GLSA 202604-04: DTrace: Arbitrary file creation via dtprobed

http://security.gentoo.org/

Severity:	normal
Title:	DTrace: Arbitrary file creation via dtprobed
Date:	04/17/2026
Bugs:	#971491
ID:	202604-04

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.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-debug/dtrace	< 2.0.6	>= 2.0.6	All supported architectures

Description

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

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.

Resolution

All DTrace users should upgrade to the latest version:

          # emerge --sync
          # emerge --ask --oneshot --verbose ">=dev-debug/dtrace-2.0.6"

References

CVE-2026-21991

Availability

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

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.