1723340 - Windows 7, EMET 5.52 crashes Firefox

Status: UNCONFIRMED

(External Software Affecting Firefox :: Other, defect, P3)

Description

[Yves Bellefeuille]

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

Windows 7 64-bit Enterprise, with all updates. French interface.

Firefox 90.0.2 64 bit French, with all default options.

uBlock Origin 1.37.2, with default options. Filters for French-language websites disabled. It seems relevant that uBlock Origin is installed. No other extensions.

Microsoft EMET 5.52.6156.38091

Actual results:

I've had many crashes, and if I understand the crashes report correctly, EMET is to blame:

https://crash-stats.mozilla.org/report/index/77f1e73a-9089-4918-809b-b2cba0210801#tab-modules

https://crash-stats.mozilla.org/report/index/478e5a14-447a-4c6e-8dcc-184190210801#tab-modules

https://crash-stats.mozilla.org/report/index/c7069e78-6ab8-4a7d-b830-0aa080210801#tab-modules

https://crash-stats.mozilla.org/report/index/3235e21a-a916-41a2-b80b-36ebd0210801#tab-modules

https://crash-stats.mozilla.org/report/index/73face82-b66c-4a9c-81b3-03c3a0210801#tab-modules

Expected results:

No crashes, please.

Comment 1

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Win32' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Gian-Carlo Pascutto [:gcp]]

This is probably a better component.

Comment 3

[Gian-Carlo Pascutto [:gcp]]

Some of these crashes are in basic Windows system calls like GetSystemTime which don't look like anything we could possibly fix. Is it possible some wrong EMET option is enabled or something?

FYI: https://support.mozilla.org/en-US/kb/compatibility-exploit-protection-windows-10

Were the defaults changed?

Comment 4

[BugBot [:suhaib / :marco]]

Clear a needinfo that is pending on an inactive user.

Inactive users most likely will not respond; if the missing information is essential and cannot be collected another way, the bug maybe should be closed as INCOMPLETE.

For more information, please visit auto_nag documentation.

Comment 5

[Yves Bellefeuille]

I'm no longer using Windows 7. I can no longer check.