In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: double hook unregistration in netns path
__nft_release_hooks() is called from pre_netns exit path which unregisters the hooks, then the NETDEV_UNREGISTER event is triggered which unregisters the hooks again.
[ 565.221461] WARNING: CPU: 18 PID: 193 at net/netfilter/core.c:495 __nf_unregister_net_hook+0x247/0x270 [...] [ 565.246890] CPU: 18 PID: 193 Comm: kworker/u64:1 Tainted: G E 5.18.0-rc7+ #27 [ 565.253682] Workqueue: netns cleanup_net [ 565.257059] RIP: 0010:__nf_unregister_net_hook+0x247/0x270 [...] [ 565.297120] Call Trace: [ 565.300900] <TASK> [ 565.304683] nf_tables_flowtable_event+0x16a/0x220 [nf_tables] [ 565.308518] raw_notifier_call_chain+0x63/0x80 [ 565.312386] unregister_netdevice_many+0x54f/0xb50
Unregister and destroy netdev hook from netns pre_exit via kfree_rcu so the NETDEV_UNREGISTER path see unregistered hooks.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.10.198-187.748Upgrade kernel-toolsUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade python-perfUpgrade perf-debuginfoUpgrade kernel-develUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.15.50-23.125Upgrade kernel-headersUpgrade kernel-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-tools-devel | May 22, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernelUpgrade python3-perfUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade bpftool | Oct 24, 2025 | Oct 23, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-azure-fipsUpgrade linux-gkeUpgrade linux-aws-5.15Upgrade linux-awsUpgrade linux-gcp-5.4Upgrade linux-lowlatencyUpgrade linux-gcpUpgrade linux-oracle-5.4Upgrade linux-ibm-5.4Upgrade linuxUpgrade linux-oracleUpgrade linux-iotUpgrade linux-intel-iotg-5.15Upgrade linux-nvidiaUpgrade linux-gkeopUpgrade linux-riscv-5.15Upgrade linux-ibmUpgrade linux-xilinx-zynqmpUpgrade linux-fipsUpgrade linux-hwe-5.4Upgrade linux-bluefieldUpgrade linux-hwe-5.15Upgrade linux-raspiUpgrade linux-aws-5.4Upgrade linux-raspi-5.4Upgrade linux-gcp-fipsUpgrade linux-lowlatency-hwe-5.15Upgrade linux-aws-fipsUpgrade linux-azure-5.4Upgrade linux-intel-iotgUpgrade linux-azure-5.15Upgrade linux-realtimeUpgrade linux-oracle-5.15Upgrade linux-kvmUpgrade linux-azureUpgrade linux-gcp-5.15 | Mar 19, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
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