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| author | Patrick Georgi <patrick@georgi-clan.de> | 2014-08-03 12:14:25 +0200 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2014-08-03 15:19:27 +0200 |
| commit | 440daf786a85f8c1f4959c519811e3d6e10586bc (patch) | |
| tree | d059feb4d26e25175737933d338b0d47bb292224 /util | |
| parent | edb0a61be4030cc6bdc605332204bb27c9f1b98f (diff) | |
| download | coreboot-440daf786a85f8c1f4959c519811e3d6e10586bc.tar.xz | |
ifdtool: Avoid potential buffer overflow
Filenames of 4091 bytes or more lead to a buffer overflow.
Change-Id: I1b4b3932af096f0fcbfb783ab708ed273d3a844e
Found-by: Coverity Scan
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6476
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'util')
| -rw-r--r-- | util/ifdtool/ifdtool.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/util/ifdtool/ifdtool.c b/util/ifdtool/ifdtool.c index 0425b1cd49..deef1b1fee 100644 --- a/util/ifdtool/ifdtool.c +++ b/util/ifdtool/ifdtool.c @@ -552,7 +552,8 @@ static void write_image(char *filename, char *image, int size) char new_filename[FILENAME_MAX]; // allow long file names int new_fd; - strncpy(new_filename, filename, FILENAME_MAX); + // - 5: leave room for ".new\0" + strncpy(new_filename, filename, FILENAME_MAX - 5); strncat(new_filename, ".new", FILENAME_MAX - strlen(filename)); printf("Writing new image to %s\n", new_filename); |