Fix Heap-buffer-overflow READ in opj_jp2_apply_pclr #23067
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47342 The read overflow triggered by reading `src[j]` in ```cpp for (j = 0; j < max; ++j) { dst[j] = src[j]; } ``` The max is calculated as `new_comps[pcol].w * new_comps[pcol].h`, however the `src = old_comps[cmp].data;` which may have different `w` and `h` dimensions.
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Logs are not available so I cannot see why some checks have failed. But I doubt that it is related. |
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Re-run triggered 15 hours ago. Some jobs succeeded. Some didn't even start, waiting for runner. Hanging? |
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Is it good to be merged? |
alalek
approved these changes
Feb 5, 2023
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47342
The read overflow triggered by reading
src[j]inThe max is calculated as
new_comps[pcol].w * new_comps[pcol].h, however thesrc = old_comps[cmp].data;which may have differentwandhdimensions.The patch was contributed to the third party library openjpeg uclouvain/openjpeg#1441
Normally I would suggest to update to openjpeg 2.5.1 when released, but there was no release in 4 months and from security point of view I suggest to make the hot fix for now and bump the version when available. The tracking issue was created - #23066
Pull Request Readiness Checklist
See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request
Patch to opencv_extra has the same branch name.