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| author | Ingo Schwarze <schwarze@openbsd.org> | 2015-04-20 09:48:53 +0000 |
|---|---|---|
| committer | Ingo Schwarze <schwarze@openbsd.org> | 2015-04-20 09:48:53 +0000 |
| commit | 3ee436ab2a46363611bf798816b6330a09d9b68e (patch) | |
| tree | 54365b924d7261c2ac7d311d7a4e09be1e695a9e /mdoc_validate.c | |
| parent | adb61c0917d43d6cf61cc003e0b829293f796ec6 (diff) | |
| download | mandoc-3ee436ab2a46363611bf798816b6330a09d9b68e.tar.gz | |
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.
Diffstat (limited to 'mdoc_validate.c')
| -rw-r--r-- | mdoc_validate.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mdoc_validate.c b/mdoc_validate.c index dd477eef..616e9b10 100644 --- a/mdoc_validate.c +++ b/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) |