Signed-off-by: Guenter Roeck <guenter.roeck@xxxxxxxxxxxx>
---
tools/i2cset.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/tools/i2cset.c b/tools/i2cset.c
index 8856d71..c59186b 100644
--- a/tools/i2cset.c
+++ b/tools/i2cset.c
@@ -219,11 +219,15 @@ int main(int argc, char *argv[])
}
if (size == I2C_SMBUS_BLOCK_DATA || size == I2C_SMBUS_I2C_BLOCK_DATA) {
pec = argv[argc-1][1] == 'p';
+ if (argc > (int)sizeof(block) + flags + 5) {
+ fprintf(stderr, "Error: Bad number of arguments!\n");
+ help();
+ }
if (pec && size == I2C_SMBUS_I2C_BLOCK_DATA) {
fprintf(stderr, "Error: PEC not supported for I2C block writes!\n");
help();
}
- for (len = 0; len < (int)sizeof(block) && len + flags + 5 < argc; len++) {
+ 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");
--
1.7.0.4
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