While browsing through the notes for nethack 5.0.0, found out a
security update for nethack.

Also took the opportunity to beef up the fork handler into using
setres[gu]id

And nethack 3.6 will need the updated conflict marker for 5.0.0.

Index: Makefile
===================================================================
RCS file: /build/data/openbsd/cvs/ports/games/nethack/3.6/Makefile,v
diff -u -p -r1.13 Makefile
--- Makefile	28 Jan 2025 10:17:37 -0000	1.13
+++ Makefile	27 Jun 2026 10:06:02 -0000
@@ -1,5 +1,5 @@
 COMMENT =	dungeon explorin', hackin', game.  Piece of cake
-V =		3.6.6
+V =		3.6.7
 # what we have compatible with
 BASEV =		3.6.0
 DISTNAME =	nethack-$V
@@ -7,7 +7,6 @@ PKGNAME =	${DISTNAME}
 CATEGORIES =	games
 SITES =		https://www.nethack.org/download/$V/
 DISTFILES =	nethack-${V:S/.//g}-src.tgz
-REVISION =	1
 
 HOMEPAGE =	http://nethack.org/
 
@@ -24,7 +23,7 @@ CONFIG =		x-config
 WANTLIB += X11 Xaw Xext Xmu Xt
 .endif
 RUN_DEPENDS = games/hackdata
-WRKDIST =	${WRKDIR}/NetHack-NetHack-$V_Released
+WRKDIST =	${WRKDIR}/NetHack-$V
 
 # GPL
 PERMIT_PACKAGE =	Yes
Index: distinfo
===================================================================
RCS file: /build/data/openbsd/cvs/ports/games/nethack/3.6/distinfo,v
diff -u -p -r1.3 distinfo
--- distinfo	16 Feb 2021 08:40:06 -0000	1.3
+++ distinfo	27 Jun 2026 10:05:13 -0000
@@ -1,2 +1,2 @@
-SHA256 (nethack-366-src.tgz) = z94MOrbdfCKuguHlpZq4AVIwTrI/sG4xKUOSceVkPtI=
-SIZE (nethack-366-src.tgz) = 5577633
+SHA256 (nethack-367-src.tgz) = mM9n323r+WaKYXRaqEwJvKs2Ll0z9blE7FFV1E0qrLI=
+SIZE (nethack-367-src.tgz) = 5577415
Index: patches/patch-src_files_c
===================================================================
RCS file: /build/data/openbsd/cvs/ports/games/nethack/3.6/patches/patch-src_files_c,v
diff -u -p -r1.4 patch-src_files_c
--- patches/patch-src_files_c	11 Mar 2022 19:04:43 -0000	1.4
+++ patches/patch-src_files_c	27 Jun 2026 10:09:16 -0000
@@ -1,13 +1,24 @@
 Index: src/files.c
 --- src/files.c.orig
 +++ src/files.c
-@@ -1397,7 +1397,9 @@ boolean uncomp;
+@@ -1373,6 +1373,7 @@ boolean uncomp;
+ #endif
+     f = fork();
+     if (f == 0) { /* child */
++	int uid, gid;
+ #ifdef TTY_GRAPHICS
+         /* any error messages from the compression must come out after
+          * the first line, because the more() to let the user read
+@@ -1397,8 +1398,10 @@ boolean uncomp;
              redirect(filename, RDBMODE, stdin, uncomp);
              redirect(cfn, WRBMODE, stdout, uncomp);
          }
-+	(void) setegid(getgid());
-         (void) setgid(getgid());
-+	(void) seteuid(getuid());
-         (void) setuid(getuid());
+-        (void) setgid(getgid());
+-        (void) setuid(getuid());
++	gid = getgid();
++	uid = getuid();
++	(void) setresgid(gid, gid, gid);
++	(void) setresuid(gid, gid, gid);
          (void) execv(args[0], (char *const *) args);
          perror((char *) 0);
+         (void) fprintf(stderr, "Exec to %scompress %s failed.\n",
Index: pkg/PLIST
===================================================================
RCS file: /build/data/openbsd/cvs/ports/games/nethack/3.6/pkg/PLIST,v
diff -u -p -r1.5 PLIST
--- pkg/PLIST	11 Mar 2022 19:04:43 -0000	1.5
+++ pkg/PLIST	25 Jun 2026 14:49:54 -0000
@@ -1,6 +1,6 @@
 @option no-default-conflict
 @option is-branch
-@conflict nethack->=${BASEV}
+@conflict nethack->=${BASEV},<5.0
 @newgroup ${GAMEGRP}:806
 @comment bin/license
 @comment bin/nethack