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Gentoo DTrace Arbitrary File Creation Normal Risk 202604-04

gentoo
Calendar Grey April 17, 2026
Dist Gentoo Esm H88
Explore the DTrace dtprobed arbitrary file creation risk and update guidance in Gentoo's security advisory dated April 17, 2026.
A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.

Summary

A vulnerability has been found in dtprobed that allows for arbitrary file creation through specially crafted USDT provider names.

Topics%20covered

Topics Covered

security advisory Gentoo arbitrary file creation normal dtrace dtprobed

Resolution

All DTrace users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-debug/dtrace-2.0.6"

References

[ 1 ] CVE-2026-21991 https://nvd.nist.gov/vuln/detail/CVE-2026-21991

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202604-04
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity
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Severity: Normal
Title: DTrace: Arbitrary file creation via dtprobed
Date: April 17, 2026
Bugs: #971491
ID: 202604-04

Topics%20covered

Topics Covered

security advisory Gentoo arbitrary file creation normal dtrace dtprobed

Synopsis

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

Background

DTrace is a dynamic tracing tool for analysing or debugging the whole system. Specifically, dtprobed is a component of the DTrace system that keeps track of USDT probes within running processes, parsing and storing the DOF they provide for later consumption by dtrace proper.

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Affected Packages

Package Vulnerable Unaffected ---------------- ------------ ------------ dev-debug/dtrace < 2.0.6 >= 2.0.6

Impact

The worst possible outcome is the ability for an attacker to run arbitrary code via the maliciously created file.

Workaround

There is no known workaround at this time.

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