cve/published/2024/CVE-2024-27018.mbox - pub/scm/linux/security/vulns - Git at Google

 From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001
 From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 To: <linux-cve-announce@vger.kernel.org>
 Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org>
 Subject: CVE-2024-27018: netfilter: br_netfilter: skip conntrack input hook for promisc packets

 Description
 ===========

 In the Linux kernel, the following vulnerability has been resolved:

 netfilter: br_netfilter: skip conntrack input hook for promisc packets

 For historical reasons, when bridge device is in promisc mode, packets
 that are directed to the taps follow bridge input hook path. This patch
 adds a workaround to reset conntrack for these packets.

 Jianbo Liu reports warning splats in their test infrastructure where
 cloned packets reach the br_netfilter input hook to confirm the
 conntrack object.

 Scratch one bit from BR_INPUT_SKB_CB to annotate that this packet has
 reached the input hook because it is passed up to the bridge device to
 reach the taps.

 [   57.571874] WARNING: CPU: 1 PID: 0 at net/bridge/br_netfilter_hooks.c:616 br_nf_local_in+0x157/0x180 [br_netfilter]
 [   57.572749] Modules linked in: xt_MASQUERADE nf_conntrack_netlink nfnetlink iptable_nat xt_addrtype xt_conntrack nf_nat br_netfilter rpcsec_gss_krb5 auth_rpcgss oid_registry overlay rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_isc si ib_umad rdma_cm ib_ipoib iw_cm ib_cm mlx5_ib ib_uverbs ib_core mlx5ctl mlx5_core
 [   57.575158] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.8.0+ #19
 [   57.575700] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
 [   57.576662] RIP: 0010:br_nf_local_in+0x157/0x180 [br_netfilter]
 [   57.577195] Code: fe ff ff 41 bd 04 00 00 00 be 04 00 00 00 e9 4a ff ff ff be 04 00 00 00 48 89 ef e8 f3 a9 3c e1 66 83 ad b4 00 00 00 04 eb 91 <0f> 0b e9 f1 fe ff ff 0f 0b e9 df fe ff ff 48 89 df e8 b3 53 47 e1
 [   57.578722] RSP: 0018:ffff88885f845a08 EFLAGS: 00010202
 [   57.579207] RAX: 0000000000000002 RBX: ffff88812dfe8000 RCX: 0000000000000000
 [   57.579830] RDX: ffff88885f845a60 RSI: ffff8881022dc300 RDI: 0000000000000000
 [   57.580454] RBP: ffff88885f845a60 R08: 0000000000000001 R09: 0000000000000003
 [   57.581076] R10: 00000000ffff1300 R11: 0000000000000002 R12: 0000000000000000
 [   57.581695] R13: ffff8881047ffe00 R14: ffff888108dbee00 R15: ffff88814519b800
 [   57.582313] FS:  0000000000000000(0000) GS:ffff88885f840000(0000) knlGS:0000000000000000
 [   57.583040] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 [   57.583564] CR2: 000000c4206aa000 CR3: 0000000103847001 CR4: 0000000000370eb0
 [   57.584194] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
 0000000000000000
 [   57.584820] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
 0000000000000400
 [   57.585440] Call Trace:
 [   57.585721]  <IRQ>
 [   57.585976]  ? __warn+0x7d/0x130
 [   57.586323]  ? br_nf_local_in+0x157/0x180 [br_netfilter]
 [   57.586811]  ? report_bug+0xf1/0x1c0
 [   57.587177]  ? handle_bug+0x3f/0x70
 [   57.587539]  ? exc_invalid_op+0x13/0x60
 [   57.587929]  ? asm_exc_invalid_op+0x16/0x20
 [   57.588336]  ? br_nf_local_in+0x157/0x180 [br_netfilter]
 [   57.588825]  nf_hook_slow+0x3d/0xd0
 [   57.589188]  ? br_handle_vlan+0x4b/0x110
 [   57.589579]  br_pass_frame_up+0xfc/0x150
 [   57.589970]  ? br_port_flags_change+0x40/0x40
 [   57.590396]  br_handle_frame_finish+0x346/0x5e0
 [   57.590837]  ? ipt_do_table+0x32e/0x430
 [   57.591221]  ? br_handle_local_finish+0x20/0x20
 [   57.591656]  br_nf_hook_thresh+0x4b/0xf0 [br_netfilter]
 [   57.592286]  ? br_handle_local_finish+0x20/0x20
 [   57.592802]  br_nf_pre_routing_finish+0x178/0x480 [br_netfilter]
 [   57.593348]  ? br_handle_local_finish+0x20/0x20
 [   57.593782]  ? nf_nat_ipv4_pre_routing+0x25/0x60 [nf_nat]
 [   57.594279]  br_nf_pre_routing+0x24c/0x550 [br_netfilter]
 [   57.594780]  ? br_nf_hook_thresh+0xf0/0xf0 [br_netfilter]
 [   57.595280]  br_handle_frame+0x1f3/0x3d0
 [   57.595676]  ? br_handle_local_finish+0x20/0x20
 [   57.596118]  ? br_handle_frame_finish+0x5e0/0x5e0
 [   57.596566]  __netif_receive_skb_core+0x25b/0xfc0
 [   57.597017]  ? __napi_build_skb+0x37/0x40
 [   57.597418]  __netif_receive_skb_list_core+0xfb/0x220

