Headline
CVE-2022-3134: patch 9.0.0389: crash when 'tagfunc' closes the window · vim/vim@ccfde4d
Use After Free in GitHub repository vim/vim prior to 9.0.0388.
@@ -690,6 +690,16 @@ do_tag(
max_num_matches = MAXCOL; // If less than max_num_matches
// found: all matches found.
// A tag function may do anything, which may cause various
// information to become invalid. At least check for the tagstack
// to still be the same.
if (tagstack != curwin->w_tagstack)
{
emsg(_(e_window_unexpectedly_close_while_searching_for_tags));
FreeWild(new_num_matches, new_matches);
break;
}
// If there already were some matches for the same name, move them
// to the start. Avoids that the order changes when using
// “:tnext” and jumping to another file.
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