From 3d74e7b452e8473ebc3cc7afefa82e21c5bb030d Mon Sep 17 00:00:00 2001
From: Thomas Queiroz <thomasqueirozb@gmail.com>
Date: Tue, 2 Nov 2021 19:22:03 -0300
Subject: [PATCH] env: prevent panic when unsetting invalid variable

---
 src/uu/env/src/env.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/uu/env/src/env.rs b/src/uu/env/src/env.rs
index 4fdf825dc..042d2c380 100644
--- a/src/uu/env/src/env.rs
+++ b/src/uu/env/src/env.rs
@@ -244,6 +244,13 @@ fn run_env(args: impl uucore::Args) -> UResult<()> {
 
     // unset specified env vars
     for name in &opts.unsets {
+        if name.is_empty() || name.contains(0 as char) || name.contains('=') {
+            return Err(USimpleError::new(
+                125,
+                format!("cannot unset {}: Invalid argument", name.quote()),
+            ));
+        }
+
         env::remove_var(name);
     }