Howdy, ClusterFuzz has picked up this ICC PDF bug. Could you take a look please?

my msan build cannot detect it. valgrind can detect it, though.

well, valgrind detected Invalid read of size 4 at TetrahedralInterpFloat(), which is dup to https://bugs.chromium.org/p/chromium/issues/detail?id=665054.
In order words, I cannot reproduce this Use-of-uninitialized-value issue.

dsinclair: Uh oh! This issue still open and hasn't been updated in the last 14 days. This is a serious vulnerability, and we want to ensure that there's progress. Could you please leave an update with the current status and any potential blockers?

If you're not the right owner for this issue, could you please remove yourself as soon as possible or help us find the right one?

If the issue is fixed or you can't reproduce it, please close the bug. If you've started working on a fix, please set the status to Started.

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For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Setting this to blocked on 665054 to see if it can be re-prod after that is fixed.

ClusterFuzz has detected this issue as fixed in range 439303:439328.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5199965636001792

Fuzzer: libfuzzer_pdf_codec_icc_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  EvalSegmentedFn
  cmsEvalToneCurveFloat
  EvaluateCurves
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=420535:420584
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=439303:439328

Minimized Testcase (0.40 Kb): https://cluster-fuzz.appspot.com/download/AMIfv955f0M7-LEe-Lv7_Vz941e2uRvauzcic-Yp5w0_jJo5U29nqJSeDKmSv0z-D5zTHlTflS3sSZaDItx9e2vw_W8T5BpNE7jle5MIbfoJdfuUUutJW0W296O0W5rX4cyc2OdfedbSEy2-EN1cJXI4O3bvPHDtZQ?testcase_id=5199965636001792

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase 5199965636001792 is verified as fixed, so closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

Requesting merge of 665054 instead.

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot