sprintf() (still used in #define sdio_config_attr()) is vulnerable to the buffer overflow. Use the new-fangled sysfs_emit() instead. Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool. Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxx> --- This patch is against the 'next' branch of Ulf Hansson's 'mmc.git' repo. --- drivers/mmc/core/sdio_bus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: mmc/drivers/mmc/core/sdio_bus.c =================================================================== --- mmc.orig/drivers/mmc/core/sdio_bus.c +++ mmc/drivers/mmc/core/sdio_bus.c @@ -35,7 +35,7 @@ field##_show(struct device *dev, struct struct sdio_func *func; \ \ func = dev_to_sdio_func (dev); \ - return sprintf(buf, format_string, args); \ + return sysfs_emit(buf, format_string, args); \ } \ static DEVICE_ATTR_RO(field)
