From: schwarze@mdocml.bsd.lv
To: source@mdocml.bsd.lv
Subject: mdocml: Avoid out-of-bounds read access before the beginning of the
Date: Mon, 20 Apr 2015 04:49:23 -0500 (EST) [thread overview]
Message-ID: <16727157270666992798.enqueue@fantadrom.bsd.lv> (raw)
Log Message:
-----------
Avoid out-of-bounds read access before the beginning of the
mdoc_macros[] array. This sometimes prevented proper warnings
about text nodes preceding the first section header.
Modified Files:
--------------
mdocml:
mdoc_validate.c
Revision Data
-------------
Index: mdoc_validate.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mdoc_validate.c,v
retrieving revision 1.289
retrieving revision 1.290
diff -Lmdoc_validate.c -Lmdoc_validate.c -u -p -r1.289 -r1.290
--- mdoc_validate.c
+++ mdoc_validate.c
@@ -1562,7 +1562,8 @@ post_root(POST_ARGS)
/* Check that we begin with a proper `Sh'. */
n = mdoc->first->child;
- while (n != NULL && mdoc_macros[n->tok].flags & MDOC_PROLOGUE)
+ while (n != NULL && n->tok != TOKEN_NONE &&
+ mdoc_macros[n->tok].flags & MDOC_PROLOGUE)
n = n->next;
if (n == NULL)
--
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