[pim/kleopatra] src/crypto/gui: Fix use-after-free on repeated decryption in the notepad

Git commit 0c1ef70538e44d68b3afb6b1a6134626950eb0d7 by Ingo Klöcker, on behalf of Ingo Klöcker.
Committed on 27/07/2026 at 13:55.
Pushed by kloecker into branch 'master'.

Fix use-after-free on repeated decryption in the notepad

Suggested-by: Vadim
BUG: 523471
FIXED-IN: 26.08.0

M  +1    -0    src/crypto/gui/signencryptwidget.cpp

https://invent.kde.org/pim/kleopatra/-/commit/0c1ef70538e44d68b3afb6b1a6134626950eb0d7

diff --git a/src/crypto/gui/signencryptwidget.cpp b/src/crypto/gui/signencryptwidget.cpp
index 444af1b4b..eb6e62ee1 100644
--- a/src/crypto/gui/signencryptwidget.cpp
+++ b/src/crypto/gui/signencryptwidget.cpp
@@ -600,6 +600,7 @@ void SignEncryptWidget::clearAddedRecipients()
         d->mRecpLayout->removeWidget(w);
         delete w;
     }
+    d->mUnknownWidgets.clear();
 
     for (auto &key : std::as_const(d->mAddedKeys)) {
         removeRecipient(key);