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Commit 7c806883 authored by ZhengShunQian's avatar ZhengShunQian Committed by Greg Kroah-Hartman
Browse files

nvmem: core: fix the out-of-range leak in read/write() 



The position to read/write must be less than max
register size.

Signed-off-by: default avatarZhengShunQian <zhengsq@rock-chips.com>
Acked-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9ffecb10

drivers/nvmem/core.c

+2 −2
Original line number Diff line number Diff line
@@ -67,7 +67,7 @@ static ssize_t bin_attr_nvmem_read(struct file *filp, struct kobject *kobj, 
	int rc;



	/* Stop the user from reading */

	if (pos > nvmem->size)

	if (pos >= nvmem->size)

		return 0;



	if (pos + count > nvmem->size)
@@ -92,7 +92,7 @@ static ssize_t bin_attr_nvmem_write(struct file *filp, struct kobject *kobj, 
	int rc;



	/* Stop the user from writing */

	if (pos > nvmem->size)

	if (pos >= nvmem->size)

		return 0;



	if (pos + count > nvmem->size)