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.gitignore
vendored
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.gitignore
vendored
@ -1 +1 @@
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SOURCES/passt-b86afe3559c0bd3d24bc6fed7c60466cf141224c.tar.xz
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SOURCES/passt-ee36266a55478672ad2c5f4efbd6ca0bef3d37cd.tar.xz
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@ -1 +1 @@
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833dc4cee84bf49eb54354f5da5ae07748ce2969 SOURCES/passt-b86afe3559c0bd3d24bc6fed7c60466cf141224c.tar.xz
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421a821e193faa31035a158c913c70d7fc13bf68 SOURCES/passt-ee36266a55478672ad2c5f4efbd6ca0bef3d37cd.tar.xz
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@ -0,0 +1,64 @@
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From 002b2a23380d4df552bac7665d462ac4c7bced0b Mon Sep 17 00:00:00 2001
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From: David Gibson <david@gibson.dropbear.id.au>
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Date: Wed, 14 Aug 2024 20:03:33 +1000
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Subject: [PATCH] flow: Don't crash if guest attempts to connect to port 0
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Using a zero port on TCP or UDP is dubious, and we can't really deal with
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forwarding such a flow within the constraints of the socket API. Hence
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we ASSERT()ed that we had non-zero ports in flow_hash().
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The intention was to make sure that the protocol code sanitizes such ports
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before completing a flow entry. Unfortunately, flow_hash() is also called
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on new packets to see if they have an existing flow, so the unsanitized
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guest packet can crash passt with the assert.
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Correct this by moving the assert from flow_hash() to flow_sidx_hash()
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which is only used on entries already in the table, not on unsanitized
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data.
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Reported-by: Matt Hamilton <matt@thmail.io>
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Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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---
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flow.c | 18 ++++++++++--------
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1 file changed, 10 insertions(+), 8 deletions(-)
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diff --git a/flow.c b/flow.c
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index 687e9fd..93b687d 100644
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--- a/flow.c
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+++ b/flow.c
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@@ -561,12 +561,6 @@ static uint64_t flow_hash(const struct ctx *c, uint8_t proto, uint8_t pif,
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{
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struct siphash_state state = SIPHASH_INIT(c->hash_secret);
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- /* For the hash table to work, we need complete endpoint information,
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- * and at least a forwarding port.
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- */
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- ASSERT(pif != PIF_NONE && !inany_is_unspecified(&side->eaddr) &&
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- side->eport != 0 && side->fport != 0);
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-
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inany_siphash_feed(&state, &side->faddr);
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inany_siphash_feed(&state, &side->eaddr);
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@@ -586,8 +580,16 @@ static uint64_t flow_hash(const struct ctx *c, uint8_t proto, uint8_t pif,
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static uint64_t flow_sidx_hash(const struct ctx *c, flow_sidx_t sidx)
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{
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const struct flow_common *f = &flow_at_sidx(sidx)->f;
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- return flow_hash(c, FLOW_PROTO(f),
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- f->pif[sidx.sidei], &f->side[sidx.sidei]);
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+ const struct flowside *side = &f->side[sidx.sidei];
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+ uint8_t pif = f->pif[sidx.sidei];
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+
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+ /* For the hash table to work, entries must have complete endpoint
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+ * information, and at least a forwarding port.
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+ */
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+ ASSERT(pif != PIF_NONE && !inany_is_unspecified(&side->eaddr) &&
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+ side->eport != 0 && side->fport != 0);
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+
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+ return flow_hash(c, FLOW_PROTO(f), pif, side);
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}
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/**
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--
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2.43.0
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@ -7,19 +7,20 @@
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# Copyright (c) 2022 Red Hat GmbH
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# Copyright (c) 2022 Red Hat GmbH
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# Author: Stefano Brivio <sbrivio@redhat.com>
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# Author: Stefano Brivio <sbrivio@redhat.com>
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%global git_hash b86afe3559c0bd3d24bc6fed7c60466cf141224c
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%global git_hash ee36266a55478672ad2c5f4efbd6ca0bef3d37cd
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%global selinuxtype targeted
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%global selinuxtype targeted
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Name: passt
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Name: passt
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Version: 0^20231204.gb86afe3
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Version: 0^20240806.gee36266
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Release: 1%{?dist}
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Release: 2%{?dist}
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Summary: User-mode networking daemons for virtual machines and namespaces
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Summary: User-mode networking daemons for virtual machines and namespaces
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License: GPLv2+ and BSD
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License: GPL-2.0-or-later AND BSD-3-Clause
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Group: System Environment/Daemons
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Group: System Environment/Daemons
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URL: https://passt.top/
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URL: https://passt.top/
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Source: https://passt.top/passt/snapshot/passt-%{git_hash}.tar.xz
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Source: https://passt.top/passt/snapshot/passt-%{git_hash}.tar.xz
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Patch1: 0001-selinux-Drop-user_namespace-create-allow-rules.patch
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Patch1: 0001-selinux-Drop-user_namespace-create-allow-rules.patch
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Patch2: 0002-flow-Don-t-crash-if-guest-attempts-to-connect-to-por.patch
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BuildRequires: gcc, make, git, checkpolicy, selinux-policy-devel
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BuildRequires: gcc, make, git, checkpolicy, selinux-policy-devel
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Requires: (%{name}-selinux = %{version}-%{release} if selinux-policy-%{selinuxtype})
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Requires: (%{name}-selinux = %{version}-%{release} if selinux-policy-%{selinuxtype})
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@ -126,6 +127,21 @@ fi
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%{_datadir}/selinux/packages/%{selinuxtype}/pasta.pp
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%{_datadir}/selinux/packages/%{selinuxtype}/pasta.pp
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%changelog
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%changelog
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* Wed Aug 14 2024 Stefano Brivio <sbrivio@redhat.com> - 0^20240806-gee36266-2
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- Resolves: RHEL-54268
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* Wed Aug 7 2024 Stefano Brivio <sbrivio@redhat.com> - 0^20240806.gee36266-1
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- Resolves: RHEL-53189
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* Fri Aug 2 2024 Stefano Brivio <sbrivio@redhat.com> - 0^20240726.g57a21d2-1
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- Resolves: RHEL-52638
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* Mon Jun 24 2024 Stefano Brivio <sbrivio@redhat.com> - 0^20240624.g1ee2eca-1
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- Resolves: RHEL-44837
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* Wed May 22 2024 Stefano Brivio <sbrivio@redhat.com> - 0^20240510.g7288448-1
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- Resolves: RHEL-37647
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* Fri Dec 15 2023 Stefano Brivio <sbrivio@redhat.com> - 0^20231204.gb86afe3-1
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* Fri Dec 15 2023 Stefano Brivio <sbrivio@redhat.com> - 0^20231204.gb86afe3-1
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- Resolves: RHEL-19590
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- Resolves: RHEL-19590
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