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49 lines
2.2 KiB
Diff
49 lines
2.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Brian Osman <brianosman@google.com>
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Date: Tue, 27 Aug 2024 14:22:52 -0400
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Subject: [PATCH] RESTRICT AUTOMERGE: Avoid potential overflow when allocating
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3D mask from emboss filter
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Note: the original fix landed after
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Iac8b937e516dbfbbcefef54360dd5b7300bacb67 introduced SkMaskBuilder, so
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this cherry-pick had to be tweaked to avoid conflicts. Unfortuantely
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that means we need RESTRICT AUTOMERGE to prevent this modified version
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from flowing through API boundaries into VIC, and we need to manually
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cherry-pick it to each API level.
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Bug: 344620577
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Test: N/A -- unclear if even reachable
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Reviewed-on: https://skia-review.googlesource.com/c/skia/+/893738
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Commit-Queue: Brian Osman <brianosman@google.com>
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Reviewed-by: Ben Wagner <bungeman@google.com>
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(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:2bc38734eec777bf2574d4b38a7fd4fc05f0ecde)
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(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:69fc79acf3f05f269c55069ba5e2fbd00e1a76b6)
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Merged-In: Ia35860371d45120baca63238e77faa5c0eb25d51
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Change-Id: Ia35860371d45120baca63238e77faa5c0eb25d51
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---
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src/effects/SkEmbossMaskFilter.cpp | 10 ++++++----
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1 file changed, 6 insertions(+), 4 deletions(-)
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diff --git a/src/effects/SkEmbossMaskFilter.cpp b/src/effects/SkEmbossMaskFilter.cpp
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index 2dcce2b910..8ea8c08039 100644
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--- a/src/effects/SkEmbossMaskFilter.cpp
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+++ b/src/effects/SkEmbossMaskFilter.cpp
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@@ -95,11 +95,13 @@ bool SkEmbossMaskFilter::filterMask(SkMask* dst, const SkMask& src,
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{
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uint8_t* alphaPlane = dst->fImage;
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- size_t planeSize = dst->computeImageSize();
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- if (0 == planeSize) {
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- return false; // too big to allocate, abort
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+ size_t totalSize = dst->computeTotalImageSize();
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+ if (totalSize == 0) {
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+ return false; // too big to allocate, abort
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}
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- dst->fImage = SkMask::AllocImage(planeSize * 3);
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+ size_t planeSize = dst->computeImageSize();
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+ SkASSERT(planeSize != 0); // if totalSize didn't overflow, this can't either
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+ dst->fImage = SkMask::AllocImage(totalSize);
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memcpy(dst->fImage, alphaPlane, planeSize);
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SkMask::FreeImage(alphaPlane);
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}
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