In the Linux kernel, the following vulnerability has been resolved:
netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels
IDLETIMER revision 0 rules reuse existing timers by label and always call mod_timer() on timer->timer.
If the label was created first by revision 1 with XT_IDLETIMER_ALARM, the object uses alarm timer semantics and timer->timer is never initialized. Reusing that object from revision 0 causes mod_timer() on an uninitialized timer_list, triggering debugobjects warnings and possible panic when panic_on_warn=1.
Fix this by rejecting revision 0 rule insertion when an existing timer with the same label is of ALARM type.
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 Ami 2 | — | Upgrade perfUpgrade kernel-toolsUpgrade kernel-develUpgrade kernel-headersUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade python-perfUpgrade kernel-livepatch-5.15.204-143.230Upgrade kernel-livepatch-5.10.253-252.1015Upgrade kernelUpgrade python-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade bpftoolUpgrade kernel-debuginfo-common-x86_64 | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade python3-perf6.18-debuginfoUpgrade kernel-livepatch-6.1.168-202.320Upgrade kernel-libbpf-develUpgrade kernel6.18Upgrade kernel6.18-tools-debuginfoUpgrade python3-perf-debuginfoUpgrade bpftool-debuginfoUpgrade perf6.12Upgrade python3-perf6.12Upgrade kernel6.12-develUpgrade kernel6.18-libbpf-staticUpgrade kernel-modules-extra-commonUpgrade kernel6.18-tools-develUpgrade kernel6.12-headersUpgrade kernel6.18-modules-extraUpgrade kernel6.12-toolsUpgrade kernelUpgrade bpftoolUpgrade kernel6.12-debuginfoUpgrade kernel-libbpf-staticUpgrade python3-perf6.12-debuginfoUpgrade python3-perf6.18Upgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.12-tools-develUpgrade kernel6.18-develUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.18-libbpf-debuginfoUpgrade perf6.18Upgrade bpftool6.18Upgrade kernel6.12-libbpfUpgrade kernel6.18-modules-extra-commonUpgrade kernel-debuginfo-common-x86_64Upgrade kernel6.12-libbpf-staticUpgrade kernel-develUpgrade python3-perfUpgrade perf6.18-debuginfoUpgrade perf-debuginfoUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel-libbpf-debuginfoUpgrade kernel6.18-headersUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.18-libbpfUpgrade kernel-debuginfoUpgrade kernel6.18-toolsUpgrade kernel-libbpfUpgrade kernel-headersUpgrade kernel-debuginfo-common-aarch64Upgrade bpftool6.18-debuginfoUpgrade bpftool6.12-debuginfoUpgrade bpftool6.12Upgrade kernel-toolsUpgrade kernel-livepatch-6.12.79-101.147Upgrade kernel6.12Upgrade kernel-tools-debuginfoUpgrade perfUpgrade kernel-modules-extraUpgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.18-libbpf-develUpgrade kernel6.12-libbpf-develUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.18-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel6.12-modules-extraUpgrade kernel-tools-develUpgrade kernel-livepatch-6.18.20-20.229 | May 4, 2026 | Mar 20, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | May 3, 2026 | May 3, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Mar 20, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1055-aws-fipsUpgrade linux-image-5.15.0-1104-oracleUpgrade linux-image-oracleUpgrade linux-image-raspi-nolpaeUpgrade linux-image-xilinx-6.8Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-virtual-5.15Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1060-nvidia-tegra-rtUpgrade linux-image-azure-fipsUpgrade linux-image-aws-fips-6.8Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-6.17.0-1018-gcp-64kUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-kvmUpgrade linux-image-5.15.0-1108-gcpUpgrade linux-image-azureUpgrade linux-image-realtime-hwe-24.04-edgeUpgrade linux-image-5.15.0-1049-nvidia-tegra-igx-rtUpgrade linux-image-5.15.0-178-lowlatency-64kUpgrade linux-image-6.8.0-1054-nvidiaUpgrade linux-image-5.15.0-1105-oracleUpgrade linux-image-5.15.0-1108-aws-64kUpgrade linux-image-5.15.0-1102-raspiUpgrade linux-image-oracle-5.15Upgrade linux-image-virtual-6.8Upgrade linux-image-gke-64kUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-6.8.0-116-fipsUpgrade linux-image-5.15.0-1091-gkeopUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-raspi-6.8Upgrade linux-image-6.8.0-1055-aws-64kUpgrade linux-image-6.8.0-1055-ibmUpgrade linux-image-6.8.0-117-genericUpgrade linux-image-6.8.0-1032-xilinxUpgrade linux-image-6.8.0-1058-gcp-64kUpgrade linux-image-6.17.0-1026-nvidia-64kUpgrade linux-image-6.8.0-117-lowlatencyUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-oracle-64k-6.17Upgrade linux-image-5.15.0-1108-awsUpgrade linux-image-gcp-5.15Upgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-gke-5.15Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-generic-64k-6.8Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-generic-64k-5.15Upgrade linux-image-5.15.0-1103-nvidia-lowlatencyUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-5.15.0-1107-realtimeUpgrade linux-image-aws-fipsUpgrade linux-image-5.15.0-1114-azure-fipsUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-aws-fips-5.15Upgrade linux-image-gkeop-5.15Upgrade linux-image-azure-cvmUpgrade linux-image-oracle-6.17Upgrade linux-image-raspiUpgrade linux-image-oem-6.17Upgrade