Integer-overflow in CFX_Font::GetGlyphWidth |
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Issue descriptionDetailed report: https://clusterfuzz.com/testcase?key=4904556625657856 Fuzzer: libFuzzer_pdf_font_fuzzer Job Type: libfuzzer_chrome_ubsan Platform Id: linux Crash Type: Integer-overflow Crash Address: Crash State: CFX_Font::GetGlyphWidth LoadCompositeFont FPDFText_LoadFont Sanitizer: undefined (UBSAN) Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=500968:501035 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4904556625657856 Issue filed automatically. See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
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Oct 17 2017
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Oct 19 2017
The following revision refers to this bug: https://pdfium.googlesource.com/pdfium/+/943360187bb881fe94f14571c955e03f81203573 commit 943360187bb881fe94f14571c955e03f81203573 Author: Henrique Nakashima <hnakashima@chromium.org> Date: Thu Oct 19 17:22:05 2017 Fix integer overflows in cfx_font.cpp. Bug: chromium:775587 Change-Id: If927ebc0080a53d1c67f0aee5cab525fbcc24260 Reviewed-on: https://pdfium-review.googlesource.com/16290 Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> [modify] https://crrev.com/943360187bb881fe94f14571c955e03f81203573/core/fxge/cfx_font.cpp
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Oct 19 2017
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Oct 20 2017
ClusterFuzz has detected this issue as fixed in range 510151:510189. Detailed report: https://clusterfuzz.com/testcase?key=4904556625657856 Fuzzer: libFuzzer_pdf_font_fuzzer Job Type: libfuzzer_chrome_ubsan Platform Id: linux Crash Type: Integer-overflow Crash Address: Crash State: CFX_Font::GetGlyphWidth LoadCompositeFont FPDFText_LoadFont Sanitizer: undefined (UBSAN) Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=500968:501035 Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=510151:510189 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4904556625657856 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.
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Oct 20 2017
ClusterFuzz testcase 4904556625657856 is verified as fixed, so closing issue as verified. If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
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Nov 7 2017
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Comment 1 by ClusterFuzz
, Oct 17 2017Labels: Test-Predator-AutoComponents