From bacad275863667aecfdc4ad230581b85b8fe0a52 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Tue, 15 Feb 2011 16:08:13 +0000 Subject: [PATCH] i2cset: Check number of arguments for block data writes git-svn-id: http://lm-sensors.org/svn/i2c-tools/trunk@5922 7894878c-1315-0410-8ee3-d5d059ff63e0 --- tools/i2cset.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/tools/i2cset.c b/tools/i2cset.c index e47c9d4..e835465 100644 --- a/tools/i2cset.c +++ b/tools/i2cset.c @@ -223,7 +223,11 @@ int main(int argc, char *argv[]) fprintf(stderr, "Error: PEC not supported for I2C block writes!\n"); help(); } - for (len = 0; len < (int)sizeof(block) && len + flags + 5 < argc; len++) { + if (argc > (int)sizeof(block) + flags + 5) { + fprintf(stderr, "Error: Too many arguments!\n"); + help(); + } + for (len = 0; len + flags + 5 < argc; len++) { value = strtol(argv[flags + len + 4], &end, 0); if (*end || value < 0 || value > 0xff) { fprintf(stderr, "Error: Block data value invalid!\n");