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-develUpgrade bpftoolUpgrade kernelUpgrade perfUpgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade python-perfUpgrade kernel-livepatch-5.10.240-238.959Upgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.15.189-131.206Upgrade kernel-toolsUpgrade kernel-headersUpgrade bpftool-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel6.12-debuginfo-common-x86_64Upgrade perf6.12-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-libbpf-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-libbpfUpgrade python3-perf6.12Upgrade kernel-livepatch-6.1.140-154.222Upgrade python3-perfUpgrade perfUpgrade kernel-tools-develUpgrade kernel-livepatch-6.12.25-32.101Upgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-libbpf-develUpgrade kernel-toolsUpgrade kernel6.12-debuginfoUpgrade kernel-modules-extra-commonUpgrade kernel-debuginfo-common-x86_64Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-libbpf-staticUpgrade kernelUpgrade kernel6.12Upgrade python3-perf-debuginfoUpgrade kernel6.12-modules-extraUpgrade perf6.12Upgrade kernel-modules-extra | 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 python3-perfUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade bpftool | Oct 14, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-abi-stablelistsUpgrade kernelUpgrade python3-perfUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-tools | Sep 15, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernelUpgrade 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-kvmsmall-develUpgrade kernel-rt_debug-vdsoUpgrade dtb-exynosUpgrade kernel-azure-extraUpgrade dtb-amazonUpgrade kernel-preemptUpgrade kselftests-kmp-64kbUpgrade kernel-sourceUpgrade kernel-azure-develUpgrade kernel-rtUpgrade kernel-syms-azureUpgrade dlm-kmp-64kbUpgrade dtb-armUpgrade dtb-mediatekUpgrade kernel-64kb-optionalUpgrade kernel-default-manUpgrade dtb-broadcomUpgrade kernel-devel-rtUpgrade cluster-md-kmp-azureUpgrade kernel-64kb-develUpgrade kernel-zfcpdumpUpgrade dlm-kmp-azureUpgrade dtb-marvellUpgrade kernel-azure-optionalUpgrade kernel-symsUpgrade kernel-obs-qaUpgrade kernel-devel-azureUpgrade ocfs2-kmp-rtUpgrade kernel-rt-livepatch-develUpgrade dtb-freescaleUpgrade gfs2-kmp-rtUpgrade kernel-default-extraUpgrade dtb-hisiliconUpgrade kernel-kvmsmallUpgrade dtb-appleUpgrade kernel-azure-vdsoUpgrade kernel-default-vdsoUpgrade kernel-source-azureUpgrade kernel-macrosUpgrade kernel-syms-rtUpgrade kernel-default-develUpgrade ocfs2-kmp-64kbUpgrade dtb-amlogicUpgrade dtb-lgUpgrade gfs2-kmp-64kbUpgrade kernel-rt-develUpgrade cluster-md-kmp-defaultUpgrade dtb-qcomUpgrade kernel-docs-htmlUpgrade kernel-64kbUpgrade dtb-apmUpgrade kernel-debugUpgrade kernel-default-livepatchUpgrade kernel-default-baseUpgrade kernel-rt-vdsoUpgrade reiserfs-kmp-azureUpgrade kernel-source-rtUpgrade kernel-rt_debug-develUpgrade gfs2-kmp-azureUpgrade kernel-develUpgrade kernel-source-vanillaUpgrade kernel-rt_debugUpgrade dtb-sprdUpgrade kernel-rt-livepatchUpgrade kernel-docsUpgrade kernel-default-base-rebuildUpgrade kselftests-kmp-azureUpgrade dtb-xilinxUpgrade dtb-rockchipUpgrade kernel-64kb-extraUpgrade dtb-allwinnerUpgrade reiserfs-kmp-defaultUpgrade reiserfs-kmp-64kbUpgrade kernel-obs-buildUpgrade kernel-default-livepatch-develUpgrade reiserfs-kmp-rtUpgrade ocfs2-kmp-azureUpgrade kernel-rt-optionalUpgrade