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Issue 880243 link

Starred by 1 user

Issue metadata

Status: Verified
Owner:
Last visit > 30 days ago
Closed: Sep 26
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Heap-use-after-free in base::sequence_manager::ThreadManager::PostDelayedTask

Project Member Reported by ClusterFuzz, Sep 4

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4739826589630464

Fuzzer: libFuzzer_sequence_manager_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-use-after-free READ 8
Crash Address: 0x60b00002c460
Crash State:
  base::sequence_manager::ThreadManager::PostDelayedTask
  base::sequence_manager::ThreadManager::ExecuteThread
  base::sequence_manager::ThreadPoolManager::StartThread
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=586733:586756

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4739826589630464

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Sep 4

Components: Blink>Scheduling Internals>Core
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 ClusterFuzz, Sep 4

Cc: farahcharab@google.com
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

SQM Fuzzer: Add support for cross-thread posting. by farahcharab@google.com - https://chromium.googlesource.com/chromium/src/+/f67097b4acac3a85de15f259ee38295da301802e

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.
Project Member

Comment 3 by sheriffbot@chromium.org, Sep 4

Labels: Target-70 M-70
Project Member

Comment 4 by sheriffbot@chromium.org, Sep 4

Labels: ReleaseBlock-Stable
This is a serious security regression. If you are not able to fix this quickly, please revert the change that introduced it.

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

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

Comment 5 by sheriffbot@chromium.org, Sep 4

Labels: Pri-1
Project Member

Comment 6 by sheriffbot@chromium.org, Sep 5

Labels: -Security_Impact-Head Security_Impact-Beta
Cc: -farahcharab@google.com farahcharab@chromium.org
Owner: farahcharab@chromium.org
Status: Assigned (was: Untriaged)
Probably the same bug as  issue 879847 .
Cc: skyos...@chromium.org altimin@chromium.org alexclarke@chromium.org
Project Member

Comment 9 by sheriffbot@chromium.org, Sep 18

farahcharab: 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
Labels: -Pri-1 -ReleaseBlock-Stable Pri-2
This is a bug in the fuzzer not chromium, hence removing RB-Stable.
Project Member

Comment 11 by sheriffbot@chromium.org, Sep 18

Labels: ReleaseBlock-Stable
This is a serious security regression. If you are not able to fix this quickly, please revert the change that introduced it.

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
Labels: -Security_Severity-High -Security_Impact-Beta -ReleaseBlock-Stable
Bad bot...
Labels: -Type-Bug-Security -Restrict-View-SecurityTeam Type-Bug
Project Member

Comment 14 by ClusterFuzz, Sep 26

ClusterFuzz has detected this issue as fixed in range 593914:593915.

Detailed report: https://clusterfuzz.com/testcase?key=4739826589630464

Fuzzer: libFuzzer_sequence_manager_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Heap-use-after-free READ 8
Crash Address: 0x60b00002c460
Crash State:
  base::sequence_manager::ThreadManager::PostDelayedTask
  base::sequence_manager::ThreadManager::ExecuteThread
  base::sequence_manager::ThreadPoolManager::StartThread
  
Sanitizer: address (ASAN)

Recommended Security Severity: High

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=586733:586756
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=593914:593915

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4739826589630464

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 15 by ClusterFuzz, Sep 26

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 4739826589630464 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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