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Re: CVE Request -- kernel: futex: clear robust_list on execve
From: akuster <akuster () mvista com>
Date: Thu, 05 Jan 2012 05:33:47 -1000

Could it be said that this issue was introduced by these two commits in
2.6.16 ?

0771dfefc9e538f077d0b43b6dec19a5a67d0e70
34f192c6527f20c47ccec239e7d51a27691b93fc

- Armin

On 01/04/2012 12:10 PM, Petr Matousek wrote:
Move "exit_robust_list" into mm_release() and clear them

We don't want to get rid of the futexes just at exit() time, we want to
drop them when doing an execve() too, since that gets rid of the
previous VM image too.

Doing it at mm_release() time means that we automatically always do it
when we disassociate a VM map from the task.

Upstream patches:
8141c7f3e7aee618312fa1c15109e1219de784a7
fc6b177dee33365ccb29fe6d2092223cf8d679f9

Reference:
https://bugzilla.redhat.com/show_bug.cgi?id=771764



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