linux-image-5.15.0-1103-intel-iotgUpgrade linux-image-6.8.1-1051-realtimeUpgrade linux-image-gcp-6.8Upgrade linux-image-gcp-64k-6.17Upgrade linux-image-5.15.0-1104-gkeUpgrade linux-image-gcp-64kUpgrade linux-image-awsUpgrade linux-image-nvidia-64k-6.17Upgrade linux-image-5.15.0-1108-aws-fipsUpgrade linux-image-generic-lpaeUpgrade linux-image-aws-64k-6.17Upgrade linux-image-6.8.0-1058-gcp-fipsUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-6.8.0-1041-gkeopUpgrade linux-image-oem-24.04bUpgrade linux-image-6.8.0-1058-gcpUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-fipsUpgrade linux-image-6.17.0-1015-azureUpgrade linux-image-aws-6.8Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-aws-64k-5.15Upgrade linux-image-6.17.0-1017-raspiUpgrade linux-image-5.15.0-1060-nvidia-tegraUpgrade linux-image-lowlatency-6.8Upgrade linux-image-gcp-6.17Upgrade linux-image-5.15.0-1074-xilinx-zynqmpUpgrade linux-image-ibmUpgrade linux-image-5.15.0-1114-azureUpgrade linux-image-ibm-5.15Upgrade linux-image-nvidia-6.17Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-5.15.0-179-fipsUpgrade linux-image-gcp-fipsUpgrade linux-image-azure-lts-24.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-generic-5.15Upgrade linux-image-generic-64k-6.17Upgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-2045-raspi-realtimeUpgrade linux-image-azure-lts-22.04Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-gkeopUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-5.15.0-1108-gcp-fipsUpgrade linux-image-generic-64kUpgrade linux-image-aws-64kUpgrade linux-image-aws-6.17Upgrade linux-image-6.8.0-1055-awsUpgrade linux-image-6.8.0-1024-nvidia-tegraUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-genericUpgrade linux-image-5.15.0-178-lowlatencyUpgrade linux-image-nvidia-64kUpgrade linux-image-lowlatency-5.15Upgrade linux-image-generic-6.17Upgrade linux-image-6.8.0-1059-azure-fipsUpgrade linux-image-6.8.0-1054-nvidia-lowlatencyUpgrade linux-image-5.15.0-1099-intel-iot-realtimeUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-realtime-5.15Upgrade linux-image-oem-24.04aUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-fips-6.8Upgrade linux-image-6.17.0-1017-awsUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-raspi-realtimeUpgrade linux-image-6.8.0-1059-azureUpgrade linux-image-gke-6.8Upgrade linux-image-azure-6.8Upgrade linux-image-6.17.0-29-genericUpgrade linux-image-6.17.0-1018-gcpUpgrade linux-image-5.15.0-1103-nvidiaUpgrade linux-image-5.15.0-1100-kvmUpgrade linux-image-xilinxUpgrade linux-image-nvidia-hwe-24.04Upgrade linux-image-6.8.0-1024-nvidia-tegra-rtUpgrade linux-image-6.8.0-1054-gkeUpgrade linux-image-5.15.0-1049-nvidia-tegra-igxUpgrade linux-image-oracle-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-azure-fips-5.15Upgrade linux-image-6.17.0-1013-realtimeUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-5.15.0-1102-ibmUpgrade linux-image-6.17.0-1023-oemUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-nvidia-64k-hwe-24.04Upgrade linux-image-aws-5.15Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-kvm-5.15Upgrade linux-image-realtime-6.17Upgrade linux-image-oem-20.04cUpgrade linux-image-6.8.0-117-lowlatency-64kUpgrade linux-image-6.8.0-1054-nvidia-64kUpgrade linux-image-6.17.0-1017-aws-64kUpgrade linux-image-6.8.0-1056-azureUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.17.0-1014-oracleUpgrade linux-image-oem-20.04dUpgrade linux-image-6.8.0-1054-gke-64kUpgrade linux-image-6.8.0-1054-nvidia-lowlatency-64kUpgrade linux-image-6.17.0-1014-oracle-64kUpgrade linux-image-lowlatencyUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-gkeUpgrade linux-image-gcpUpgrade linux-image-6.8.0-117-generic-64kUpgrade linux-image-5.15.0-179-generic-64kUpgrade linux-image-virtualUpgrade linux-image-oem-24.04dUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-5.15.0-179-genericUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-lowlatency-64kUpgrade linux-image-oem-20.04bUpgrade linux-image-oem-24.04cUpgrade linux-image-nvidia-tegraUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-azure-6.17Upgrade linux-image-virtual-6.17Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-gke-64k-6.8Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-generic-6.8Upgrade linux-image-fips-5.15Upgrade linux-image-azure-fips-6.8Upgrade linux-image-aws-lts-22.04Upgrade linux-image-6.17.0-29-generic-64kUpgrade linux-image-6.17.0-1026-nvidiaUpgrade linux-image-6.17.0-1015-aws-64kUpgrade linux-image-5.15.0-179-generic-lpaeUpgrade linux-image-raspi-6.17Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-oem-24.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-ibm-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-6.8.0-1056-raspiUpgrade linux-image-6.17.0-1015-awsUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-intelUpgrade linux-image-azure-5.15Upgrade linux-image-realtimeUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-raspi-5.15Upgrade linux-image-oem-20.04Upgrade linux-image-nvidia-5.15Upgrade linux-image-nvidiaUpgrade linux-image-gkeop-6.8Upgrade linux-image-aws-64k-6.8 | May 25, 2026 | May 19, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Mar 20, 2026 |
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