Trending
CVE-2026-53075

CVE detail

CVE-2026-53075

In the Linux kernel, the following vulnerability has been resolved: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls /dev/ppp open is currently authorized against file->f_cred->user_ns, while unattached administrative ioctls operate on current->nsproxy->net_ns. As a result, a local unprivileged user can create a new user namespace with CLONE_NEWUSER, gain CAP_NET_ADMIN only in that new user namespace, and still issue PPPIOCNEWUNIT, PPPIOCATTACH, or PPPIOCATTCHAN against an inherited network namespace. Require CAP_NET_ADMIN in the user namespace that owns the target network namespace before handling unattached PPP administrative ioctls. This preserves normal pppd operation in the network namespace it is actually privileged in, while rejecting the userns-only inherited-netns case.

CVSS 8.8 · HighBuzz score 27.0

Buzz score

Why this CVE is surfacing

Buzz score total 27.0

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 22.0 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

22.0

8 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: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

8 source links · newest first

https://git.kernel.org/stable/c/c9edd90c57ae23692fff6b049fdfa4572a9fd532git.kernel.org
No excerpt available.
Patchgit.kernel.orgJun 24, 2026, 5:17 PM
https://git.kernel.org/stable/c/954745d0223e7caec917c0b2d1a889ff56fa6e54git.kernel.org
No excerpt available.
Patchgit.kernel.orgJun 24, 2026, 5:17 PM
https://git.kernel.org/stable/c/67e901e28d177ac9a9bed76d69ce3471e704a89egit.kernel.org
No excerpt available.
Patchgit.kernel.orgJun 24, 2026, 5:17 PM
https://git.kernel.org/stable/c/5080e188c914110034bbc569d5cfa2f06204681dgit.kernel.org
No excerpt available.
Patchgit.kernel.orgJun 24, 2026, 5:17 PM
https://git.kernel.org/stable/c/5013be175c7ffd8b39efbc3c9c4db5b10b85fea8git.kernel.org
No excerpt available.
Patchgit.kernel.orgJun 24, 2026, 5:17 PM
https://git.kernel.org/stable/c/3b2c2157dc2afc5c17cd7238afefca92f1ef330egit.kernel.org
No excerpt available.
Patchgit.kernel.orgJun 24, 2026, 5:17 PM
https://git.kernel.org/stable/c/2bb6379416fd19f44c3423a00bfd8626259f6067git.kernel.org
No excerpt available.
Patchgit.kernel.orgJun 24, 2026, 5:17 PM
https://git.kernel.org/stable/c/1a8a51ce85075a56a743b6f142606dd2696a391cgit.kernel.org
No excerpt available.
Patchgit.kernel.orgJun 24, 2026, 5:17 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.

Related records

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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-2026-53075.

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.

cpe:2.3:o:linux:linux_kernelSearch this product on Shodan

Exact CVE query

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Metadata

Canonical fields

NVD status

Analyzed

Published

Jun 24, 2026

Modified

Jul 21, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Unavailable

Vendor classifications

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): Changed. Impacts can cross into a different 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