diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-17 00:24:37 -0300 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2012-05-17 11:21:11 -0400 |
| commit | 2d89eba9cc7be4dfabe523067bff245632181536 (patch) | |
| tree | c3a551dc91e0fd61a6c1bf4013a5fd6c4a5e6220 | |
| parent | 6df3d28f699821fc6fe47ef7a6ace0e3eccc1790 (diff) | |
si4713-i2c: avoid potential buffer overflow on si4713
commit dc6b845044ccb7e9e6f3b7e71bd179b3cf0223b6 upstream.
While compiling it with Fedora 15, I noticed this issue:
inlined from ‘si4713_write_econtrol_string’ at drivers/media/radio/si4713-i2c.c:1065:24:
arch/x86/include/asm/uaccess_32.h:211:26: error: call to ‘copy_from_user_overflow’ declared with attribute error: copy_from_user() buffer size is not provably correct
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Reviewed-by: Eugene Teo <eugeneteo@kernel.sg>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
| -rw-r--r-- | drivers/media/radio/si4713-i2c.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/media/radio/si4713-i2c.c b/drivers/media/radio/si4713-i2c.c index ab63dd5b25c4..6ce2fb16f8fa 100644 --- a/drivers/media/radio/si4713-i2c.c +++ b/drivers/media/radio/si4713-i2c.c @@ -1004,7 +1004,7 @@ static int si4713_write_econtrol_string(struct si4713_device *sdev, char ps_name[MAX_RDS_PS_NAME + 1]; len = control->size - 1; - if (len > MAX_RDS_PS_NAME) { + if (len < 0 || len > MAX_RDS_PS_NAME) { rval = -ERANGE; goto exit; } @@ -1026,7 +1026,7 @@ static int si4713_write_econtrol_string(struct si4713_device *sdev, char radio_text[MAX_RDS_RADIO_TEXT + 1]; len = control->size - 1; - if (len > MAX_RDS_RADIO_TEXT) { + if (len < 0 || len > MAX_RDS_RADIO_TEXT) { rval = -ERANGE; goto exit; } |