptographic primitive instead of caller provided size.

CVSS 7.8 · HighBuzz score 33.0

Buzz score

Why this CVE is surfacing

Buzz score total 33.0

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 23.0 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

23.0

9 evidence mentions in the snapshot

Diversity score

10.0

2 sources across 2 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: 9; within the 30d window
Peak daily: 8; highest bucket

Evidence

Source links by recency

Newest mentions first

9 source links · newest first

CVE-2026-63824 KEYS: fix overflow in keyctl_pkey_params_get_2()Microsoft MSRC
Information published.
vendormsrc.microsoft.comJul 20, 2026, 8:06 AM
https://git.kernel.org/stable/c/cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0bgit.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 19, 2026, 12:16 PM
https://git.kernel.org/stable/c/b1e247338bc71826a2d2def3e0874c34749df69agit.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 19, 2026, 12:16 PM
https://git.kernel.org/stable/c/b11c1fa32667692a2c0566e10163758e786e430cgit.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 19, 2026, 12:16 PM
https://git.kernel.org/stable/c/670fc6a311ed321522b7fff92cf0fc376b4f6e78git.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 19, 2026, 12:16 PM
https://git.kernel.org/stable/c/622ec2dcd59f21623f2a7ab773c80ceb7d555e3agit.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 19, 2026, 12:16 PM
https://git.kernel.org/stable/c/5966e4e2ba213ab7ad559166152eb4f1f170dd2cgit.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 19, 2026, 12:16 PM
https://git.kernel.org/stable/c/5165f1cc727f1322456735df212d8e26ec237a8dgit.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 19, 2026, 12:16 PM
https://git.kernel.org/stable/c/0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3git.kernel.org
No excerpt available.
Patchgit.kernel.orgJul 19, 2026, 12:16 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-2026-63824.

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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vuln:CVE-2026-63824Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Received

Published

Jul 19, 2026

Modified

Jul 20, 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