Hi kcwu@, I see you've investigated a similar-looking bug in  issue 654676 , mind taking a look at this one? Thanks!

This seems already fixed as  issue 654676 . Anyway, I have asked clusterfuzz try again. Let's wait and see the retry results.

ClusterFuzz has detected this issue as fixed in range 430405:430945.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6067656093597696

Fuzzer: libfuzzer_pdf_codec_icc_fuzzer
Job Type: mac_libfuzzer_chrome_asan
Platform Id: mac

Crash Type: Heap-buffer-overflow READ 4
Crash Address: 0x606e000041c0
Crash State:
  LinLerp1Dfloat
  _LUTevalFloat
  XFormSampler16
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=mac_libfuzzer_chrome_asan&range=420575:420576
Fixed: https://cluster-fuzz.appspot.com/revisions?job=mac_libfuzzer_chrome_asan&range=430405:430945

Minimized Testcase (0.24 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95kXNxMBTh8tpehlMmdksNJ_LADTM_Z6Zfr_M3MLdyFDG31_n9EbI8C3jeMROFWnm1KnIbwGh9DoEhX60seQ_9wuZh-KITas6ic5YZrYUb65gQk1YDjkW5V2T1RDRuh4EMBayiILOuzkmTpzQyqrXcKveRPHA?testcase_id=6067656093597696

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.

Sweet, looks fixed, thanks!

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