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From b4c090d2e12956a2df6157592839936adf4024f4 Mon Sep 17 00:00:00 2001
From: Rob Crittenden <>
Date: Thu, 12 Aug 2021 16:26:09 -0400
Subject: [PATCH] Fix file descriptor leak when executing CA helpers

cm_cadata_start_generic() creates a pipe. One half is passed
to fetch(), the function that does all helper calls,
via the cm_cadata_state variable ret. The other half is the
reader and is used to detect execution errors. There is a pair
of write/read on this descriptor which on error would be the

This second half wasn't being closed after reading to test for

Signed-off-by: Rob Crittenden <>
 src/cadata.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/cadata.c b/src/cadata.c
index cb9c13e2..c2764d3b 100644
--- a/src/cadata.c
+++ b/src/cadata.c
@@ -773,6 +773,7 @@ cm_cadata_start_generic(struct cm_store_ca *ca, const char *op,
 		       ca->cm_ca_external_helper, strerror(u));
 		/* return the state so the process can be reaped */
+	close(error_fd[0]);
 	return ret;