 The Linux kernel CVE team has assigned CVE-2024-27018 to this issue.


 Affected and fixed versions
 ===========================

 	Issue introduced in 5.15.151 with commit 7c3f28599652acf431a2211168de4a583f30b6d5 and fixed in 5.15.157 with commit dceb683ab87ca3666a9bb5c0158528b646faedc4
 	Issue introduced in 6.1.81 with commit 2b1414d5e94e477edff1d2c79030f1d742625ea0 and fixed in 6.1.88 with commit b13db0d16bc7b2a52abcf5cb71334f63faa5dbd6
 	Issue introduced in 6.6.21 with commit 80cd0487f630b5382734997c3e5e3003a77db315 and fixed in 6.6.29 with commit 3f59ac29dea0921637053908fe99268d157bbb9d
 	Issue introduced in 6.8 with commit 62e7151ae3eb465e0ab52a20c941ff33bb6332e9 and fixed in 6.8.8 with commit 43193174510ea4f3ce09b796e559a2fd9f148615
 	Issue introduced in 6.8 with commit 62e7151ae3eb465e0ab52a20c941ff33bb6332e9 and fixed in 6.9 with commit 751de2012eafa4d46d8081056761fa0e9cc8a178
 	Issue introduced in 6.7.9 with commit cb734975b0ffa688ff6cc0eed463865bf07b6c01

 Please see https://www.kernel.org for a full list of currently supported
 kernel versions by the kernel community.

 Unaffected versions might change over time as fixes are backported to
 older supported kernel versions.  The official CVE entry at
 	https://cve.org/CVERecord/?id=CVE-2024-27018
 will be updated if fixes are backported, please check that for the most
 up to date information about this issue.


 Affected files
 ==============

 The file(s) affected by this issue are:
 	net/bridge/br_input.c
 	net/bridge/br_netfilter_hooks.c
 	net/bridge/br_private.h
 	net/bridge/netfilter/nf_conntrack_bridge.c


 Mitigation
 ==========

 The Linux kernel CVE team recommends that you update to the latest
 stable kernel version for this, and many other bugfixes.  Individual
 changes are never tested alone, but rather are part of a larger kernel
 release.  Cherry-picking individual commits is not recommended or
 supported by the Linux kernel community at all.  If however, updating to
 the latest release is impossible, the individual changes to resolve this
 issue can be found at these commits:
 	https://git.kernel.org/stable/c/dceb683ab87ca3666a9bb5c0158528b646faedc4
 	https://git.kernel.org/stable/c/b13db0d16bc7b2a52abcf5cb71334f63faa5dbd6
 	https://git.kernel.org/stable/c/3f59ac29dea0921637053908fe99268d157bbb9d
 	https://git.kernel.org/stable/c/43193174510ea4f3ce09b796e559a2fd9f148615
 	https://git.kernel.org/stable/c/751de2012eafa4d46d8081056761fa0e9cc8a178
	From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001
	From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
	To: <linux-cve-announce@vger.kernel.org>
	Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org>
	Subject: CVE-2024-27018: netfilter: br_netfilter: skip conntrack input hook for promisc packets

