Erase size is limited to 32bit unsigned integer, but value parsed from user is limited up to size_t C type.
Signed-off-by: Pali Rohár <[email protected]> --- drivers/mtd/devices/block2mtd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index 7c887f1..ee47cdd 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -419,7 +419,7 @@ static int block2mtd_setup2(const char *val) if (token[1]) { ret = parse_num(&erase_size, token[1]); - if (ret) { + if (ret || erase_size > U32_MAX) { pr_err("illegal erase size\n"); return 0; } -- 1.7.9.5
