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Commit 4ac212ad authored by Stephen Smalley's avatar Stephen Smalley Committed by James Morris
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SELinux: clear parent death signal on SID transitions 



Clear parent death signal on SID transitions to prevent unauthorized
signaling between SIDs.

Signed-off-by: default avatarStephen Smalley <sds@tycho.nsa.gov>
Acked-by: default avatarEric Paris <eparis@parisplace.org>
Signed-off-by: default avatarJames Morris <jmorris@localhost.localdomain>
parent a1c582d0

security/selinux/hooks.c

+3 −0
Original line number Diff line number Diff line
@@ -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