31 lines
835 B
Diff
31 lines
835 B
Diff
From a800b7e058b09031aba92949eecf2c76fa030635 Mon Sep 17 00:00:00 2001
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From: Nick Wellnhofer <wellnhofer@aevum.de>
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Date: Thu, 4 May 2023 12:47:00 +0200
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Subject: [PATCH] regexp: Fix null deref in xmlFAFinishReduceEpsilonTransitions
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Short-lived regression found by OSS-Fuzz.
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Reference:https://github.com/GNOME/libxml2/commit/a800b7e058b09031aba92949eecf2c76fa030635
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Conflict:NA
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---
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xmlregexp.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/xmlregexp.c b/xmlregexp.c
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index 185fcda..b0111e2 100644
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--- a/xmlregexp.c
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+++ b/xmlregexp.c
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@@ -1896,6 +1896,8 @@ xmlFAFinishReduceEpsilonTransitions(xmlRegParserCtxtPtr ctxt, int tonr) {
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xmlRegStatePtr to;
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to = ctxt->states[tonr];
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+ if (to == NULL)
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+ return;
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if ((to->mark == XML_REGEXP_MARK_START) ||
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(to->mark == XML_REGEXP_MARK_NORMAL))
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return;
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--
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2.27.0
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