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Tasklist

FS#40912 - [paxd] firefox crash on linux-grsec with paxd

Attached to Project: Community Packages
Opened by miskoala (miskoala) - Friday, 20 June 2014, 09:33 GMT
Last edited by Daniel Micay (thestinger) - Monday, 21 July 2014, 00:54 GMT
Task Type Bug Report
Category Upstream Bugs
Status Closed
Assigned To Daniel Micay (thestinger)
Architecture All
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

firefox crash after some web surfing on linux-grsec with paxd enabled

one of websites where it will crash immediately: http://eurosport.pl

[ 846.180565] PAX: execution attempt in: <anonymous mapping>, 46a21000-46a2a000 46a21000
[ 846.180580] PAX: terminating task: /usr/lib/firefox/firefox(firefox):3396, uid/euid: 1000/1000, PC: 46a29838, SP: 5bdab924
[ 846.180587] PAX: bytes at PC: 81 ec 80 00 00 00 8b 84 24 94 00 00 00 83 f8 82 0f 85 5a 02
[ 846.180620] PAX: bytes at SP-4: 378bfe78 45b12a29 00000202 37785940 00000002 00000000 ffffff82 34a1fa70 ffffff85 34a2b1f0 ffffff87 5bdab9b0 361454c0 435856a8 00000581 34a2b1f0 ffffff87 34a1fa70 ffffff85 00000000 ffffff82


paxd 11-1
firefox 30.0-1
linux-grsec 3.14.8.201406191347-1
This task depends upon

Closed by  Daniel Micay (thestinger)
Monday, 21 July 2014, 00:54 GMT
Reason for closing:  Upstream
Comment by Daniel Micay (thestinger) - Saturday, 21 June 2014, 16:10 GMT
You can work around this by changing the exception in paxd.conf to `pems` from `em`. However, it shouldn't be necessary to do that. Providing information upstream would be helpful, there's already an open thread: https://forums.grsecurity.net/viewtopic.php?f=3&t=3980
Comment by Daniel Micay (thestinger) - Monday, 21 July 2014, 00:54 GMT
There's a bug open about this on the paxd tracker, and I'm just going to close this in favour of that one. It's really a bug in Firefox anyway.

https://github.com/thestinger/paxd/issues/5

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