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bsdlabel: limit to 8 partitions

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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
(cherry picked from commit 3f4f82c0d7)
This commit is contained in:
Ed Maste 2024-01-22 21:05:58 -05:00
parent 590e02d3c0
commit a323dd42bc
1 changed files with 1 additions and 1 deletions
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2
sbin/bsdlabel/bsdlabel.c
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@ -63,7 +63,7 @@ static char sccsid[] = "@(#)disklabel.c 8.2 (Berkeley) 1/7/94";
#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>