In the Linux kernel, the following vulnerability has been resolved:
codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()
After making all ->qlen_notify() callbacks idempotent, now it is safe to remove the check of qlen!=0 from both fq_codel_dequeue() and codel_qdisc_dequeue().
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 kernel-livepatch-5.15.189-131.206Upgrade kernel-livepatch-5.10.240-238.959Upgrade kernel-toolsUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade python-perf-debuginfoUpgrade python-perfUpgrade bpftool-debuginfoUpgrade kernel-livepatch-4.14.355-280.664Upgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernelUpgrade bpftoolUpgrade perfUpgrade kernel-devel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-livepatch-6.12.25-32.101Upgrade kernel-libbpfUpgrade kernel-livepatch-6.1.140-154.222Upgrade kernel-develUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-tools-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade perf6.12-debuginfoUpgrade python3-perf6.12Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-libbpf-debuginfoUpgrade bpftoolUpgrade kernel-tools-develUpgrade perfUpgrade python3-perfUpgrade bpftool-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpf-staticUpgrade kernel-libbpf-develUpgrade kernel6.12-modules-extraUpgrade kernel6.12Upgrade perf6.12Upgrade kernel-modules-extra-commonUpgrade kernel-modules-extraUpgrade kernel6.12-debuginfoUpgrade kernel-toolsUpgrade kernelUpgrade kernel-headers | Jun 24, 2025 | May 2, 2025 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | May 5, 2025 | May 2, 2025 |
| Dell Powerstore Dsa2025429 | — | Upgrade Dell PowerStoreOS to the latest version | Dec 3, 2025 | Dec 2, 2025 |
| Dell Powerstore Dsa2026039 | — | Upgrade Dell PowerStoreOS to the latest version | Jan 13, 2026 | Jan 6, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade bpftoolUpgrade python3-perfUpgrade kernel | Oct 14, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel | Sep 15, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel-toolsUpgrade kernelUpgrade kernel-tools-libsUpgrade python3-perf | Oct 24, 2025 | Sep 9, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Oct 14, 2025 | May 2, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 2, 2025 |
| Suse | — | Upgrade kernel-default-livepatch-develUpgrade reiserfs-kmp-rtUpgrade kernel-kvmsmall-vdsoUpgrade kselftests-kmp-rtUpgrade kernel-default-baseUpgrade kernel-develUpgrade gfs2-kmp-azureUpgrade kernel-rt-vdsoUpgrade dtb-socionextUpgrade dtb-sprdUpgrade kernel-rt_debugUpgrade kernel-source-vanillaUpgrade dtb-alteraUpgrade dtb-caviumUpgrade dtb-renesasUpgrade kernel-azureUpgrade kernel-rt-optionalUpgrade reiserfs-kmp-azureUpgrade kernel-obs-buildUpgrade dtb-amdUpgrade kernel-64kb-extraUpgrade reiserfs-kmp-64kbUpgrade dtb-xilinxUpgrade dtb-allwinnerUpgrade dlm-kmp-defaultUpgrade ocfs2-kmp-azureUpgrade kselftests-kmp-azureUpgrade kernel-preempt-develUpgrade kernel-docsUpgrade kernel-rt-livepatchUpgrade reiserfs-kmp-defaultUpgrade kernel-default-optionalUpgrade kernel-source-rtUpgrade kselftests-kmp-defaultUpgrade cluster-md-kmp-64kbUpgrade kernel-debug-develUpgrade cluster-md-kmp-rtUpgrade dtb-rockchipUpgrade dlm-kmp-rtUpgrade kernel-debug-vdsoUpgrade kernel-rt-extraUpgrade kernel-rt_debug-develUpgrade gfs2-kmp-defaultUpgrade kernel-default-base-rebuildUpgrade kernel-defaultUpgrade dtb-nvidiaUpgrade ocfs2-kmp-defaultUpgrade kernel-zfcpdumpUpgrade dtb-exynosUpgrade kernel-rt_debug-vdsoUpgrade kernel-64kbUpgrade kernel-azure-vdsoUpgrade dtb-appleUpgrade cluster-md-kmp-azureUpgrade kernel-default-develUpgrade ocfs2-kmp-64kbUpgrade kernel-preemptUpgrade kernel-debugUpgrade kselftests-kmp-64kbUpgrade kernel-default-livepatchUpgrade ocfs2-kmp-rtUpgrade kernel-source-azureUpgrade