diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2022-02-14 15:59:17 +0400 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2022-03-04 11:29:34 +0100 |
| commit | 02a8ee2e1840d13db065f418969bcfcb404a94cb (patch) | |
| tree | 564c955d6ea6fa136943b20fc5153b225440aa80 /ui/clipboard.c | |
| parent | cb8962c146b2633a4b04562281de9b2703bba849 (diff) | |
| download | qemu-02a8ee2e1840d13db065f418969bcfcb404a94cb.zip qemu-02a8ee2e1840d13db065f418969bcfcb404a94cb.tar.gz qemu-02a8ee2e1840d13db065f418969bcfcb404a94cb.tar.bz2 | |
ui/clipboard: fix use-after-free regression
The same info may be used to update the clipboard, and may be freed
before being ref'ed again.
Fixes: 70a54b01693ed ("ui: avoid compiler warnings from unused clipboard info variable")
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220214115917.1679568-1-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'ui/clipboard.c')
| -rw-r--r-- | ui/clipboard.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/ui/clipboard.c b/ui/clipboard.c index 5f15cf8..9079ef8 100644 --- a/ui/clipboard.c +++ b/ui/clipboard.c @@ -66,8 +66,10 @@ void qemu_clipboard_update(QemuClipboardInfo *info) notifier_list_notify(&clipboard_notifiers, ¬ify); - qemu_clipboard_info_unref(cbinfo[info->selection]); - cbinfo[info->selection] = qemu_clipboard_info_ref(info); + if (cbinfo[info->selection] != info) { + qemu_clipboard_info_unref(cbinfo[info->selection]); + cbinfo[info->selection] = qemu_clipboard_info_ref(info); + } } QemuClipboardInfo *qemu_clipboard_info(QemuClipboardSelection selection) |