Fix invalid line stride computation causing OOB array accesses

Fixes image-rs#125
kstrafe · Dec 9, 2019 · 5abf125 · 5abf125
1 parent a41aef8
commit 5abf125
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diff --git a/src/decoder.rs b/src/decoder.rs
@@ -785,7 +785,7 @@ fn compute_image(components: &[Component],
         let height = component.size.height as usize;
 
         let mut buffer = vec![0u8; width * height];
-        let line_stride = width * component.dct_scale;
+        let line_stride = component.block_size.width as usize * component.dct_scale;
 
         for y in 0 .. width {
             for x in 0 .. height {

diff --git a/tests/crashtest/images/single_chan.jpg b/tests/crashtest/images/single_chan.jpg