From 18abd266ee973d895393fa281ae227753c622522 Mon Sep 17 00:00:00 2001
From: Piotr Bartman-Szwarc <prbartman@invisiblethingslab.com>
Date: Mon, 17 Jun 2024 21:17:55 +0200
Subject: [PATCH] q-dev: handle invalid values

---
 qubesusbproxy/core3ext.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/qubesusbproxy/core3ext.py b/qubesusbproxy/core3ext.py
index 3313db3..09e3ccd 100644
--- a/qubesusbproxy/core3ext.py
+++ b/qubesusbproxy/core3ext.py
@@ -298,7 +298,11 @@ def _sanitize(
                     if i >= len(untrusted_device_desc):
                         break
                     hex_code = untrusted_device_desc[i - 1: i + 1]
-                    c = chr(int(hex_code, base=16))
+                    try:
+                        hex_value = int(hex_code, 16)
+                        c = chr(hex_value)
+                    except ValueError:
+                        c = '_'
 
             if c in safe_chars_set:
                 result += c