kernel-rt-develUpgrade kernel-kvmsmallUpgrade kernel-default-vdsoUpgrade kernel-default-extraUpgrade gfs2-kmp-rtUpgrade dtb-hisiliconUpgrade dtb-amlogicUpgrade kernel-syms-azureUpgrade kernel-azure-develUpgrade dlm-kmp-64kbUpgrade kernel-rtUpgrade kernel-devel-rtUpgrade kernel-azure-optionalUpgrade kernel-rt-livepatch-develUpgrade kernel-symsUpgrade kernel-obs-qaUpgrade kernel-syms-rtUpgrade kernel-devel-azureUpgrade kernel-default-manUpgrade dtb-lgUpgrade dtb-freescaleUpgrade dlm-kmp-azureUpgrade dtb-marvellUpgrade kernel-kvmsmall-develUpgrade kernel-macrosUpgrade dtb-qcomUpgrade cluster-md-kmp-defaultUpgrade kernel-64kb-optionalUpgrade dtb-broadcomUpgrade kernel-docs-htmlUpgrade kernel-64kb-develUpgrade dtb-mediatekUpgrade dtb-armUpgrade dtb-apmUpgrade dtb-amazonUpgrade kernel-sourceUpgrade kernel-azure-extraUpgrade gfs2-kmp-64kb | Dec 5, 2025 | May 21, 2025 |
| Ubuntu | — | Upgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-5.15.0-1087-aws-64kUpgrade linux-image-kvm-5.4Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-5.4.0-1066-xilinx-zynqmpUpgrade linux-image-lowlatencyUpgrade linux-image-xilinx-zynqmp-5.4Upgrade linux-image-aws-lts-22.04Upgrade linux-image-ibmUpgrade linux-image-aws-64k-5.15Upgrade linux-image-virtual-hwe-16.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-oem-20.04Upgrade linux-image-awsUpgrade linux-image-gcp-6.11Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-oem-6.11Upgrade linux-image-5.4.0-1148-aws-fipsUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-5.15.0-1094-azure-fipsUpgrade linux-image-aws-hweUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-1027-gkeUpgrade linux-image-oracle-4.15Upgrade linux-image-lowlatency-6.8Upgrade linux-image-6.14.0-1007-oracle-64kUpgrade linux-image-generic-hwe-16.04Upgrade linux-image-5.4.0-1122-fipsUpgrade linux-image-azure-fde-edgeUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-bluefield-5.4Upgrade linux-image-6.11.0-1018-azureUpgrade linux-image-6.8.0-63-lowlatency-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-raspi-nolpaeUpgrade linux-image-azure-fipsUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-lowlatency-5.15Upgrade linux-image-5.15.0-1084-oracleUpgrade linux-image-gcp-5.15Upgrade linux-image-oem-22.04Upgrade linux-image-genericUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-gcp-6.8Upgrade linux-image-generic-5.4Upgrade linux-image-bluefieldUpgrade linux-image-6.8.0-1031-awsUpgrade linux-image-gcp-64k-6.11Upgrade linux-image-ibm-classicUpgrade linux-image-azure-lts-24.04Upgrade linux-image-6.14.0-1007-oracleUpgrade linux-image-6.14.0-1004-realtimeUpgrade linux-image-azure-fips-5.15Upgrade linux-image-azure-fde-6.8Upgrade linux-image-6.8.0-1019-azure-nvidiaUpgrade linux-image-aws-5.15Upgrade linux-image-5.15.0-143-genericUpgrade linux-image-oracle-lts-20.04Upgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-azure-5.4Upgrade linux-image-6.11.0-1017-gcpUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-oem-24.04bUpgrade linux-image-gke-5.15Upgrade linux-image-6.8.0-1030-raspiUpgrade linux-image-4.15.0-1190-azureUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-realtime-6.11Upgrade linux-image-5.4.0-1153-azureUpgrade linux-image-5.4.0-1148-awsUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-virtual-5.4Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-generic-lpaeUpgrade linux-image-ibm-5.4Upgrade linux-image-5.15.0-143-fipsUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.14.0-22-genericUpgrade linux-image-4.15.0-1165-kvmUpgrade linux-image-5.15.0-1029-nvidia-tegra-igx-rtUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.14.0-1007-awsUpgrade linux-image-nvidiaUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-snapdragon-5.4Upgrade linux-image-azure-fips-5.4Upgrade