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 ---truncated---

Metrics

 

CVSS Version 4.0 CVSS Version 3.x CVSS Version 2.0

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score:  9.1 CRITICAL

Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://git.kernel.org/stable/c/10210658f827ad45061581cbfc05924b723e8922	Patch
https://git.kernel.org/stable/c/7a7b5a27c53b55e91eecf646d1b204e73fa4af93	Patch
https://git.kernel.org/stable/c/7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2	Patch
https://git.kernel.org/stable/c/9c778fe48d20ef362047e3376dee56d77f8500d4	Patch
https://git.kernel.org/stable/c/af4b8a704f26f38310655bad67fd8096293275a2	Patch
https://git.kernel.org/stable/c/dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5	Patch
https://git.kernel.org/stable/c/fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd	Patch

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-908	Use of Uninitialized Resource	NIST

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Change History

2 change records found show changes

Initial Analysis by NIST 10/23/2024 11:19:06 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 648 characters. View Entire Change Record OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.18 up to (excluding) 5.10.227 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.168 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.113 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.54 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Added	CWE		NIST CWE-908
Changed	Reference Type	https://git.kernel.org/stable/c/10210658f827ad45061581cbfc05924b723e8922 No Types Assigned	https://git.kernel.org/stable/c/10210658f827ad45061581cbfc05924b723e8922 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/7a7b5a27c53b55e91eecf646d1b204e73fa4af93 No Types Assigned	https://git.kernel.org/stable/c/7a7b5a27c53b55e91eecf646d1b204e73fa4af93 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2 No Types Assigned	https://git.kernel.org/stable/c/7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/9c778fe48d20ef362047e3376dee56d77f8500d4 No Types Assigned	https://git.kernel.org/stable/c/9c778fe48d20ef362047e3376dee56d77f8500d4 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/af4b8a704f26f38310655bad67fd8096293275a2 No Types Assigned	https://git.kernel.org/stable/c/af4b8a704f26f38310655bad67fd8096293275a2 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5 No Types Assigned	https://git.kernel.org/stable/c/dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd No Types Assigned	https://git.kernel.org/stable/c/fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd Patch

New CVE Received by NIST 10/21/2024 8:15:05 AM

Action	Type	Old Value	New Value
Added	Description		Record truncated, showing 500 of 3998 characters. View Entire Change Record 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
Added	Reference		kernel.org https://git.kernel.org/stable/c/10210658f827ad45061581cbfc05924b723e8922 [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/7a7b5a27c53b55e91eecf646d1b204e73fa4af93 [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/7ea2bcfd9bf4c3dbbf22546162226fd1c14d8ad2 [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/9c778fe48d20ef362047e3376dee56d77f8500d4 [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/af4b8a704f26f38310655bad67fd8096293275a2 [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/dcf48ab3ca2c55b09c8f9c8de0df01c1943bc4e5 [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/fbff87d682e57ddbbe82abf6d0a1a4a36a98afcd [No types assigned]