A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Oracle Corporation Oracle Linux affected
Version Status Constraints
8 affected —
9 affected —
10 affected —

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://linux.oracle.com/cve/CVE-2026-21991.html cve-icon cve-icon
History

Mon, 16 Mar 2026 21:45:00 +0000

Type Values Removed Values Added
Description A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-03-16T21:36:44.856Z

Reserved: 2026-01-05T18:07:34.717Z

Link: CVE-2026-21991

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-16T22:16:18.397

Modified: 2026-03-16T22:16:18.397

Link: CVE-2026-21991

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.