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From 6052b28839968d5077c182e6defa260e68147547 Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Fri, 15 Mar 2019 17:50:10 +0100
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Subject: [PATCH] libxtables: Don't read garbage in xtables_strtoui()
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1525980
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Upstream Status: iptables commit 61ebf3f72ac62
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commit 61ebf3f72ac62d887414c50fc83e277386f54e8f
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Author: Phil Sutter <phil@nwl.cc>
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Date: Wed Sep 19 15:16:55 2018 +0200
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libxtables: Don't read garbage in xtables_strtoui()
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If xtables_strtoul() fails, it returns false and data pointed to by
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parameter 'value' is undefined. Hence avoid copying that data in
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xtables_strtoui() if the call failed.
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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Signed-off-by: Florian Westphal <fw@strlen.de>
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Signed-off-by: Phil Sutter <psutter@redhat.com>
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---
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libxtables/xtables.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/libxtables/xtables.c b/libxtables/xtables.c
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index fb60c01b48c05..575f7ee0a0d78 100644
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--- a/libxtables/xtables.c
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+++ b/libxtables/xtables.c
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@@ -473,7 +473,7 @@ bool xtables_strtoui(const char *s, char **end, unsigned int *value,
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bool ret;
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ret = xtables_strtoul(s, end, &v, min, max);
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- if (value != NULL)
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+ if (ret && value != NULL)
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*value = v;
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return ret;
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}
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--
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2.21.0
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