kernel-preempt-develUpgrade kernel-default-optionalUpgrade dtb-amdUpgrade dlm-kmp-defaultUpgrade kernel-debug-develUpgrade dtb-renesasUpgrade dtb-caviumUpgrade dtb-alteraUpgrade dlm-kmp-rtUpgrade dtb-nvidiaUpgrade gfs2-kmp-defaultUpgrade dtb-socionextUpgrade ocfs2-kmp-defaultUpgrade cluster-md-kmp-rtUpgrade kselftests-kmp-rtUpgrade kernel-kvmsmall-vdsoUpgrade kernel-azureUpgrade kernel-debug-vdsoUpgrade kernel-rt-extraUpgrade kselftests-kmp-defaultUpgrade kernel-defaultUpgrade cluster-md-kmp-64kb | Dec 5, 2025 | May 21, 2025 |
| Ubuntu | — | Upgrade linux-image-6.11.0-1012-realtimeUpgrade linux-image-6.11.0-1018-azureUpgrade linux-image-xilinx-zynqmp-5.4Upgrade linux-image-5.15.0-1094-azure-fipsUpgrade linux-image-6.11.0-1018-oracleUpgrade linux-image-virtualUpgrade linux-image-virtual-hwe-16.04Upgrade linux-image-6.8.0-1031-azureUpgrade linux-image-aws-5.4Upgrade linux-image-6.8.0-1027-gkeUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-ibmUpgrade linux-image-bluefield-5.4Upgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-aws-fips-5.4Upgrade linux-image-aws-lts-22.04Upgrade linux-image-azure-lts-20.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-5.4.0-1094-ibmUpgrade linux-image-6.11.0-1016-lowlatencyUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-raspi-hwe-18.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-azure-fde-edgeUpgrade linux-image-oem-6.11Upgrade linux-image-ibm-5.4Upgrade linux-image-5.15.0-143-fipsUpgrade linux-image-generic-hwe-16.04Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-5.4.0-1122-fipsUpgrade linux-image-6.14.0-1007-oracleUpgrade linux-image-aws-64k-5.15Upgrade linux-image-6.14.0-1007-awsUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-genericUpgrade linux-image-5.15.0-1087-aws-64kUpgrade linux-image-gcp-6.8Upgrade linux-image-5.15.0-1029-nvidia-tegra-igx-rtUpgrade linux-image-4.15.0-1165-kvmUpgrade linux-image-oracle-lts-20.04Upgrade linux-image-6.8.0-64-genericUpgrade linux-image-generic-64k-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-5.15.0-1087-awsUpgrade linux-image-6.8.0-1019-azure-nvidiaUpgrade linux-image-azure-5.4Upgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-6.8.0-1028-oracle-64kUpgrade linux-image-virtual-lts-xenialUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-realtimeUpgrade linux-image-5.15.0-1069-gkeopUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-oracle-5.4Upgrade linux-image-5.15.0-143-generic-64kUpgrade linux-image-4.4.0-1115-fipsUpgrade linux-image-5.15.0-1040-nvidia-tegra-rtUpgrade linux-image-4.15.0-1137-fipsUpgrade linux-image-5.15.0-1094-azureUpgrade linux-image-oem-20.04Upgrade linux-image-5.15.0-1080-intel-iot-realtimeUpgrade linux-image-6.14.0-22-generic-64kUpgrade linux-image-awsUpgrade linux-image-5.15.0-143-lowlatency-64kUpgrade linux-image-5.4.0-1131-raspiUpgrade linux-image-6.8.0-1031-aws-64kUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-kvm-5.4Upgrade linux-image-5.15.0-1083-raspiUpgrade linux-image-5.4.0-219-lowlatencyUpgrade linux-image-oracleUpgrade linux-image-ibm-classicUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.11.0-1017-gcp-64kUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-5.4.0-1148-aws-fipsUpgrade linux-image-6.8.0-1032-gcpUpgrade linux-image-5.15.0-1086-gcpUpgrade linux-image-azure-fipsUpgrade linux-image-6.11.0-1018-oracle-64kUpgrade