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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:  Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Eric Paris <eparis@parisplace.org>
Signed-off-by: James Morris <jmorris@localhost.localdomain>
This commit is contained in:
Stephen Smalley 2007-08-29 08:51:50 -04:00 committed by James Morris
parent a1c582d072
commit 4ac212ad4e
1 changed files with 3 additions and 0 deletions
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3
security/selinux/hooks.c
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@ -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