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media: vivid: use vfree() instead of kfree() for dev->bitmap_cap

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commit dad7e270ba upstream.

syzkaller reported crashes on kfree() called from
vivid_vid_cap_s_selection(). This looks like a simple typo, as
dev->bitmap_cap is allocated with vzalloc() throughout the file.

Fixes: ef834f7836 ("[media] vivid: add the video capture and output
parts")

Signed-off-by: Alexander Potapenko <glider@google.com>
Reported-by: Syzbot <syzbot+6c0effb5877f6b0344e2@syzkaller.appspotmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Potapenko
2019-04-04 10:56:46 -04:00
committed by Greg Kroah-Hartman
parent 0595e0d173
commit c8275cbe2b
1 changed files with 1 additions and 1 deletions
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2
drivers/media/platform/vivid/vivid-vid-cap.c
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@@ -992,7 +992,7 @@ int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection
v4l2_rect_map_inside(&s->r, &dev->fmt_cap_rect);
if (dev->bitmap_cap && (compose->width != s->r.width ||
compose->height != s->r.height)) {
kfree(dev->bitmap_cap);
vfree(dev->bitmap_cap);
dev->bitmap_cap = NULL;
}
*compose = s->r;