In the Linux kernel, the following vulnerability has been resolved:
ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()
ipv4_sysctl_exit_net() is currently freeing net->ipv4.sysctl_local_reserved_ports too soon.
Only after unregister_net_sysctl_table() we can be sure no threads can possibly use the sysctls, including /proc/sys/net/ipv4/ip_local_reserved_ports.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.18-headersUpgrade kernel6.18-toolsUpgrade kernel6.12-toolsUpgrade kernel6.18-modules-extraUpgrade kernel6.18-develUpgrade kernel6.12-debuginfoUpgrade bpftool6.18-debuginfoUpgrade kernel6.18-debuginfoUpgrade bpftool6.12Upgrade kernel6.12-tools-debuginfoUpgrade kernel6.18-debuginfo-common-x86_64Upgrade python3-perf6.12-debuginfoUpgrade kernel-livepatch-6.12.94-123.174Upgrade perf6.12-debuginfoUpgrade microvm-kernel6.18Upgrade kernel6.18-tools-develUpgrade kernel6.12-modules-extraUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.12-develUpgrade bpftool6.12-debuginfoUpgrade kernel6.18Upgrade kernel6.18-modules-extra-commonUpgrade kernel6.18-debuginfo-common-aarch64Upgrade python3-perf6.18Upgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12Upgrade kernel6.12-headersUpgrade python3-perf6.18-debuginfoUpgrade python3-perf6.12Upgrade perf6.18-debuginfoUpgrade perf6.18Upgrade kernel-livepatch-6.18.35-68.127Upgrade perf6.12Upgrade kernel6.12-tools-develUpgrade bpftool6.18Upgrade kernel6.12-debuginfo-common-aarch64 | Aug 18, 2026 | Jul 19, 2026 |
| Debian | — | Upgrade linux | Jul 20, 2026 | Jul 20, 2026 |
| Redhat_linux | — | Upgrade kernel-rtNo solution existsUpgrade kernel | Jul 23, 2026 | Jul 19, 2026 |
| Rocky_linux | — | Upgrade kernel-rt-develUpgrade kernel-rt-debug-debuginfoUpgrade kernel-debugUpgrade kernel-debug-coreUpgrade kernel-tools-libsUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-modules-extra-matchedUpgrade kernel-rt-kvmUpgrade kernel-modules-coreUpgrade kernel-zfcpdump-develUpgrade kernel-rt-debug-kvmUpgrade kernel-debug-modulesUpgrade kernel-debug-uki-virtUpgrade bpftool-debuginfoUpgrade kernel-uki-virtUpgrade bpftoolUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-coreUpgrade python3-perf-debuginfoUpgrade kernel-rt-debug-coreUpgrade kernel-rt-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debug-modulesUpgrade kernel-modules-extraUpgrade kernel-modulesUpgrade kernel-debug-debuginfoUpgrade kernel-debug-modules-coreUpgrade kernel-debuginfoUpgrade rtlaUpgrade kernel-rt-debugUpgrade kernel-debug-develUpgrade kernelUpgrade kernel-rt-debug-develUpgrade kernel-develUpgrade kernel-zfcpdumpUpgrade kernel-tools-debuginfoUpgrade python3-perfUpgrade perfUpgrade kernel-tools-libs-develUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-uki-virt-addonsUpgrade kernel-rt-modulesUpgrade kernel-devel-matchedUpgrade kernel-debuginfo-common-s390xUpgrade libperfUpgrade kernel-rt-debug-modules-coreUpgrade kernel-debug-devel-matchedUpgrade perf-debuginfoUpgrade kernel-zfcpdump-coreUpgrade libperf-debuginfoUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debuginfoUpgrade kernel-rt-modules-coreUpgrade kernel-toolsUpgrade kernel-rtUpgrade rvUpgrade kernel-zfcpdump-modules | Sep 7, 2026 | Sep 5, 2026 |
