Blame SOURCES/0103-tc-tc_filter-Make-sure-filter-name-is-not-empty.patch
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From a4c190565a85db814ad1185ada5382e7fb8707a0 Mon Sep 17 00:00:00 2001
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From: Andrea Claudi <aclaudi@redhat.com>
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Date: Mon, 29 Apr 2019 20:08:08 +0200
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Subject: [PATCH] tc/tc_filter: Make sure filter name is not empty
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1465646
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Upstream Status: iproute2.git commit 75716932a0af2
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commit 75716932a0af28da207aa57c212794ab28ce9036
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Author: Phil Sutter <phil@nwl.cc>
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Date: Thu Aug 24 11:46:33 2017 +0200
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tc/tc_filter: Make sure filter name is not empty
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The later check for 'k[0] != 0' requires a non-empty filter name,
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otherwise NULL pointer dereference in 'q' might happen.
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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---
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tc/tc_filter.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/tc/tc_filter.c b/tc/tc_filter.c
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index e640492b25ba6..a6bb73d12eaba 100644
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--- a/tc/tc_filter.c
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+++ b/tc/tc_filter.c
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@@ -380,6 +380,9 @@ static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv)
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usage();
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return 0;
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} else {
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+ if (!**argv)
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+ invarg("invalid filter name", *argv);
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+
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strncpy(k, *argv, sizeof(k)-1);
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q = get_filter_kind(k);
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--
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2.20.1
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