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32 lines
1.1 KiB
32 lines
1.1 KiB
2 years ago
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From 5ee8338b9f1b5c02efca1a33185cf648cdf1aa20 Mon Sep 17 00:00:00 2001
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From: Phil Sutter <phil@nwl.cc>
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Date: Thu, 5 Dec 2019 11:40:26 +0100
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Subject: [PATCH] xtables-restore: Avoid access of uninitialized data
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When flushing, 'buffer' is not written to prior to checking its first
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byte's value. Therefore it needs to be initialized upon declaration.
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Fixes: 09cb517949e69 ("xtables-restore: Improve performance of --noflush operation")
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(cherry picked from commit 48be21bf39f9af35d53af0e211cbd50dcfd12d08)
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Signed-off-by: Phil Sutter <psutter@redhat.com>
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---
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iptables/xtables-restore.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/iptables/xtables-restore.c b/iptables/xtables-restore.c
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index dd907e0b8ddd5..63cc15cee9621 100644
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--- a/iptables/xtables-restore.c
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+++ b/iptables/xtables-restore.c
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@@ -281,7 +281,7 @@ void xtables_restore_parse(struct nft_handle *h,
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const struct nft_xt_restore_parse *p)
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{
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struct nft_xt_restore_state state = {};
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- char preload_buffer[PREBUFSIZ] = {}, buffer[10240], *ptr;
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+ char preload_buffer[PREBUFSIZ] = {}, buffer[10240] = {}, *ptr;
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if (!h->noflush) {
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nft_fake_cache(h);
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--
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2.24.0
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