Closed Bug 690650 Opened 8 years ago Closed 8 years ago

TI: Crash [@ js_InternalInterpret] or "Assertion failure: codeArray[offset],"

Categories

(Core :: JavaScript Engine, defect, critical)

x86
macOS
defect
Not set
critical

Tracking

()

RESOLVED FIXED

People

(Reporter: gkw, Assigned: bhackett1024)

References

(Blocks 2 open bugs)

Details

(Keywords: assertion, crash, testcase, Whiteboard: [sg:dos] js-triage-needed)

Attachments

(3 files)

Attached file testcase
The attached testcase asserts js debug shell on JM changeset 44ef245b8706 and m-c changeset db9e99d537f2 with -m, -a and -n at Assertion failure: codeArray[offset], and crashes js opt shell at js_InternalInterpret

This was found using a combination of jsfunfuzz and jandem's method fuzzer.

Since it seems to be a null deref, assuming sg:dos and locking s-s to be safe.
Attached file stack
Attached patch patchSplinter Review
Use of GET_JUMP_OFFSET which did not watch for JOF_JUMPX opcodes.  No other suspicious uses of GET_JUMP_OFFSET in analysis/compilation code, though I'd kind of like to kill GET_JUMP_OFFSET / GET_JUMP_OFFSETX completely and use a common function to compute offsets for both.
Assignee: general → bhackett1024
Attachment #565103 - Flags: review?(dvander)
Attachment #565103 - Flags: review?(dvander) → review+
https://hg.mozilla.org/mozilla-central/rev/cfda40f4a5c8
Status: NEW → RESOLVED
Closed: 8 years ago
Resolution: --- → FIXED
Group: core-security
Automatically extracted testcase for this bug was committed:

https://hg.mozilla.org/mozilla-central/rev/efaf8960a929
Flags: in-testsuite+
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