Author: cem
Date: Fri Apr 14 00:22:28 2017
New Revision: 316801
URL: https://svnweb.freebsd.org/changeset/base/316801
Log:
fsck(8): Don't overrun mount device buffer
Apply a very similar fix to r299460 (fsck_ffs) to apparently duplicated code
in fsck.
Reported by: Coverity
CID: 1006789
Sponsored by: Dell EMC Isilon
Modified:
head/sbin/fsck/fsutil.c
Modified: head/sbin/fsck/fsutil.c
==============================================================================
--- head/sbin/fsck/fsutil.c Fri Apr 14 00:15:34 2017 (r316800)
+++ head/sbin/fsck/fsutil.c Fri Apr 14 00:22:28 2017 (r316801)
@@ -172,6 +172,9 @@ getmntpt(const char *name)
statfsp = &mntbuf[i];
dev_name = statfsp->f_mntfromname;
if (*dev_name != '/') {
+ if (strlen(_PATH_DEV) + strlen(dev_name) + 1 >
+ sizeof(statfsp->f_mntfromname))
+ continue;
strcpy(device, _PATH_DEV);
strcat(device, dev_name);
strcpy(statfsp->f_mntfromname, device);
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