Messages in this thread | | | Date | Wed, 20 Aug 2008 09:29:50 +1000 (EST) | From | James Morris <> | Subject | Re: [PATCH] CRED: Take cred_exec_mutex in compat_do_execve() and fix error handling in do_execve() |
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On Tue, 19 Aug 2008, David Howells wrote:
> Take cred_exec_mutex in compat_do_execve(). This reflects what do_execve() > does. The mutex protects credentials calculation against PTRACE_ATTACH needing > to alter it mid-exec. > > Also fix the error handling in do_execve(). The mutex needs to be unlocked if > an error occurs after it is taken, but before the install_exec_creds() > released it. > > Signed-off-by: David Howells <dhowells@redhat.com>
Applied to git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6#next-creds
Hopefully this will be in the next linux-next tree for testing.
Alexander, please let us know if it fixes the problem you saw.
- James -- James Morris <jmorris@namei.org>
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