linux-image-6.11.0-1016-lowlatencyUpgrade linux-image-raspi-hwe-18.04Upgrade linux-image-6.8.0-64-genericUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-azure-cvmUpgrade linux-image-4.15.0-239-genericUpgrade linux-image-5.4.0-1131-raspiUpgrade linux-image-gcp-4.15Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-5.15.0-143-lowlatency-64kUpgrade linux-image-oracle-5.4Upgrade linux-image-6.11.0-1016-awsUpgrade linux-image-6.8.0-1032-gcpUpgrade linux-image-6.8.0-63-lowlatencyUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-6.11.0-1017-gcp-64kUpgrade linux-image-azure-fdeUpgrade linux-image-5.4.0-1094-ibmUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-raspi-6.11Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-ibm-5.15Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.14.0-1007-azure-fdeUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-5.15.0-1086-gcpUpgrade linux-image-4.15.0-239-lowlatencyUpgrade linux-image-aws-fipsUpgrade linux-image-6.11.0-1018-oracleUpgrade linux-image-gcp-fips-5.4Upgrade linux-image-5.15.0-1083-raspiUpgrade linux-image-5.4.0-1135-kvmUpgrade linux-image-oemUpgrade linux-image-6.14.0-1007-raspiUpgrade linux-image-5.15.0-1069-gkeopUpgrade linux-image-6.11.0-1012-realtimeUpgrade linux-image-5.4.0-219-lowlatencyUpgrade linux-image-6.8.0-1028-oracleUpgrade linux-image-azure-lts-20.04Upgrade linux-image-6.8.0-1031-aws-64kUpgrade linux-image-6.14.0-22-generic-64kUpgrade linux-image-aws-5.4Upgrade linux-image-aws-fips-5.4Upgrade linux-image-4.15.0-1137-fipsUpgrade linux-image-4.4.0-1115-fipsUpgrade linux-image-5.15.0-1040-nvidia-tegra-rtUpgrade linux-image-6.14.0-1008-gcp-64kUpgrade linux-image-5.15.0-1080-intel-iot-realtimeUpgrade linux-image-5.15.0-1094-azureUpgrade linux-image-generic-lts-xenialUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.11.0-29-genericUpgrade linux-image-oracleUpgrade linux-image-lowlatency-5.4Upgrade linux-image-6.8.0-1028-oracle-64kUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.11.0-1018-oracle-64kUpgrade linux-image-generic-5.15Upgrade linux-image-virtual-lts-xenialUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-5.15.0-1087-awsUpgrade linux-image-generic-64k-6.8Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-realtimeUpgrade linux-image-virtualUpgrade linux-image-5.15.0-143-generic-64kUpgrade linux-image-fipsUpgrade linux-image-gcp-lts-20.04Upgrade linux-image-azure-6.11Upgrade linux-image-6.8.0-1031-azureUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-6.11.0-1016-lowlatency-64kUpgrade linux-image-oem-22.04cUpgrade linux-image-5.15.0-1087-realtimeUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-5.15.0-1081-nvidiaUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-generic-6.11Upgrade linux-image-generic-64kUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-5.15.0-1087-aws-fipsUpgrade linux-image-raspi-5.15Upgrade linux-image-azureUpgrade linux-image-virtual-6.11Upgrade linux-image-5.15.0-1084-gkeUpgrade linux-image-5.15.0-1051-xilinx-zynqmpUpgrade linux-image-4.4.0-1183-awsUpgrade linux-image-4.15.0-1182-awsUpgrade linux-image-virtual-hwe-18.04Upgrade linux-image-raspi2Upgrade linux-image-oem-20.04cUpgrade linux-image-gkeop-5.15Upgrade linux-image-gke-6.8Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-aws-fips-5.15Upgrade linux-image-raspiUpgrade linux-image-realtime-6.8.1Upgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-oem-6.8Upgrade linux-image-oem-24.04aUpgrade linux-image-intelUpgrade linux-image-aws-4.15Upgrade linux-image-6.8.1-1024-realtimeUpgrade linux-image-6.8.0-1030-nvidia-lowlatencyUpgrade linux-image-5.4.0-219-generic-lpaeUpgrade linux-image-5.4.0-219-genericUpgrade linux-image-6.11.0-1018-azure-fdeUpgrade linux-image-5.15.0-1029-nvidia-tegra-igxUpgrade