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28 lines
951 B
28 lines
951 B
6 years ago
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diff --git a/builtins/pushd.def b/builtins/pushd.def
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index 05b7529..4eb0132 100644
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--- a/builtins/pushd.def
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+++ b/builtins/pushd.def
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@@ -353,7 +353,7 @@ popd_builtin (list)
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break;
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}
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- if (which > directory_list_offset || (directory_list_offset == 0 && which == 0))
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+ if (which > directory_list_offset || (which < -directory_list_offset) || (directory_list_offset == 0 && which == 0))
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{
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pushd_error (directory_list_offset, which_word ? which_word : "");
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return (EXECUTION_FAILURE);
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@@ -375,6 +375,11 @@ popd_builtin (list)
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remove that directory from the list and shift the remainder
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of the list into place. */
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i = (direction == '+') ? directory_list_offset - which : which;
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+ if (i < 0 || i > directory_list_offset)
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+ {
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+ pushd_error (directory_list_offset, which_word ? which_word : "");
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+ return (EXECUTION_FAILURE);
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+ }
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free (pushd_directory_list[i]);
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directory_list_offset--;
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--
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2.9.3
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