| 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-2024-47685: netfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| netfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put() |
| |
| syzbot reported that nf_reject_ip6_tcphdr_put() was possibly sending |
| garbage on the four reserved tcp bits (th->res1) |
| |
| Use skb_put_zero() to clear the whole TCP header, |
| as done in nf_reject_ip_tcphdr_put() |
| |
| BUG: KMSAN: uninit-value in nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255 |
| nf_reject_ip6_tcphdr_put+0x688/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:255 |
| nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344 |
| nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48 |
| expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline] |
| nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288 |
| nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161 |
| nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] |
| nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626 |
| nf_hook include/linux/netfilter.h:269 [inline] |
| NF_HOOK include/linux/netfilter.h:312 [inline] |
| ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310 |
| __netif_receive_skb_one_core net/core/dev.c:5661 [inline] |
| __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5775 |
| process_backlog+0x4ad/0xa50 net/core/dev.c:6108 |
| __napi_poll+0xe7/0x980 net/core/dev.c:6772 |
| napi_poll net/core/dev.c:6841 [inline] |
| net_rx_action+0xa5a/0x19b0 net/core/dev.c:6963 |
| handle_softirqs+0x1ce/0x800 kernel/softirq.c:554 |
| __do_softirq+0x14/0x1a kernel/softirq.c:588 |
| do_softirq+0x9a/0x100 kernel/softirq.c:455 |
| __local_bh_enable_ip+0x9f/0xb0 kernel/softirq.c:382 |
| local_bh_enable include/linux/bottom_half.h:33 [inline] |
| rcu_read_unlock_bh include/linux/rcupdate.h:908 [inline] |
| __dev_queue_xmit+0x2692/0x5610 net/core/dev.c:4450 |
| dev_queue_xmit include/linux/netdevice.h:3105 [inline] |
| neigh_resolve_output+0x9ca/0xae0 net/core/neighbour.c:1565 |
| neigh_output include/net/neighbour.h:542 [inline] |
| ip6_finish_output2+0x2347/0x2ba0 net/ipv6/ip6_output.c:141 |
| __ip6_finish_output net/ipv6/ip6_output.c:215 [inline] |
| ip6_finish_output+0xbb8/0x14b0 net/ipv6/ip6_output.c:226 |
| NF_HOOK_COND include/linux/netfilter.h:303 [inline] |
| ip6_output+0x356/0x620 net/ipv6/ip6_output.c:247 |
| dst_output include/net/dst.h:450 [inline] |
| NF_HOOK include/linux/netfilter.h:314 [inline] |
| ip6_xmit+0x1ba6/0x25d0 net/ipv6/ip6_output.c:366 |
| inet6_csk_xmit+0x442/0x530 net/ipv6/inet6_connection_sock.c:135 |
| __tcp_transmit_skb+0x3b07/0x4880 net/ipv4/tcp_output.c:1466 |
| tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline] |
| tcp_connect+0x35b6/0x7130 net/ipv4/tcp_output.c:4143 |
| tcp_v6_connect+0x1bcc/0x1e40 net/ipv6/tcp_ipv6.c:333 |
| __inet_stream_connect+0x2ef/0x1730 net/ipv4/af_inet.c:679 |
| inet_stream_connect+0x6a/0xd0 net/ipv4/af_inet.c:750 |
| __sys_connect_file net/socket.c:2061 [inline] |
| __sys_connect+0x606/0x690 net/socket.c:2078 |
| __do_sys_connect net/socket.c:2088 [inline] |
| __se_sys_connect net/socket.c:2085 [inline] |
| __x64_sys_connect+0x91/0xe0 net/socket.c:2085 |
| x64_sys_call+0x27a5/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:43 |
| do_syscall_x64 arch/x86/entry/common.c:52 [inline] |
| do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 |
| entry_SYSCALL_64_after_hwframe+0x77/0x7f |
| |
| Uninit was stored to memory at: |
| nf_reject_ip6_tcphdr_put+0x60c/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:249 |
| nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344 |
| nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48 |
| expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline] |
| nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288 |
| nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161 |
| nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] |
| nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626 |
| nf_hook include/linux/netfilter.h:269 [inline] |
| NF_HOOK include/linux/netfilter.h:312 [inline] |
| ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310 |
| __netif_receive_skb_one_core net/core/dev.c:5661 [inline] |
| __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5775 |
| process_backlog+0x4ad/0xa50 net/core/dev.c:6108 |
| __napi_poll+0xe7/0x980 net/core/dev.c:6772 |
| napi_poll net/core/dev.c:6841 [inline] |
| net_rx_action+0xa5a/0x19b0 net/core/dev.c:6963 |
| handle_softirqs+0x1ce/0x800 kernel/softirq.c:554 |
| __do_softirq+0x14/0x1a kernel/softirq.c:588 |
| |
| Uninit was stored to memory at: |
| nf_reject_ip6_tcphdr_put+0x2ca/0x6c0 net/ipv6/netfilter/nf_reject_ipv6.c:231 |
| nf_send_reset6+0xd84/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:344 |
| nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48 |
| expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline] |
| nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288 |
| nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161 |
| nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] |
| nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626 |
| nf_hook include/linux/netfilter.h:269 [inline] |
| NF_HOOK include/linux/netfilter.h:312 [inline] |
| ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310 |
| __netif_receive_skb_one_core net/core/dev.c:5661 [inline] |
| __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5775 |
| process_backlog+0x4ad/0xa50 net/core/dev.c:6108 |
| __napi_poll+0xe7/0x980 net/core/dev.c:6772 |
| napi_poll net/core/dev.c:6841 [inline] |
| net_rx_action+0xa5a/0x19b0 net/core/dev.c:6963 |
| handle_softirqs+0x1ce/0x800 kernel/softirq.c:554 |
| __do_softirq+0x14/0x1a kernel/softirq.c:588 |
| |
| Uninit was created at: |
| slab_post_alloc_hook mm/slub.c:3998 [inline] |
| slab_alloc_node mm/slub.c:4041 [inline] |
| kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4084 |
| kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:583 |
| __alloc_skb+0x363/0x7b0 net/core/skbuff.c:674 |
| alloc_skb include/linux/skbuff.h:1320 [inline] |
| nf_send_reset6+0x98d/0x15b0 net/ipv6/netfilter/nf_reject_ipv6.c:327 |
| nft_reject_inet_eval+0x3c1/0x880 net/netfilter/nft_reject_inet.c:48 |
| expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline] |
| nft_do_chain+0x438/0x22a0 net/netfilter/nf_tables_core.c:288 |
| nft_do_chain_inet+0x41a/0x4f0 net/netfilter/nft_chain_filter.c:161 |
| nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] |
| nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626 |
| nf_hook include/linux/netfilter.h:269 [inline] |
| NF_HOOK include/linux/netfilter.h:312 [inline] |
| ipv6_rcv+0x29b/0x390 net/ipv6/ip6_input.c:310 |
| __netif_receive_skb_one_core net/core/dev.c:5661 [inline] |
| __netif_receive_skb+0x1da/0xa00 net/core/dev.c:5775 |
| process_backlog+0x4ad/0xa50 net/core/dev.c:6108 |
| __napi_poll+0xe7/0x980 net/core/dev.c:6772 |
| napi_poll net/core/dev.c:6841 [inline] |
| net_rx_action+0xa5a/0x19b0 net/core/dev.c:6963 |
| handle_softirqs+0x1ce/0x800 kernel/softirq.c:554 |
| __do_softirq+0x14/0x1a kernel/softirq.c:588 |
| |
| The Linux kernel CVE team has assigned CVE-2024-47685 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.18 with commit c8d7b98bec43faaa6583c3135030be5eb4693acb and fixed in 4.19.323 with commit 872eca64c3267dbc5836b715716fc6c03a18eda7 |
| Issue introduced in 3.18 with commit c8d7b98bec43faaa6583c3135030be5eb4693acb and fixed in 5.4.285 with commit 7bcbc4cda777d26c88500d973fad0d497fc8a82e |
| Issue introduced in 3.18 with commit c8d7b98bec43faaa6583c3135030be5eb4693acb and fixed in 5.10.227 with commit dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5 |
| Issue introduced in 3.18 with commit c8d7b98bec43faaa6583c3135030be5eb4693acb and fixed in 5.15.168 with commit fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd |
| Issue introduced in 3.18 with commit c8d7b98bec43faaa6583c3135030be5eb4693acb and fixed in 6.1.113 with commit 7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2 |
| Issue introduced in 3.18 with commit c8d7b98bec43faaa6583c3135030be5eb4693acb and fixed in 6.6.54 with commit af4b8a704f26f38310655bad67fd8096293275a2 |
| Issue introduced in 3.18 with commit c8d7b98bec43faaa6583c3135030be5eb4693acb and fixed in 6.10.13 with commit 7a7b5a27c53b55e91eecf646d1b204e73fa4af93 |
| Issue introduced in 3.18 with commit c8d7b98bec43faaa6583c3135030be5eb4693acb and fixed in 6.11.2 with commit 10210658f827ad45061581cbfc05924b723e8922 |
| Issue introduced in 3.18 with commit c8d7b98bec43faaa6583c3135030be5eb4693acb and fixed in 6.12 with commit 9c778fe48d20ef362047e3376dee56d77f8500d4 |
| |
| 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-2024-47685 |
| 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/ipv6/netfilter/nf_reject_ipv6.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/872eca64c3267dbc5836b715716fc6c03a18eda7 |
| https://git.kernel.org/stable/c/7bcbc4cda777d26c88500d973fad0d497fc8a82e |
| https://git.kernel.org/stable/c/dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5 |
| https://git.kernel.org/stable/c/fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd |
| https://git.kernel.org/stable/c/7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2 |
| https://git.kernel.org/stable/c/af4b8a704f26f38310655bad67fd8096293275a2 |
| https://git.kernel.org/stable/c/7a7b5a27c53b55e91eecf646d1b204e73fa4af93 |
| https://git.kernel.org/stable/c/10210658f827ad45061581cbfc05924b723e8922 |
| https://git.kernel.org/stable/c/9c778fe48d20ef362047e3376dee56d77f8500d4 |
