** Changed in: linux-ec2 (Ubuntu Lucid)
Status: New => Fix Released
** Changed in: linux (Ubuntu Utopic)
Status: Confirmed => Fix Committed
** Description changed:
If uaddr == uaddr2, then we have broken the rule of only requeueing from
a non-pi futex to a pi futex with this call. If we attempt this, then
dangling pointers may be left for rt_waiter resulting in an exploitable
condition.
- Break-Fix: 52400ba946759af28442dee6265c5c0180ac7122 -
+ Break-Fix: 52400ba946759af28442dee6265c5c0180ac7122
54a217887a7b658e2650c3feff22756ab80c7339
+ Break-Fix: 52400ba946759af28442dee6265c5c0180ac7122
13fbca4c6ecd96ec1a1cfa2e4f2ce191fe928a5e
+ Break-Fix: 52400ba946759af28442dee6265c5c0180ac7122
b3eaa9fc5cd0a4d74b18f6b8dc617aeaf1873270
+ Break-Fix: 52400ba946759af28442dee6265c5c0180ac7122
e9c243a5a6de0be8e584c604d353412584b592f8
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https://bugs.launchpad.net/bugs/1326367
Title:
exploitable futex vulnerability
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