Fix issue accessing uninitialized memory in zrle.c#685
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mtrea wants to merge 1 commit intoLibVNC:masterfrom
Open
Fix issue accessing uninitialized memory in zrle.c#685mtrea wants to merge 1 commit intoLibVNC:masterfrom
mtrea wants to merge 1 commit intoLibVNC:masterfrom
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This replaces pointer casting in UncompressCPixel with memcpy to prevent reading uninitialized memory when REALBPP/8 is smaller than sizeof(CARDBPP). For example, this is important if REALBPP/8 was 3 bytes but sizeof(CARDBPP) was 4 bytes.
Member
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Does not pass CI, please rebuild. |
Author
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How can I do that? I'm having a little trouble figuring that out. |
Member
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This is where CI fails: https://github.com/LibVNC/libvncserver/actions/runs/20667505618/job/59342602753?pr=685 |
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This replaces pointer casting in UncompressCPixel with memcpy to prevent reading uninitialized memory when REALBPP/8 is smaller than sizeof(CARDBPP). For example, this is important if REALBPP/8 was 3 bytes but sizeof(CARDBPP) was 4 bytes.
I detected this issue and verified this fix with the help of https://github.com/google/sanitizers/wiki/memorysanitizer.