New issue
Advanced search Search tips

Issue 856967 link

Starred by 1 user

Issue metadata

Status: Fixed
Owner:
Closed: Jul 30
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows
Pri: 2
Type: Bug-Security



Sign in to add a comment

Crash in getAddress

Project Member Reported by ClusterFuzz, Jun 27 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6014962334695424

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x62d00005e418
Crash State:
  getAddress
  sw::Array<sw::Float4, 1>::operator
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=521502:521564

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6014962334695424

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Jun 27 2018

Components: Internals>GPU>SwiftShader
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Project Member

Comment 2 by sheriffbot@chromium.org, Jun 27 2018

Labels: M-68 Target-68
Project Member

Comment 3 by sheriffbot@chromium.org, Jun 27 2018

Labels: Pri-1
Owner: capn@chromium.org
Status: Assigned (was: Untriaged)

Comment 5 by capn@chromium.org, Jun 27 2018

Labels: -Pri-1 OS-Windows Pri-2
The shader contains an array of 32769 elements, which is a lot more than our limit of 4096 temporary registers, which we check for since April: https://swiftshader-review.googlesource.com/18388. The regression range is from December last year, and last tested version from March. So this might not reproduce. Either way it doesn't appear that this can be used for targeted memory access, so lowering the priority.

Comment 6 by capn@chromium.org, Jun 29 2018

Cc: mmoroz@chromium.org
Labels: ClusterFuzz-Wrong
ClusterFuzz appears to be stuck and hasn't tested any recent revisions.
Sorry about this, this is a recent issue with ClusterFuzz and should go away with https://bugs.chromium.org/p/chromium/issues/detail?id=856906. Also, this bug should get autoclosed soon.
Project Member

Comment 8 by ClusterFuzz, Jul 1

ClusterFuzz has detected this issue as fixed in range 552045:552055.

Detailed report: https://clusterfuzz.com/testcase?key=6014962334695424

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x62d00005e418
Crash State:
  getAddress
  sw::Array<sw::Float4, 1>::operator
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=521502:521564
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=552045:552055

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6014962334695424

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.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 9 by sheriffbot@chromium.org, Jul 14

capn: 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
Project Member

Comment 10 by ClusterFuzz, Jul 25

ClusterFuzz has detected this issue as fixed in range 552045:552055.

Detailed report: https://clusterfuzz.com/testcase?key=6014962334695424

Fuzzer: libFuzzer_swiftshader_vertex_routine_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x62d00005e418
Crash State:
  getAddress
  sw::Array<sw::Float4, 1>::operator
  
Sanitizer: address (ASAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=521502:521564
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=552045:552055

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6014962334695424

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.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 11 by sheriffbot@chromium.org, Jul 29

capn: Uh oh! This issue still open and hasn't been updated in the last 29 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
Cc: sugoi@chromium.org infe...@chromium.org
Status: Fixed (was: Assigned)
@inferno, it looks like this hasn't autoclosed yet as mentioned in #7.

Anyway, no big deal. I think this was the actual fix: https://swiftshader.googlesource.com/SwiftShader/+/329747ca1c0fc80010ac55f2fa41c22d3c56c1a0
Project Member

Comment 13 by sheriffbot@chromium.org, Jul 31

Labels: -Restrict-View-SecurityTeam Restrict-View-SecurityNotify
Project Member

Comment 14 by sheriffbot@chromium.org, Nov 6

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

Sign in to add a comment