SELinux: clear parent death signal on SID transitions

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

Stephen Smalley committed 19 years ago

Commit 4ac212a1 parent a1c582d1 file · +3 −0Browse files

Unified · Split

@@ -1907,6 +1907,9 @@ static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm) · 1906 unmodified lines
1907	1907	spin_unlock_irq(&current->sighand->siglock);
1908	1908	}
1909	1909
	1910	+ /* Always clear parent death signal on SID transitions. */
	1911	+ current->pdeath_signal = 0;
	1912	+
1910	1913	/* Check whether the new SID can inherit resource limits
1911	1914	from the old SID. If not, reset all soft limits to
1912	1915	the lower of the current task's hard limit and the init