	Description
	===========

	In the Linux kernel, the following vulnerability has been resolved:

	netfilter: br_netfilter: skip conntrack input hook for promisc packets

	For historical reasons, when bridge device is in promisc mode, packets
	that are directed to the taps follow bridge input hook path. This patch
	adds a workaround to reset conntrack for these packets.

	Jianbo Liu reports warning splats in their test infrastructure where
	cloned packets reach the br_netfilter input hook to confirm the
	conntrack object.

	Scratch one bit from BR_INPUT_SKB_CB to annotate that this packet has
	reached the input hook because it is passed up to the bridge device to
	reach the taps.

	[ 57.571874] WARNING: CPU: 1 PID: 0 at net/bridge/br_netfilter_hooks.c:616 br_nf_local_in+0x157/0x180 [br_netfilter]
	[ 57.572749] Modules linked in: xt_MASQUERADE nf_conntrack_netlink nfnetlink iptable_nat xt_addrtype xt_conntrack nf_nat br_netfilter rpcsec_gss_krb5 auth_rpcgss oid_registry overlay rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_isc si ib_umad rdma_cm ib_ipoib iw_cm ib_cm mlx5_ib ib_uverbs ib_core mlx5ctl mlx5_core
	[ 57.575158] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.8.0+ #19
	[ 57.575700] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
	[ 57.576662] RIP: 0010:br_nf_local_in+0x157/0x180 [br_netfilter]
	[ 57.577195] Code: fe ff ff 41 bd 04 00 00 00 be 04 00 00 00 e9 4a ff ff ff be 04 00 00 00 48 89 ef e8 f3 a9 3c e1 66 83 ad b4 00 00 00 04 eb 91 <0f> 0b e9 f1 fe ff ff 0f 0b e9 df fe ff ff 48 89 df e8 b3 53 47 e1
	[ 57.578722] RSP: 0018:ffff88885f845a08 EFLAGS: 00010202
	[ 57.579207] RAX: 0000000000000002 RBX: ffff88812dfe8000 RCX: 0000000000000000
	[ 57.579830] RDX: ffff88885f845a60 RSI: ffff8881022dc300 RDI: 0000000000000000
	[ 57.580454] RBP: ffff88885f845a60 R08: 0000000000000001 R09: 0000000000000003
	[ 57.581076] R10: 00000000ffff1300 R11: 0000000000000002 R12: 0000000000000000
	[ 57.581695] R13: ffff8881047ffe00 R14: ffff888108dbee00 R15: ffff88814519b800
	[ 57.582313] FS: 0000000000000000(0000) GS:ffff88885f840000(0000) knlGS:0000000000000000
	[ 57.583040] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
	[ 57.583564] CR2: 000000c4206aa000 CR3: 0000000103847001 CR4: 0000000000370eb0
	[ 57.584194] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
	0000000000000000
	[ 57.584820] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
	0000000000000400
	[ 57.585440] Call Trace:
	[ 57.585721] <IRQ>
	[ 57.585976] ? __warn+0x7d/0x130
	[ 57.586323] ? br_nf_local_in+0x157/0x180 [br_netfilter]
	[ 57.586811] ? report_bug+0xf1/0x1c0
	[ 57.587177] ? handle_bug+0x3f/0x70
	[ 57.587539] ? exc_invalid_op+0x13/0x60
	[ 57.587929] ? asm_exc_invalid_op+0x16/0x20
	[ 57.588336] ? br_nf_local_in+0x157/0x180 [br_netfilter]
	[ 57.588825] nf_hook_slow+0x3d/0xd0
	[ 57.589188] ? br_handle_vlan+0x4b/0x110
	[ 57.589579] br_pass_frame_up+0xfc/0x150
	[ 57.589970] ? br_port_flags_change+0x40/0x40
	[ 57.590396] br_handle_frame_finish+0x346/0x5e0
	[ 57.590837] ? ipt_do_table+0x32e/0x430
	[ 57.591221] ? br_handle_local_finish+0x20/0x20
	[ 57.591656] br_nf_hook_thresh+0x4b/0xf0 [br_netfilter]
	[ 57.592286] ? br_handle_local_finish+0x20/0x20
	[ 57.592802] br_nf_pre_routing_finish+0x178/0x480 [br_netfilter]
	[ 57.593348] ? br_handle_local_finish+0x20/0x20
	[ 57.593782] ? nf_nat_ipv4_pre_routing+0x25/0x60 [nf_nat]
	[ 57.594279] br_nf_pre_routing+0x24c/0x550 [br_netfilter]
	[ 57.594780] ? br_nf_hook_thresh+0xf0/0xf0 [br_netfilter]
	[ 57.595280] br_handle_frame+0x1f3/0x3d0
	[ 57.595676] ? br_handle_local_finish+0x20/0x20
	[ 57.596118] ? br_handle_frame_finish+0x5e0/0x5e0
	[ 57.596566] __netif_receive_skb_core+0x25b/0xfc0
	[ 57.597017] ? __napi_build_skb+0x37/0x40
	[ 57.597418] __netif_receive_skb_list_core+0xfb/0x220

