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30 lines
797 B
30 lines
797 B
From 3bdeed02505c9bbacb3b64a97ddcb1de967153b7 Mon Sep 17 00:00:00 2001
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From: Willem Toorop <willem@nlnetlabs.nl>
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Date: Thu, 27 Apr 2017 00:25:20 +0200
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Subject: [PATCH] bugfix #1257: Free after reallocing to 0 size
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Thanks Stephan Zeisberg
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---
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str2host.c | 6 ++++--
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1 file changed, 4 insertions(+), 2 deletions(-)
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diff --git a/str2host.c b/str2host.c
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index b274b17..f2a317b 100644
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--- a/str2host.c
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+++ b/str2host.c
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@@ -1525,8 +1525,10 @@ ldns_str2rdf_long_str(ldns_rdf **rd, const char *str)
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if (! str) {
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return LDNS_STATUS_SYNTAX_BAD_ESCAPE;
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}
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- length = (size_t)(dp - data);
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-
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+ if (!(length = (size_t)(dp - data))) {
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+ LDNS_FREE(data);
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+ return LDNS_STATUS_SYNTAX_EMPTY;
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+ }
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/* Lose the overmeasure */
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data = LDNS_XREALLOC(dp = data, uint8_t, length);
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if (! data) {
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--
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2.9.5
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