From 3f4f82c0d7791bddf2d6f2c29d9f2f8c48c712e2 Mon Sep 17 00:00:00 2001
From: Ed Maste <emaste@FreeBSD.org>
Date: Mon, 22 Jan 2024 21:05:58 -0500
Subject: [PATCH] bsdlabel: limit to 8 partitions

bsdlabel is intended to support up to 20 partitions, but the disklabel
struct has a d_partitions array with only BSD_NPARTS_MIN (8) entries.
Previously, an attempt to operate on a bsdlabel with more than eight
partitions resulted in a buffer overflow.

As a stopgap limit bsdlabel to 8 partitions until this is fixed
properly.

PR:		276517
---
 sbin/bsdlabel/bsdlabel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sbin/bsdlabel/bsdlabel.c b/sbin/bsdlabel/bsdlabel.c
index 2c03117e344..b831c8ba4ec 100644
--- a/sbin/bsdlabel/bsdlabel.c
+++ b/sbin/bsdlabel/bsdlabel.c
@@ -50,7 +50,7 @@
 #include <sys/disk.h>
 #define DKTYPENAMES
 #define FSTYPENAMES
-#define MAXPARTITIONS	20
+#define MAXPARTITIONS	8 /* XXX should be 20, but see PR276517 */
 #include <sys/disklabel.h>
 
 #include <unistd.h>