| Ubuntu | — | Upgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-5.15.0-1123-azureUpgrade linux-image-5.15.0-195-lowlatencyUpgrade linux-image-aws-fips-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-nvidia-tegraUpgrade linux-image-intelUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-genericUpgrade linux-image-5.15.0-1109-kvmUpgrade linux-image-aws-5.15Upgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-lowlatency-5.15Upgrade linux-image-raspi-realtime-7.0Upgrade linux-image-oem-20.04Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.15.0-198-genericUpgrade linux-image-gkeUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-gkeopUpgrade linux-image-5.15.0-198-generic-lpaeUpgrade linux-image-5.15.0-198-generic-64kUpgrade linux-image-aws-64k-7.0Upgrade linux-image-5.15.0-1111-ibmUpgrade linux-image-7.0.0-1010-azureUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-oem-20.04cUpgrade linux-image-lowlatencyUpgrade linux-image-5.15.0-1116-realtimeUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-generic-5.15Upgrade linux-image-gkeop-5.15Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-5.15.0-1117-aws-64kUpgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-azure-fde-5.15Upgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-7.0.0-1014-azureUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-virtualUpgrade linux-image-5.15.0-1117-awsUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-5.15.0-1113-gkeUpgrade linux-image-fipsUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-oem-20.04bUpgrade linux-image-gcp-64kUpgrade linux-image-azure-fde-7.0Upgrade linux-image-azure-lts-22.04Upgrade linux-image-ibm-7.0Upgrade linux-image-kvm-5.15Upgrade linux-image-generic-lpaeUpgrade linux-image-intel-iotgUpgrade linux-image-generic-64kUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-5.15.0-1100-gkeopUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-5.15.0-1118-gcp-fipsUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-aws-64kUpgrade linux-image-azure-fips-5.15Upgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-aws-7.0Upgrade linux-image-lowlatency-64kUpgrade linux-image-nvidiaUpgrade linux-image-aws-fipsUpgrade linux-image-5.15.0-1114-oracleUpgrade linux-image-ibm-5.15Upgrade linux-image-realtimeUpgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-nvidia-bosUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-gcpUpgrade linux-image-azureUpgrade linux-image-awsUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-azure-cvmUpgrade linux-image-aws-lts-22.04Upgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-5.15.0-1080-xilinx-zynqmpUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-realtime-5.15Upgrade linux-image-nvidia-7.0Upgrade linux-image-5.15.0-1117-aws-fipsUpgrade linux-image-generic-64k-5.15Upgrade linux-image-gcp-5.15Upgrade linux-image-azure-fipsUpgrade linux-image-oracle-5.15Upgrade linux-image-gke-5.15Upgrade linux-image-azure-5.15Upgrade linux-image-7.0.0-1009-awsUpgrade linux-image-virtual-5.15Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-gcp-7.0Upgrade linux-image-oracleUpgrade linux-image-raspi-realtimeUpgrade linux-image-raspiUpgrade linux-image-oracle-64kUpgrade linux-image-nvidia-64kUpgrade linux-image-kvmUpgrade linux-image-fips-5.15Upgrade linux-image-azure-7.0Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-oracle-7.0Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-aws-64k-5.15Upgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-6.8.0-1036-nvidia-tegraUpgrade linux-image-oem-20.04dUpgrade linux-image-5.15.0-1123-azure-fipsUpgrade linux-image-raspi-7.0Upgrade linux-image-5.15.0-1118-gcpUpgrade linux-image-5.15.0-198-fipsUpgrade linux-image-5.15.0-1122-azure-fdeUpgrade linux-image-6.8.0-1036-nvidia-tegra-rtUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.15.0-195-lowlatency-64kUpgrade linux-image-gcp-fipsUpgrade linux-image-5.15.0-1109-intel-iot-realtimeUpgrade linux-image-5.15.0-1112-intel-iotgUpgrade linux-image-ibmUpgrade linux-image-azure-fdeUpgrade linux-image-7.0.0-1015-raspi-realtime | Jul 21, 2026 | Jul 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 27, 2026 | Jul 19, 2026 |
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