36 lines
1.1 KiB
Diff
36 lines
1.1 KiB
Diff
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From f33745a22b4133c59059356a23dbbc229067e3c1 Mon Sep 17 00:00:00 2001
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From: James Carter <jwcart2@gmail.com>
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Date: Mon, 21 Jun 2021 10:56:43 -0400
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Subject: [PATCH] libsepol/cil: Check for empty list when marking neverallow
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attributes
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When marking a type attribute as used in a neverallow (to help determine
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whether or not it should be expanded), check if the attribute's expression
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list is empty (no attributes are associated with it) before iterating
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over the list.
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Signed-off-by: James Carter <jwcart2@gmail.com>
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Acked-by: Nicolas Iooss <nicolas.iooss@m4x.org>
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---
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libsepol/cil/src/cil_post.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/libsepol/cil/src/cil_post.c b/libsepol/cil/src/cil_post.c
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index 7bca0834ad39..7e2c2b9a85c3 100644
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--- a/libsepol/cil/src/cil_post.c
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+++ b/libsepol/cil/src/cil_post.c
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@@ -1494,6 +1494,10 @@ static void __mark_neverallow_attrs(struct cil_list *expr_list)
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{
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struct cil_list_item *curr;
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+ if (!expr_list) {
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+ return;
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+ }
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+
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cil_list_for_each(curr, expr_list) {
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if (curr->flavor == CIL_DATUM) {
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if (FLAVOR(curr->data) == CIL_TYPEATTRIBUTE) {
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--
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2.32.0
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