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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-04-20 11:27:36 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-04-24 14:09:50 -0300
commitd2b213f7b76f187c4391079c7581d3a08b940133 (patch)
tree7886d8e55e636dbfd7819bcbc4ff03a3489e91b0
parent867e835f4db4eba6d49072382cc05fc210c4ed1c (diff)
V4L/DVB (7729): Fix VIDIOCGAP corruption in ivtv
Frank Bennett reported that ivtv was causing skype to crash. With help from one of their developers he showed it was a kernel problem. VIDIOCGCAP copies a name into a fixed length buffer - ivtv uses names that are too long and does not truncate them so corrupts a few bytes of the app data area. Possibly the names also want trimming but for now this should fix the corruption case. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
-rw-r--r--drivers/media/video/ivtv/ivtv-ioctl.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/media/video/ivtv/ivtv-ioctl.c b/drivers/media/video/ivtv/ivtv-ioctl.c
index 90f59c4155ae..15cac1812122 100644
--- a/drivers/media/video/ivtv/ivtv-ioctl.c
+++ b/drivers/media/video/ivtv/ivtv-ioctl.c
@@ -742,7 +742,8 @@ int ivtv_v4l2_ioctls(struct ivtv *itv, struct file *filp, unsigned int cmd, void
memset(vcap, 0, sizeof(*vcap));
strcpy(vcap->driver, IVTV_DRIVER_NAME); /* driver name */
- strcpy(vcap->card, itv->card_name); /* card type */
+ strncpy(vcap->card, itv->card_name,
+ sizeof(vcap->card)-1); /* card type */
strcpy(vcap->bus_info, pci_name(itv->dev)); /* bus info... */
vcap->version = IVTV_DRIVER_VERSION; /* version */
vcap->capabilities = itv->v4l2_cap; /* capabilities */