diff options
Diffstat (limited to 'source/fitz')
| -rw-r--r-- | source/fitz/image.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/source/fitz/image.c b/source/fitz/image.c index bfafdcd4..1e6a1183 100644 --- a/source/fitz/image.c +++ b/source/fitz/image.c @@ -281,9 +281,10 @@ fz_image_get_pixmap(fz_context *ctx, fz_image *image, int w, int h) case FZ_IMAGE_JPEG: /* Scan JPEG stream and patch missing height values in header */ { - unsigned char *d = image->buffer->buffer->data; - unsigned char *e = d + image->buffer->buffer->len; - for (d += 2; d + 9 < e && d[0] == 0xFF; d += (d[2] << 8 | d[3]) + 2) + unsigned char *s = image->buffer->buffer->data; + unsigned char *e = s + image->buffer->buffer->len; + unsigned char *d; + for (d = s + 2; s < d && d < e - 9 && d[0] == 0xFF; d += (d[2] << 8 | d[3]) + 2) { if (d[1] < 0xC0 || (0xC3 < d[1] && d[1] < 0xC9) || 0xCB < d[1]) continue; |