In the Linux kernel, the following vulnerability has been resolved:
net: ipv4: fix one memleak in __inet_del_ifa()
I got the below warning when do fuzzing test: unregister_netdevice: waiting for bond0 to become free. Usage count = 2
It can be repoduced via:
ip link add bond0 type bond sysctl -w net.ipv4.conf.bond0.promote_secondaries=1 ip addr add 4.117.174.103/0 scope 0x40 dev bond0 ip addr add 192.168.100.111/255.255.255.254 scope 0 dev bond0 ip addr add 0.0.0.4/0 scope 0x40 secondary dev bond0 ip addr del 4.117.174.103/0 scope 0x40 dev bond0 ip link delete bond0 type bond
In this reproduction test case, an incorrect 'last_prim' is found in __inet_del_ifa(), as a result, the secondary address(0.0.0.4/0 scope 0x40) is lost. The memory of the secondary address is leaked and the reference of in_device and net_device is leaked.
Fix this problem: Look for 'last_prim' starting at location of the deleted IP and inserting the promoted IP into the location of 'last_prim'.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade kernel-develUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.15.133-86.144Upgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernel-livepatch-5.10.196-185.743Upgrade python-perfUpgrade bpftool-debuginfoUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-headers | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-tools-debuginfoUpgrade kernel-libbpfUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perf-debuginfoUpgrade kernel-livepatch-6.1.55-75.123Upgrade kernel-libbpf-staticUpgrade python3-perfUpgrade perfUpgrade kernel-toolsUpgrade kernel-tools-develUpgrade kernel-develUpgrade bpftoolUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpf-develUpgrade kernelUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade perf-debuginfo | Feb 20, 2026 | Dec 24, 2025 |
| Debian | — | Upgrade linux | Dec 29, 2025 | Dec 29, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade bpftoolUpgrade python3-perf | Mar 10, 2026 | Mar 10, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 24, 2025 |
| Ubuntu | — | Upgrade linux-bluefieldUpgrade linux-iotUpgrade linux-awsUpgrade linuxUpgrade linux-lowlatency-hwe-5.15Upgrade linux-raspi-5.4Upgrade linux-nvidia-tegraUpgrade linux-raspiUpgrade linux-aws-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-oracle-5.4Upgrade linux-ibm-5.4Upgrade linux-hwe-5.4Upgrade linux-realtimeUpgrade linux-azure-5.15Upgrade linux-gcp-5.4Upgrade linux-gkeopUpgrade linux-oracleUpgrade linux-lowlatencyUpgrade linux-xilinx-zynqmpUpgrade linux-azure-5.4Upgrade linux-azure-fipsUpgrade linux-kvmUpgrade linux-azureUpgrade linux-ibmUpgrade linux-gcp-5.15Upgrade linux-intel-iotgUpgrade linux-intel-iotg-5.15Upgrade linux-oracle-5.15Upgrade linux-fipsUpgrade linux-nvidiaUpgrade linux-ibm-5.15Upgrade linux-gcpUpgrade linux-gkeUpgrade linux-aws-fipsUpgrade linux-nvidia-tegra-igxUpgrade linux-gcp-fipsUpgrade linux-aws-5.4Upgrade linux-riscv-5.15Upgrade linux-hwe-5.15Upgrade linux-intel-iot-realtime | Jan 6, 2026 | Dec 24, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 24, 2025 |
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