Ideally, strlen(cur->string.pointer) and strlen(out) would be the same.
But this code is using strscpy() to avoid a potential buffer overflow.
So in the same way we should take the strlen() of the smaller string to
avoid a buffer overflow in the caller, gmin_get_var_int().
Fixes: 387041cda44e ("media: atomisp: improve sensor detection code to use _DSM table")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c b/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c
index c718a74ea70a..88d4499233b9 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c
@@ -1357,7 +1357,7 @@ static int gmin_get_config_dsm_var(struct device *dev,
dev_info(dev, "found _DSM entry for '%s': %s\n", var,
cur->string.pointer);
strscpy(out, cur->string.pointer, *out_len);
- *out_len = strlen(cur->string.pointer);
+ *out_len = strlen(out);
ACPI_FREE(obj);
return 0;
--
2.39.2
