kcwu: another fclamp uninitialized value usage for you. :)

This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

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kcwu: 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.

Thanks for your time! To disable nags, add the Disable-Nags label.

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

kcwu: Uh oh! This issue still open and hasn't been updated in the last 28 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.

Thanks for your time! To disable nags, add the Disable-Nags label.

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

A friendly reminder that M57 Beta launch is coming soon on February 2nd! Your bug is labelled as Beta ReleaseBlock, pls make sure to land the fix and get it merged into the release branch (2987) ASAP so it gets enough baking time in Dev (before Beta promotion). Thank you!

[Bulk edit]

A friendly reminder that M57 Beta launch is coming soon on February 2nd (in a week)! Your bug is labelled as Beta ReleaseBlock, pls make sure to land the fix and get it merged into the release branch (2987) ASAP so it gets enough baking time in Dev (before Beta promotion). Thank you!

A friendly reminder that M57 Stable is launch is coming soon! Your bug is labelled as Stable ReleaseBlock, pls make sure to land the fix and get it merged into the release branch ASAP so it gets enough baking time in Beta (before Stable promotion). Thank you!

Hi kcwu@ - are you best placed to look at this?  If not please re-assign.

A friendly reminder that M57 Stable is launch is coming VERY soon! Your bug is labelled as Stable ReleaseBlock, pls make sure to land the fix and get it merged into the release branch (2987) ASAP so it gets enough baking time in Beta (before Stable promotion). Thank you!

The issue is in pdfium? I don't think Kuang-che touched that code before. Kuang-che?

I don't have free time to help. Reassigned.

URGENT - PTAL ASAP.

We're getting VERY close to M57 Stable promotion. And 
this issue is marked as M57 stable release blocker. Pls make sure to land the fix and get it merged into the release branch ASAP so it gets enough baking time in Beta (before Stable promotion).

Know that this issue shouldn't block the release?  Remove the ReleaseBlock-Stable label or move to M58.

Thank you.

npm@ can you please take a look?

Looks like the fix for  issue 675617  will also fix this, but unable to confirm because for some reason I can't reproduce locally. Will rerun clusterfuzz once the fix has landed.

ClusterFuzz has detected this issue as fixed in range 452161:452203.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5752835670278144

Fuzzer: libfuzzer_pdf_codec_icc_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  fclamp
  BilinearInterpFloat
  _LUTevalFloat
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=430492:430537
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=452161:452203

Reproducer Testcase: https://cluster-fuzz.appspot.com/download/AMIfv94fWRyTWsoj4K_8tQyQ-s1Ej7oh90y-aBLmEaNDthh0mvUmdREMJmKIfPwX5gDCxUJquQhkak4GMqg62peFW85BkguNdwHcOXLZELpy68GEUWNqlt37tNSTa_H3vLWleYpjDD8TL8tybgCwMqOBIBbK4Ww2rhChHrau6qnz1_ZeNllOcSVaHtDLSk64TNn9UMGRernk4lNRM2R9f1USKpZggWjivJSjAEuz81C9VKPOZDG3E8I1jccvP5GKdhRsSOarChuqv3FMFVji3nB2BYGA6lmV9nf5IxvUwDqFViHkJkiUhILu067-GaxG1BV_uFOWAUdCPiV_uFL_SAPYfoel8ssmPSl-Ys-iVALvJTsPQl-HO54?testcase_id=5752835670278144


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 5752835670278144 is verified as fixed, so closing issue.

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

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