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Issue metadata

Status: Fixed
Owner:
Closed: Oct 2016
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Crash in blink::ComputedStyle::font

Project Member Reported by ClusterFuzz, Oct 24 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5333309796384768

Fuzzer: inferno_twister
Job Type: linux_asan_chrome_chromeos
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000040
Crash State:
  blink::ComputedStyle::font
  blink::SVGLengthContext::convertValueFromEXSToUserUnits
  blink::SVGLengthContext::convertValueToUserUnits
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_chromeos&range=425398:425442

Minimized Testcase (7.52 Kb): https://cluster-fuzz.appspot.com/download/AMIfv947TjdEUI3sIhbSwr1zv3gpVzNv4S1FHM311_7kF8yksBNVxrpBFNUtPxJARNT2yeAzabedBbYO8gannxyCmd0q6R9Buxib25JhsaXw0eRO5xqG03or1U6_v-pP-G2LDEw3mS1KVhajZpDu_OTVoJ6AkdCflA?testcase_id=5333309796384768

Issue filed automatically.

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
 
Components: Blink>SVG
Labels: M-56 Te-Logged
Owner: e...@chromium.org
Status: Assigned (was: Untriaged)
Author: eae
Project: chromium
Changelist: https://chromium.googlesource.com/chromium/src/+/fdcbab80bc37108f6e03d6906f27831228690350
Time: Fri Oct 14 19:47:55 2016
Lines 417-418, 425 of file SVGLengthContext.cpp which potentially caused crash are changed in this cl (frame #4, "blink::SVGLengthContext::convertValueFromEXSToUserUnits").

File ComputedStyle.cpp is changed in this cl (and is part of stack frame #3, "blink::ComputedStyle::font")
Minimum distance from crash line to modified line: 0. (file: SVGLengthContext.cpp, crashed on: 417, modified: 417).

Suspected Project: chromium
Suspected Component: Blink>SVG

Comment 2 by e...@chromium.org, Oct 24 2016

Status: Fixed (was: Assigned)
Fix has already landed, r427080.
Project Member

Comment 3 by ClusterFuzz, Oct 25 2016

ClusterFuzz has detected this issue as fixed in range 427006:427174.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5333309796384768

Fuzzer: inferno_twister
Job Type: linux_asan_chrome_chromeos
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000040
Crash State:
  blink::ComputedStyle::font
  blink::SVGLengthContext::convertValueFromEXSToUserUnits
  blink::SVGLengthContext::convertValueToUserUnits
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_chromeos&range=425398:425442
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_chromeos&range=427006:427174

Minimized Testcase (7.52 Kb): https://cluster-fuzz.appspot.com/download/AMIfv947TjdEUI3sIhbSwr1zv3gpVzNv4S1FHM311_7kF8yksBNVxrpBFNUtPxJARNT2yeAzabedBbYO8gannxyCmd0q6R9Buxib25JhsaXw0eRO5xqG03or1U6_v-pP-G2LDEw3mS1KVhajZpDu_OTVoJ6AkdCflA?testcase_id=5333309796384768

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.
Project Member

Comment 4 by sheriffbot@chromium.org, Nov 22 2016

Labels: -Restrict-View-EditIssue
Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

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

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