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CVE-2026-21882
HIGHCVSS 8.4Published: Mar 2, 2026Verified by: gemini-3.1-flash-lite-preview
Description
theshit's Improper Privilege Dropping Allows Local Privilege Escalation via Command Re-execution
How AI Introduced This
The application fails to correctly drop or reset process privileges before re-executing commands, allowing a local attacker to maintain elevated permissions.
Causality Analysis
✓
CONFIRMED — 0fc1b4f70117
- Vulnerability
- Improper Privilege Dropping
- Root Cause
- The application fails to correctly drop or reset process privileges before re-executing commands, allowing a local attacker to maintain elevated permissions.
- Pattern
re-executing commands without explicit privilege dropping or credential sanitization- Causal Chain
- The commit introduced a new execution flow using `std::process::Command` inside a spawned thread to handle command timeouts. Because this implementation lacks explicit privilege dropping (e.g., using setuid/setgid or credential sanitization), any command re-executed via this path inherits the security context of the parent process, leading to the privilege escalation vulnerability.
- Reasoning
- The blamed commit introduced the logic for executing commands using `std::process::Command` within a spawned thread and a timeout mechanism. By moving the command execution into this new structure without implementing privilege dropping or credential sanitization, it established the vulnerable pattern of re-executing commands in a way that inherits the parent process's elevated privileges.
Verified by gemini-3.1-flash-lite-preview
AI Signal Details
AI Signals in 0fc1b4f
GitHub CopilotAuthor email
Copilot@users.noreply.github.com95%GitHub Copilotcommitter email
Copilot@users.noreply.github.com95%GitHub Copilotauthor name
copilot-swe-agent[bot]95%Bug-Introducing Commits(1)
0fc1b4fAI
Implement timeout functionality for command execution
copilot-swe-agent[bot]Aug 22, 2025src/fix.rsBlame: 90%