	The Linux kernel CVE team has assigned CVE-2024-27018 to this issue.


	Affected and fixed versions
	===========================

	Issue introduced in 5.15.151 with commit 7c3f28599652acf431a2211168de4a583f30b6d5 and fixed in 5.15.157 with commit dceb683ab87ca3666a9bb5c0158528b646faedc4
	Issue introduced in 6.1.81 with commit 2b1414d5e94e477edff1d2c79030f1d742625ea0 and fixed in 6.1.88 with commit b13db0d16bc7b2a52abcf5cb71334f63faa5dbd6
	Issue introduced in 6.6.21 with commit 80cd0487f630b5382734997c3e5e3003a77db315 and fixed in 6.6.29 with commit 3f59ac29dea0921637053908fe99268d157bbb9d
	Issue introduced in 6.8 with commit 62e7151ae3eb465e0ab52a20c941ff33bb6332e9 and fixed in 6.8.8 with commit 43193174510ea4f3ce09b796e559a2fd9f148615
	Issue introduced in 6.8 with commit 62e7151ae3eb465e0ab52a20c941ff33bb6332e9 and fixed in 6.9 with commit 751de2012eafa4d46d8081056761fa0e9cc8a178
	Issue introduced in 6.7.9 with commit cb734975b0ffa688ff6cc0eed463865bf07b6c01

	Please see https://www.kernel.org for a full list of currently supported
	kernel versions by the kernel community.

	Unaffected versions might change over time as fixes are backported to
	older supported kernel versions. The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2024-27018
	will be updated if fixes are backported, please check that for the most
	up to date information about this issue.


	Affected files
	==============

	The file(s) affected by this issue are:
	net/bridge/br_input.c
	net/bridge/br_netfilter_hooks.c
	net/bridge/br_private.h
	net/bridge/netfilter/nf_conntrack_bridge.c


	Mitigation
	==========

	The Linux kernel CVE team recommends that you update to the latest
	stable kernel version for this, and many other bugfixes. Individual
	changes are never tested alone, but rather are part of a larger kernel
	release. Cherry-picking individual commits is not recommended or
	supported by the Linux kernel community at all. If however, updating to
	the latest release is impossible, the individual changes to resolve this
	issue can be found at these commits:
	https://git.kernel.org/stable/c/dceb683ab87ca3666a9bb5c0158528b646faedc4
	https://git.kernel.org/stable/c/b13db0d16bc7b2a52abcf5cb71334f63faa5dbd6
	https://git.kernel.org/stable/c/3f59ac29dea0921637053908fe99268d157bbb9d
	https://git.kernel.org/stable/c/43193174510ea4f3ce09b796e559a2fd9f148615
	https://git.kernel.org/stable/c/751de2012eafa4d46d8081056761fa0e9cc8a178