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_return_thunk+0x5/0xfbef5 net_rx_action+0x338/0x3b0 handle_softirqs+0xc9/0x2a0 do_softirq+0x42/0x60 </IRQ> <TASK> __local_bh_enable_ip+0x62/0x70 __dev_queue_xmit+0x2d3/0x1000 ? srso_alias_return_thunk+0x5/0xfbef5 ? srso_alias_return_thunk+0x5/0xfbef5 ? packet_parse_headers+0x10a/0x1a0 packet_sendmsg+0x10da/0x1700 ? kick_pool+0x5f/0x140 ? srso_alias_return_thunk+0x5/0xfbef5 ? __queue_work+0x12d/0x4f0 __sys_sendto+0x1f3/0x220 __x64_sys_sendto+0x24/0x30 do_syscall_64+0x101/0xf80 ? exc_page_fault+0x6e/0x170 ? srso_alias_return_thunk+0x5/0xfbef5 entry_SYSCALL_64_after_hwframe+0x77/0x7f </TASK>
Fix this by checking ipv6_mod_enabled() before dispatching IPv6 packets to bond_na_rcv(). If IPv6 is disabled, return early from bond_rcv_validate() and avoid the path to ipv6_chk_addr().
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | May 10, 2026 | May 10, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | May 8, 2026 |
| Ubuntu | — | Upgrade linux-image-generic-lpaeUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidiaUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-ibm-classicUpgrade linux-image-azure-lts-24.04Upgrade linux-image-ibmUpgrade linux-image-lowlatency-64kUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-6.8.0-1059-nvidia-64kUpgrade linux-image-6.8.0-1061-raspiUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-oracleUpgrade linux-image-nvidia-tegraUpgrade linux-image-fipsUpgrade linux-image-6.8.1-1056-realtimeUpgrade linux-image-generic-64kUpgrade linux-image-gkeop-6.8Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-6.8.0-1059-nvidia-lowlatencyUpgrade linux-image-6.8.0-1061-awsUpgrade linux-image-6.8.0-1064-gcp-fipsUpgrade linux-image-oem-22.04aUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-136-lowlatencyUpgrade linux-image-oem-20.04bUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1033-xilinxUpgrade linux-image-intel-iotgUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1046-gkeopUpgrade linux-image-gkeopUpgrade linux-image-6.8.0-1064-gcp-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.8.0-1058-oracleUpgrade linux-image-6.8.0-136-fipsUpgrade linux-image-genericUpgrade linux-image-lowlatency-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-6.8.0-1059-gkeUpgrade linux-image-6.8.0-1058-oracle-64kUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-virtualUpgrade linux-image-oem-22.04bUpgrade linux-image-generic-64k-6.8Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-1059-nvidiaUpgrade linux-image-oracle-6.8Upgrade linux-image-laptop-23.10Upgrade linux-image-kvmUpgrade linux-image-gcp-fipsUpgrade linux-image-gcp-6.8Upgrade linux-image-6.8.0-1059-nvidia-lowlatency-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-gcpUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1061-ibmUpgrade linux-image-virtual-6.8Upgrade linux-image-aws-64k-6.8Upgrade linux-image-oem-20.04Upgrade linux-image-gcp-64kUpgrade linux-image-raspiUpgrade linux-image-oracle-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-136-generic-64kUpgrade linux-image-6.8.0-136-genericUpgrade linux-image-6.8.0-1030-nvidia-tegra-rtUpgrade linux-image-xilinxUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-6.8.0-2050-raspi-realtimeUpgrade linux-image-nvidia-64kUpgrade linux-image-fips-6.8Upgrade linux-image-azure-fipsUpgrade linux-image-azure-fde-6.8Upgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-1061-aws-fipsUpgrade linux-image-oem-20.04cUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-gke-64k-6.8Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-awsUpgrade linux-image-oem-22.04dUpgrade linux-image-aws-fips-6.8Upgrade linux-image-6.8.0-1059-gke-64kUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-gke-64kUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-oem-22.04cUpgrade linux-image-raspi-realtimeUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-azureUpgrade linux-image-6.8.0-1063-azure-fipsUpgrade linux-image-gke-6.8Upgrade linux-image-oem-20.04dUpgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-136-lowlatency-64kUpgrade linux-image-6.8.0-1062-azure-fdeUpgrade linux-image-6.8.0-1061-aws-64kUpgrade linux-image-6.8.0-1063-azureUpgrade linux-image-realtimeUpgrade linux-image-ibm-6.8Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-1030-nvidia-tegraUpgrade linux-image-xilinx-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-raspi-6.8Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-aws-64kUpgrade linux-image-6.8.0-1064-gcpUpgrade linux-image-generic-6.8 | Jul 21, 2026 | Jul 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 6, 2026 | May 8, 2026 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub