fuzz: weekly regression seeds (2026-05-10)

[lilith]

Summary

Weekly fuzz sweep 2026-05-10: all 12 targets ran for 600 s each. One new crash found and seeded.

• 1 new regression seed added to fuzz/regression/
• cargo test --all-features --test fuzz_regression passes

New Seeds

File	Target	Size	Bug
limits_boundaries-crash-36a0851d8893	limits_boundaries	80 bytes	OOM: WebPAllocateDecBuffer attempts ~17 GB allocation with crafted dimensions; ASAN RSS limit triggers

Note: This OOM only fires under ASAN's memory limit (fuzzing context). The fuzz_regression harness has no run_limits_boundaries helper, so the seed passes cargo test without a fix — same situation as the prior seed limits_boundaries-crash-9947b87f07e9 (see PR #7). The seed is recorded to track the input; a separate fix to Limits enforcement is the follow-up.

Sweep Stats

Target	Execs	Cov	Exec/s	Crashes
decode_animation	901,597	172	1,500	0
decode_into	1,003,348	190	1,669	0
decode_static	538,712	185	896	0
decode_streaming	5,410,276	239	9,002	0
decoder_builder	561,379	340	934	0
dim_extremes	2,509,750	284	4,175	0
encode_roundtrip	357,871	365	595	0
image_info	309,783,981	41	515,447	0
limits_boundaries	33,700	343	16,850	1
mux_metadata	50,885,353	130	84,667	0
stride_extremes	3,844,229	379	6,413	0
yuv_planes	22,920,215	253	38,136	0

limits_boundaries ran only ~2 s before crashing on an existing corpus seed; the 33,700-exec count reflects that short run. All other targets completed the full 600 s window.

https://claude.ai/code/session_01TtcdYQzUSAE9ZVT6sNXfAT

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Generated by Claude Code

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.85%. Comparing base (842fc5e) to head (7ebe886).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #10   +/-   ##
=======================================
  Coverage   78.85%   78.85%           
=======================================
  Files          18       18           
  Lines        4460     4460           
=======================================
  Hits         3517     3517           
  Misses        943      943           

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