CVE-2026-43441

Schwachstellenklasse

In the Linux kernel, the following vulnerability has been resolved: net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled When booting with the 'ipv6.disable=1' parameter, the nd_tbl is never initialized because inet6_init() exits before ndisc_init() is called which initializes it. If bonding ARP/NS validation is enabled, an IPv6 NS/NA packet received on a slave can reach bond_validate_na(), which calls bond_has_this_ip6(). That path calls ipv6_chk_addr() and can crash in __ipv6_chk_addr_and_flags(). BUG: kernel NULL pointer dereference, address: 00000000000005d8 Oops: Oops: 0000 [#1] SMP NOPTI RIP: 0010:__ipv6_chk_addr_and_flags+0x69/0x170 Call Trace: <IRQ> ipv6_chk_addr+0x1f/0x30 bond_validate_na+0x12e/0x1d0 [bonding] ? __pfx_bond_handle_frame+0x10/0x10 [bonding] bond_rcv_validate+0x1a0/0x450 [bonding] bond_handle_frame+0x5e/0x290 [bonding] ? srso_alias_return_thunk+0x5/0xfbef5 __netif_receive_skb_core.constprop.0+0x3e8/0xe50 ? srso_alias_return_thunk+0x5/0xfbef5 ? update_cfs_rq_load_avg+0x1a/0x240 ? srso_alias_return_thunk+0x5/0xfbef5 ? __enqueue_entity+0x5e/0x240 __netif_receive_skb_one_core+0x39/0xa0 process_backlog+0x9c/0x150 __napi_poll+0x30/0x200 ? srso_alias_retu

Betroffene Produkte

• linux linux_kernel

Quellen

• https://git.kernel.org/stable/c/30021e969d48e5819d5ae56936c2f34c0f7ce997
• https://git.kernel.org/stable/c/49dbfcb70eca5f6f9043594e1e323c74c39e3863
• https://git.kernel.org/stable/c/95faa1459b83fa544191e82ccc73856f03b7741f
• https://git.kernel.org/stable/c/c78f01abe535853f13f0b26cd5b1d2f19bf52e2f
• https://git.kernel.org/stable/c/c9c238066fb254dabf65e27379f93c56112c5b96
• https://git.kernel.org/stable/c/cf6099ef493b94e140b0fad52482a78853115318