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Issue metadata

Status: Verified
Owner: ----
Closed: Jan 2017
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug-Security



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Use-of-uninitialized-value in v8::internal::interpreter::BytecodeRegisterOptimizer::RegisterTransfer

Project Member Reported by ClusterFuzz, Jan 13 2017

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4644371816513536

Fuzzer: mbarbella_js_mutation
Job Type: linux_msan_d8
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  v8::internal::interpreter::BytecodeRegisterOptimizer::RegisterTransfer
  v8::internal::interpreter::BytecodeArrayBuilder::StoreAccumulatorInRegister
  v8::internal::interpreter::BytecodeGenerator::BuildVariableAssignment
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_d8&range=435933:436006

Minimized Testcase (0.08 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv97JJDXdf--OU3UyoKdRJe8o3NGmQ2q_hJtWXdVH1eXAGRCC1urNE2b_-Lm-1KvZOjZmIbCWlToyHFc0RE6-USqKYlRxYaLp6nxO06n-24gh4srOsPlq_G7g0x8O6h-5Y305rmCXbQ4mu4kxZAh0xchOKj85yO0sTHIrhiyw6DedZ2QPyVlq1zF_-MSiZupEzl39SQNkbQdeOwnGTuJJeyvMNOMCbmcOhEvwHHY1VALiZzQrdaeD5K5knwegVa4DoPfiyl6r9MHsJKGOlkEgHZ0OvV86aZZn7aEz8Ois_o4iGfTUo6UcLCjdH5fbt3MRZQxcAM6efRDM73M_Vra5dk4gC4YwgCl_F9aMEVOZml0haZ_yNZnHb8St_Kvg5xqApG0i0JJmgWI-ZykJuqfzrkdrafebeA?testcase_id=4644371816513536
try {
for (var __v_1 of __v_0) {
}
((e = ({} = {} = {})) => {})()
} catch(e) {; }


Issue filed automatically.

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.
 
Project Member

Comment 1 by ClusterFuzz, Jan 13 2017

ClusterFuzz has detected this issue as fixed in range 443393:443475.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4644371816513536

Fuzzer: mbarbella_js_mutation
Job Type: linux_msan_d8
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  v8::internal::interpreter::BytecodeRegisterOptimizer::RegisterTransfer
  v8::internal::interpreter::BytecodeArrayBuilder::StoreAccumulatorInRegister
  v8::internal::interpreter::BytecodeGenerator::BuildVariableAssignment
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_d8&range=435933:436006
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_d8&range=443393:443475

Minimized Testcase (0.08 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv97JJDXdf--OU3UyoKdRJe8o3NGmQ2q_hJtWXdVH1eXAGRCC1urNE2b_-Lm-1KvZOjZmIbCWlToyHFc0RE6-USqKYlRxYaLp6nxO06n-24gh4srOsPlq_G7g0x8O6h-5Y305rmCXbQ4mu4kxZAh0xchOKj85yO0sTHIrhiyw6DedZ2QPyVlq1zF_-MSiZupEzl39SQNkbQdeOwnGTuJJeyvMNOMCbmcOhEvwHHY1VALiZzQrdaeD5K5knwegVa4DoPfiyl6r9MHsJKGOlkEgHZ0OvV86aZZn7aEz8Ois_o4iGfTUo6UcLCjdH5fbt3MRZQxcAM6efRDM73M_Vra5dk4gC4YwgCl_F9aMEVOZml0haZ_yNZnHb8St_Kvg5xqApG0i0JJmgWI-ZykJuqfzrkdrafebeA?testcase_id=4644371816513536
try {
for (var __v_1 of __v_0) {
}
((e = ({} = {} = {})) => {})()
} catch(e) {; }


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 2 by ClusterFuzz, Jan 13 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 4644371816513536 is verified as fixed, so closing issue.

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

Comment 3 by sheriffbot@chromium.org, Jan 13 2017

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

Comment 4 by sheriffbot@chromium.org, Apr 21 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
Project Member

Comment 5 by sheriffbot@chromium.org, Jul 28

Labels: Pri-1

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