>Number: 188951
>Category: bin
>Synopsis: Undefined behavior at line 135 in part_wizard.c (snprintf).
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Apr 24 11:40:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator: Henning Petersen
>Release: FreeBSD-current
>Organization:
>Environment:
>Description:
Undefined behavior in snprintf found by cppcheck.
>How-To-Repeat:
>Fix:
Patch attached with submission follows:
--- usr.sbin/bsdinstall/partedit/part_wizard.c (revision 264867)
+++ usr.sbin/bsdinstall/partedit/part_wizard.c (working copy)
@@ -130,9 +130,13 @@
else
strcat(diskdesc, " Disk");
- if (desc != NULL)
- snprintf(diskdesc, sizeof(diskdesc),
- "%s <%s>", diskdesc, desc);
+ if (desc != NULL) {
+ size_t len;
+ len = strlen(diskdesc);
+ snprintf(diskdesc + len,
+ sizeof(diskdesc) - len,
+ " <%s>", desc);
+ }
disks[n-1].text = strdup(diskdesc);
disks[n-1].help = NULL;
>Release-Note:
>Audit-Trail:
>Unformatted:
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