Commit 4ac212ad authored by Stephen Smalley's avatar Stephen Smalley Committed by James Morris

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
...@@ -1907,6 +1907,9 @@ static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm) ...@@ -1907,6 +1907,9 @@ static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm)
spin_unlock_irq(&current->sighand->siglock); 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 /* Check whether the new SID can inherit resource limits
from the old SID. If not, reset all soft limits to from the old SID. If not, reset all soft limits to
the lower of the current task's hard limit and the init the lower of the current task's hard limit and the init
......
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