WebAudio heap-buffer-overflow crash [@mozilla::AudioBlockSumOfSquares]

RESOLVED FIXED in Firefox 24

Status

()

Core
Web Audio
--
critical
RESOLVED FIXED
5 years ago
4 years ago

People

(Reporter: posidron, Assigned: Away for a while)

Tracking

(Blocks: 1 bug, 4 keywords)

Trunk
mozilla24
x86_64
Mac OS X
crash, csectype-bounds, sec-critical, testcase
Points:
---
Dependency tree / graph
Bug Flags:
in-testsuite +

Firefox Tracking Flags

(firefox23 unaffected, firefox24+ fixed, firefox-esr17 unaffected, b2g18 unaffected)

Details

(Whiteboard: [adv-main24-])

Attachments

(3 attachments)

(Reporter)

Description

5 years ago
Created attachment 759252 [details]
testcase

A reduced testcase will follow in the next comment.

content/media/AudioNodeEngine.cpp:158

    float
    AudioBlockSumOfSquares(const float* aInput, uint32_t aLength)
    {
      float sum = 0.0f;
      while (aLength--) {
*       sum += *aInput * *aInput;
        ++aInput;
      }
      return sum;
    }

Tested with http://hg.mozilla.org/integration/mozilla-inbound/rev/2551c645b782 + ehsan's patch for the Convolver node.
(Reporter)

Comment 1

5 years ago
Created attachment 759253 [details]
callstack
(Reporter)

Comment 2

5 years ago
Created attachment 759262 [details]
testcase-reduced

reduced testcase
Does this affect Aurora? This is disabled in Beta, right?
status-firefox24: --- → affected
tracking-firefox24: --- → +
(Assignee)

Comment 4

5 years ago
Can you please test without my patch as well?
Flags: needinfo?(cdiehl)
(Assignee)

Comment 5

5 years ago
(In reply to Al Billings [:abillings] from comment #3)
> Does this affect Aurora? This is disabled in Beta, right?

This is with the patch to bug 815643 which has not landed yet...
(Assignee)

Comment 6

5 years ago
Fixed locally, and landed the test case: https://hg.mozilla.org/integration/mozilla-inbound/rev/a178af222dd4
Assignee: nobody → ehsan
Flags: needinfo?(cdiehl)
(Reporter)

Comment 7

5 years ago
Tested it again with Ehsan's updated patch https://gist.github.com/ehsan/5730140 and the testcase is not reproducible anymore. Fixed.
Status: NEW → RESOLVED
Last Resolved: 5 years ago
Resolution: --- → FIXED
https://hg.mozilla.org/mozilla-central/rev/a178af222dd4
status-firefox24: affected → fixed
Flags: in-testsuite+
Target Milestone: --- → mozilla24
status-firefox23: --- → unaffected
status-firefox-esr17: --- → unaffected
Whiteboard: [adv-main24-]
status-b2g18: --- → unaffected
Group: core-security
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