e5fba7f9b3
- kvm-Drop-bogus-IPv6-messages.patch [bz#1867075] - kvm-machine-types-numa-set-numa_mem_supported-on-old-mac.patch [bz#1849707] - kvm-machine_types-numa-compatibility-for-auto_enable_num.patch [bz#1849707] - kvm-migration-Add-block-bitmap-mapping-parameter.patch [bz#1790492] - kvm-iotests.py-Let-wait_migration-return-on-failure.patch [bz#1790492] - kvm-iotests-Test-node-bitmap-aliases-during-migration.patch [bz#1790492] - Resolves: bz#1790492 ('dirty-bitmaps' migration capability should allow configuring target nodenames) - Resolves: bz#1849707 (8.3 machine types for x86 - 5.1 update) - Resolves: bz#1867075 (CVE-2020-10756 virt:8.3/qemu-kvm: QEMU: slirp: networking out-of-bounds read information disclosure vulnerability [rhel-av-8])
52 lines
1.7 KiB
Diff
52 lines
1.7 KiB
Diff
From 6ceab004edfb7c1f0f03701bc2ae443941468fd7 Mon Sep 17 00:00:00 2001
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From: Jon Maloy <jmaloy@redhat.com>
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Date: Mon, 17 Aug 2020 22:06:08 -0400
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Subject: [PATCH 1/6] Drop bogus IPv6 messages
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Jon Maloy <jmaloy@redhat.com>
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Message-id: <20200817220608.1142611-2-jmaloy@redhat.com>
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Patchwork-id: 98161
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O-Subject: [RHEL-AV-8.3.0 qemu-kvm PATCH 1/1] Drop bogus IPv6 messages
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Bugzilla: 1867075
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RH-Acked-by: Danilo de Paula <ddepaula@redhat.com>
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RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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RH-Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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From: Ralf Haferkamp <rhafer@suse.com>
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Drop IPv6 message shorter than what's mentioned in the payload
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length header (+ the size of the IPv6 header). They're invalid an could
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lead to data leakage in icmp6_send_echoreply().
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(cherry picked from libslirp commit c7ede54cbd2e2b25385325600958ba0124e31cc0)
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Signed-off-by: Jon Maloy <jmaloy@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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slirp/src/ip6_input.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/slirp/src/ip6_input.c b/slirp/src/ip6_input.c
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index a83e4f8e3d..f7ef354ee4 100644
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--- a/slirp/src/ip6_input.c
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+++ b/slirp/src/ip6_input.c
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@@ -56,6 +56,13 @@ void ip6_input(struct mbuf *m)
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goto bad;
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}
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+ // Check if the message size is big enough to hold what's
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+ // set in the payload length header. If not this is an invalid
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+ // packet
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+ if (m->m_len < ntohs(ip6->ip_pl) + sizeof(struct ip6)) {
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+ goto bad;
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+ }
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+
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/* check ip_ttl for a correct ICMP reply */
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if (ip6->ip_hl == 0) {
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icmp6_send_error(m, ICMP6_TIMXCEED, ICMP6_TIMXCEED_INTRANS);
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--
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2.27.0
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