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Issue 736146 link

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Issue metadata

Status: Duplicate
Merged: issue 736133
Owner:
Last visit > 30 days ago
Closed: Jun 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug-Security

Blocking:
issue pdfium:11



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Heap-use-after-free in CFX_UnownedPtr<SkTypeface>::ProbeForLowSeverityLifetimeIssue

Project Member Reported by ClusterFuzz, Jun 23 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6184648739913728

Fuzzer: libFuzzer_pdfium_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-use-after-free READ 1
Crash Address: 0x60800000ffa0
Crash State:
  CFX_UnownedPtr<SkTypeface>::ProbeForLowSeverityLifetimeIssue
  CFX_FaceCache::~CFX_FaceCache
  CFX_FontCache::CountedFaceCache::~CountedFaceCache
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=481514:481576

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6184648739913728


Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Cc: thestig@chromium.org
Components: Internals>Plugins>PDF
Owner: dsinclair@chromium.org
Status: Assigned (was: Untriaged)
Another PDFium clusterfuzz'd bug for you. :)
Blocking: pdfium:11
Labels: -Security_Severity-High Security_Severity-Low Pri-3
We may flip Skia off again in the near future.
Project Member

Comment 3 by sheriffbot@chromium.org, Jun 23 2017

Labels: -Pri-3 Pri-2
Cc: dsinclair@chromium.org
Owner: caryclark@chromium.org
Project Member

Comment 5 by ClusterFuzz, Jun 28 2017

ClusterFuzz has detected this issue as fixed in range 481576:482713.

Detailed report: https://clusterfuzz.com/testcase?key=6184648739913728

Fuzzer: libFuzzer_pdfium_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-use-after-free READ 1
Crash Address: 0x60800000ffa0
Crash State:
  CFX_UnownedPtr<SkTypeface>::ProbeForLowSeverityLifetimeIssue
  CFX_FaceCache::~CFX_FaceCache
  CFX_FontCache::CountedFaceCache::~CountedFaceCache
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=481514:481576
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=481576:482713

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6184648739913728


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.
Project Member

Comment 6 by ClusterFuzz, Jun 28 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6184648739913728 is verified as fixed, so closing issue.

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

Comment 7 by sheriffbot@chromium.org, Jun 28 2017

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Labels: ClusterFuzz-Wrong
Status: Assigned (was: Verified)
Skia Paths were turned off.
Owner: caryclark@google.com
Mergedinto: 736133
Status: Duplicate (was: Assigned)
Labels: -ClusterFuzz-Wrong
Not a ClusterFuzz mistake if skia paths were turned off and on.
Project Member

Comment 12 by sheriffbot@chromium.org, Oct 18 2017

Labels: -Restrict-View-SecurityNotify allpublic
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

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