SELinux: clear parent death signal on SID transitions

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Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4ac212ad4e8fafc22fa147fc255ff5fa5435cf33
Commit:     4ac212ad4e8fafc22fa147fc255ff5fa5435cf33
Parent:     a1c582d0720f2eff61043e90711767decf37b917
Author:     Stephen Smalley <[EMAIL PROTECTED]>
AuthorDate: Wed Aug 29 08:51:50 2007 -0400
Committer:  James Morris <[EMAIL PROTECTED]>
CommitDate: Thu Aug 30 20:22:47 2007 -0400

    SELinux: clear parent death signal on SID transitions
    
    Clear parent death signal on SID transitions to prevent unauthorized
    signaling between SIDs.
    
    Signed-off-by:  Stephen Smalley <[EMAIL PROTECTED]>
    Acked-by: Eric Paris <[EMAIL PROTECTED]>
    Signed-off-by: James Morris <[EMAIL PROTECTED]>
---
 security/selinux/hooks.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index d8bc417..3694662 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1907,6 +1907,9 @@ static void selinux_bprm_post_apply_creds(struct 
linux_binprm *bprm)
                spin_unlock_irq(&current->sighand->siglock);
        }
 
+       /* Always clear parent death signal on SID transitions. */
+       current->pdeath_signal = 0;
+
        /* Check whether the new SID can inherit resource limits
           from the old SID.  If not, reset all soft limits to
           the lower of the current task's hard limit and the init
-
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