linux-image-4.4.0-270-lowlatencyUpgrade linux-image-azure-lts-22.04Upgrade linux-image-gkeopUpgrade linux-image-5.4.0-1107-bluefieldUpgrade linux-image-aws-64k-6.8Upgrade linux-image-4.15.0-1175-gcpUpgrade linux-image-6.8.0-63-genericUpgrade linux-image-5.4.0-1154-azure-fipsUpgrade linux-image-4.15.0-1144-oracleUpgrade linux-image-virtual-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-ibm-6.8Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-6.8.0-2025-raspi-realtimeUpgrade linux-image-4.4.0-270-genericUpgrade linux-image-6.14.0-1007-aws-64kUpgrade linux-image-generic-64k-6.11Upgrade linux-image-oracle-lts-18.04Upgrade linux-image-aws-6.8Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-oracle-5.15Upgrade linux-image-nvidia-tegraUpgrade linux-image-generic-lpae-5.4Upgrade linux-image-fips-5.15Upgrade linux-image-azure-6.8Upgrade linux-image-azure-4.15Upgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-oracle-6.11Upgrade linux-image-oem-22.04dUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-6.8.0-1030-nvidiaUpgrade linux-image-virtual-5.15Upgrade linux-image-6.8.0-63-generic-64kUpgrade linux-image-6.11.0-1015-raspiUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.14.0-1008-gcpUpgrade linux-image-kvmUpgrade linux-image-6.8.0-1030-oemUpgrade linux-image-azure-fde-6.11Upgrade linux-image-5.15.0-1082-intel-iotgUpgrade linux-image-6.8.0-1032-gcp-64kUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-gcp-64kUpgrade linux-image-intel-iotgUpgrade linux-image-6.11.0-29-generic-64kUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-azure-nvidiaUpgrade linux-image-5.4.0-1151-gcpUpgrade linux-image-5.15.0-1086-gcp-fipsUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-lowlatency-6.11Upgrade linux-image-5.15.0-1083-kvmUpgrade linux-image-5.15.0-1081-nvidia-lowlatencyUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1014-gkeopUpgrade linux-image-4.4.0-1145-awsUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-generic-6.8Upgrade linux-image-gkeUpgrade linux-image-gcp-lts-18.04Upgrade linux-image-aws-6.11Upgrade linux-image-nvidia-64kUpgrade linux-image-oem-20.04bUpgrade linux-image-oem-22.04bUpgrade linux-image-gcpUpgrade linux-image-oem-20.04dUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-5.15.0-1079-ibmUpgrade linux-image-4.15.0-2099-azure-fipsUpgrade linux-image-gcp-5.4Upgrade linux-image-5.4.0-1151-gcp-fipsUpgrade linux-image-aws-lts-18.04Upgrade linux-image-4.4.0-1146-kvmUpgrade linux-image-azure-5.15Upgrade linux-image-aws-64kUpgrade linux-image-6.11.0-1025-oemUpgrade linux-image-raspi-5.4Upgrade linux-image-oem-24.04Upgrade linux-image-oem-osp1Upgrade linux-image-nvidia-5.15Upgrade linux-image-gcp-fips-4.15Upgrade linux-image-5.15.0-1092-azureUpgrade linux-image-5.15.0-143-generic-lpaeUpgrade linux-image-5.15.0-143-lowlatencyUpgrade linux-image-5.4.0-1146-oracleUpgrade linux-image-4.15.0-2120-aws-fipsUpgrade linux-image-4.15.0-2083-gcp-fipsUpgrade linux-image-raspi-realtimeUpgrade linux-image-gcp-fipsUpgrade linux-image-6.8.0-1030-nvidia-64kUpgrade linux-image-6.8.0-1031-azure-fdeUpgrade linux-image-generic-64k-5.15Upgrade linux-image-fips-5.4Upgrade linux-image-6.8.0-1028-ibmUpgrade linux-image-aws-fips-4.15Upgrade linux-image-5.15.0-1040-nvidia-tegraUpgrade linux-image-6.14.0-1007-azureUpgrade linux-image-5.4.0-1052-iotUpgrade linux-image-kvm-5.15Upgrade linux-image-6.8.0-1030-nvidia-lowlatency-64kUpgrade linux-image-oracle-64k-6.11Upgrade linux-image-lowlatency-64k-6.11Upgrade linux-image-azure-lts-18.04Upgrade linux-image-aws-lts-20.04Upgrade linux-image-6.8.0-64-generic-64kUpgrade linux-image-azure-nvidia-6.8Upgrade linux-image-oracle-64k | Jun 26, 2025 | May 2, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | May 2, 2025 |
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