Fix unbounded buffer growth in aead_decrypt chunk reassembly#3023
Merged
Fix unbounded buffer growth in aead_decrypt chunk reassembly#3023
Conversation
The idx-tracking optimization in aead_decrypt skipped memmove when partial AEAD chunks spanned multiple calls, but never compacted the dead space before idx. This caused the chunk buffer to grow proportionally to total data transferred (~10 MB growth per 10 MB transferred), tripping the stress test memory leak threshold. Compact residual data to the front when appending new ciphertext, keeping the buffer bounded to the size of the residual plus new data. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
aead_decrypt(from 31731ba) skippedmemmovewhen partial AEAD chunks spanned multiple calls, but never compacted the dead space beforeidxServer RSS before/after (10 MB transfer):
Test plan
ctest --output-on-failure)python3 tests/stress_test.py --bin build/shared/bin/ --size 10)🤖 Generated with Claude Code