Looks very similar to 666892. Should check after that is fixed.

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Assigning to npm@ to take a look after they've fixed the other bug.

ClusterFuzz has detected this issue as fixed in range 453958:453992.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5303547672657920

Fuzzer: libfuzzer_pdf_jpx_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  opj_tcd_dc_level_shift_decode
  opj_tcd_decode_tile
  opj_j2k_decode_tile
  
Sanitizer: undefined (UBSAN)

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=395640:395746
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=453958:453992

Reproducer Testcase: https://cluster-fuzz.appspot.com/download/AMIfv96vB7qW6RvymOjOQDQeIvHdi6F8w_dvV1z-SxsGP8lFGcQhfJY2V1s4mPFIEfxNsQpxWlPGRXBg9FmLeYB2SFlmJkCNiURVS0VW9bd84HleqEYcDqsYn0ojiGqJ_KnjWPgSKc0xIsfu0Bvo0BIuezgq99BQR0B4kLkKKPIUaWEXRE0CL89uFxY1TnxaCzyHr-YHAGpGarPW8-y4w_3iC935ac7Isbkx724CwcV4HzoqLRhZXbYleigTwT3kGvWbxOIyRCN4FvUkY4B7nyMuZF_rgdxGYItpS-ceQq5VmGQ6XhII1NXkRnXBZ-sEgo6ZDlitMkJJgT54qeEsGMT2iz8lHr3-iXBX6i-cwSY0vNMe5Qr5WGY?testcase_id=5303547672657920


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 5303547672657920 is verified as fixed, so closing issue.

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