[pim/kleopatra/release/26.08] src/crypto/gui: Fix use-after-free on repeated decryption in the notepad

Git commit bab9290301d3c28ba938040a1edb545af4eb0b1b by Ingo Klöcker, on behalf of Ingo Klöcker.
Committed on 27/07/2026 at 14:00.
Pushed by kloecker into branch 'release/26.08'.

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

Suggested-by: Vadim
BUG: 523471
FIXED-IN: 26.08.0
(cherry picked from commit 0c1ef70538e44d68b3afb6b1a6134626950eb0d7)

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

https://invent.kde.org/pim/kleopatra/-/commit/bab9290301d3c28ba938040a1edb545af4eb0b1b

diff --git a/src/crypto/gui/signencryptwidget.cpp b/src/crypto/gui/signencryptwidget.cpp
index bc869e67e..1213e3861 100644
--- a/src/crypto/gui/signencryptwidget.cpp
+++ b/src/crypto/gui/signencryptwidget.cpp
@@ -619,6 +619,7 @@ void SignEncryptWidget::clearAddedRecipients()
         d->mRecpLayout->removeWidget(w);
         delete w;
     }
+    d->mUnknownWidgets.clear();
 
     for (auto &key : std::as_const(d->mAddedKeys)) {
         removeRecipient(key);