Looks pretty similar to  bug 610644 , but pdfium part of the stacktrace differs.

bungeman@, could you take a look? It looks quite similar to  bug 610644 .
Please feel free to reassign. Thanks! 

bungeman: 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

bungeman: 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

I can't reproduce this with:
1) up-to-date system FreeType on Ubuntu 14.04
2) PDFium's bundled FreeType.

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

ClusterFuzz has detected this issue as fixed in range 453200:453220.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4969006924824576

Fuzzer: attekett_surku_fuzzer
Job Type: linux_asan_chrome_mp
Platform Id: linux

Crash Type: Heap-buffer-overflow READ {*}
Crash Address: 0x61b00001bfc4
Crash State:
  ps_table_add
  parse_encoding
  parse_dict
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_mp&range=314095:314100
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_mp&range=453200:453220

Reproducer Testcase: https://cluster-fuzz.appspot.com/download/AMIfv94_jAfYfnHofFs23mihTjP7HjB9t5JStlCtda5V4ogq2aBoMdnKvqho-XEWfdgP90Qy8nf3KxArb1yM-3VwquLIFP0zxgWDAtjgp3pvBm4JA-G2Qb8xml_Ek7jY5aA8cfVCBbpqasvneTFSuYxfuGb0AatIRcLdXrBH-9Z08uYqd7GYwgI?testcase_id=4969006924824576


See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

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

ClusterFuzz has detected this issue as fixed in range 453200:453220.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4969006924824576

Fuzzer: attekett_surku_fuzzer
Job Type: linux_asan_chrome_mp
Platform Id: linux

Crash Type: Heap-buffer-overflow READ {*}
Crash Address: 0x61b00001bfc4
Crash State:
  ps_table_add
  parse_encoding
  parse_dict
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_mp&range=314095:314100
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_mp&range=453200:453220

Reproducer Testcase: https://cluster-fuzz.appspot.com/download/AMIfv94_jAfYfnHofFs23mihTjP7HjB9t5JStlCtda5V4ogq2aBoMdnKvqho-XEWfdgP90Qy8nf3KxArb1yM-3VwquLIFP0zxgWDAtjgp3pvBm4JA-G2Qb8xml_Ek7jY5aA8cfVCBbpqasvneTFSuYxfuGb0AatIRcLdXrBH-9Z08uYqd7GYwgI?testcase_id=4969006924824576


See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

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