[plasma/plasma-desktop/Plasma/6.7] kcms/gamecontroller: kcms/gamecontroller: Fix std::out_of_range exception

Git commit ed508fbc7b39dba3369f57858b07fdb921e9e8b6 by Méven Car.
Committed on 20/07/2026 at 09:59.
Pushed by meven into branch 'Plasma/6.7'.

kcms/gamecontroller: Fix std::out_of_range exception

If either slash==std::string::npos or devicePath.empty() then
the code can throw a std::out_of_range exception. Fix that
and make sure the code not throws a std::out_of_range exception.

Based on a patch done by Adam Doda.

BUG: 522886


(cherry picked from commit 932f29636ccd264005cb1af579c0c1a11976cbf7)

Co-authored-by: Sebastian Sauer <[email protected]>

M  +1    -1    kcms/gamecontroller/udevmatcher.cpp

https://invent.kde.org/plasma/plasma-desktop/-/commit/ed508fbc7b39dba3369f57858b07fdb921e9e8b6

diff --git a/kcms/gamecontroller/udevmatcher.cpp b/kcms/gamecontroller/udevmatcher.cpp
index 24febd0291..794119336c 100644
--- a/kcms/gamecontroller/udevmatcher.cpp
+++ b/kcms/gamecontroller/udevmatcher.cpp
@@ -52,7 +52,7 @@ std::string UDevMatcher::deviceToUdevId(const std::string &device_path)
     qCDebug(KCM_GAMECONTROLLER) << "Looking for ID of " << devicePath;
 
     // If the bit after the last / is a digit, stop, we found it
-    while (!std::isdigit(devicePath.at(slash + 1))) {
+    while (slash != std::string::npos && (slash + 1) < devicePath.length() && !std::isdigit(devicePath.at(slash + 1))) {
         // Remove the last bit
         devicePath = devicePath.substr(0, slash);