svn commit: r233296 - head/lib/libc/gen
Sergey Kandaurov
pluknet at FreeBSD.org
Thu Mar 22 09:42:28 UTC 2012
Author: pluknet
Date: Thu Mar 22 09:42:27 2012
New Revision: 233296
URL: http://svn.freebsd.org/changeset/base/233296
Log:
Prevent fs_file NULL pointer dereference in fixfsfile() uncovered after r1.5
when passing damaged user-supplied fstab file data.
MFC after: 1 week
Modified:
head/lib/libc/gen/fstab.c
Modified: head/lib/libc/gen/fstab.c
==============================================================================
--- head/lib/libc/gen/fstab.c Thu Mar 22 09:29:07 2012 (r233295)
+++ head/lib/libc/gen/fstab.c Thu Mar 22 09:42:27 2012 (r233296)
@@ -91,7 +91,7 @@ fixfsfile()
struct stat sb;
struct statfs sf;
- if (strcmp(_fs_fstab.fs_file, "/") != 0)
+ if (_fs_fstab.fs_file != NULL &&strcmp(_fs_fstab.fs_file, "/") != 0)
return;
if (statfs("/", &sf) != 0)
return;
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