linux-image-6.8.0-63-lowlatencyUpgrade linux-image-6.14.0-1008-gcp-64kUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-oemUpgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-6.8.0-1028-oracleUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-snapdragon-5.4Upgrade linux-image-5.15.0-1084-oracleUpgrade linux-image-aws-hweUpgrade linux-image-6.11.0-1016-awsUpgrade linux-image-generic-5.15Upgrade linux-image-5.4.0-1135-kvmUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.14.0-1007-raspiUpgrade linux-image-6.14.0-1007-oracle-64kUpgrade linux-image-6.8.0-63-lowlatency-64kUpgrade linux-image-nvidia-6.8Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.14.0-1007-azure-fdeUpgrade linux-image-6.11.0-29-genericUpgrade linux-image-4.15.0-239-genericUpgrade linux-image-azure-fdeUpgrade linux-image-raspi-6.11Upgrade linux-image-gcp-4.15Upgrade linux-image-lowlatency-64kUpgrade linux-image-fipsUpgrade linux-image-azure-6.11Upgrade linux-image-gcp-lts-20.04Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-raspi-nolpaeUpgrade linux-image-lowlatency-5.15Upgrade linux-image-azure-cvmUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-azure-fips-5.15Upgrade linux-image-lowlatency-6.8Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-generic-lts-xenialUpgrade linux-image-5.4.0-1066-xilinx-zynqmpUpgrade linux-image-nvidiaUpgrade linux-image-bluefieldUpgrade linux-image-generic-5.4Upgrade linux-image-4.15.0-1190-azureUpgrade linux-image-6.14.0-1004-realtimeUpgrade linux-image-lowlatency-5.4Upgrade linux-image-lowlatencyUpgrade linux-image-oem-24.04bUpgrade linux-image-realtime-6.11Upgrade linux-image-oem-22.04Upgrade linux-image-virtual-5.4Upgrade linux-image-5.15.0-143-genericUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-gke-5.15Upgrade linux-image-gkeop-6.8Upgrade linux-image-generic-lpaeUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-aws-5.15Upgrade linux-image-azure-fips-5.4Upgrade linux-image-gcp-5.15Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-6.8.0-1031-awsUpgrade linux-image-6.14.0-22-genericUpgrade linux-image-4.15.0-239-lowlatencyUpgrade linux-image-6.8.0-1030-raspiUpgrade linux-image-oracle-4.15Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-aws-fipsUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-gcp-6.11Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-azure-fde-6.8Upgrade linux-image-6.11.0-1017-gcpUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-gcp-64k-6.11Upgrade linux-image-ibm-5.15Upgrade linux-image-5.4.0-1148-awsUpgrade linux-image-gcp-fips-5.4Upgrade linux-image-5.4.0-1153-azureUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-azure-lts-22.04Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-generic-lpae-5.4Upgrade linux-image-fips-5.15Upgrade linux-image-6.8.0-64-generic-64kUpgrade linux-image-6.8.0-1030-nvidia-lowlatency-64kUpgrade linux-image-5.4.0-1151-gcp-fipsUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-6.8.0-1032-gcp-64kUpgrade linux-image-5.15.0-143-generic-lpaeUpgrade linux-image-5.4.0-1146-oracleUpgrade linux-image-aws-4.15Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-1030-nvidia-lowlatencyUpgrade linux-image-lowlatency-64k-6.11Upgrade linux-image-gkeopUpgrade linux-image-gcp-fipsUpgrade linux-image-fips-5.4Upgrade linux-image-azure-lts-18.04Upgrade linux-image-aws-fips-4.15Upgrade linux-image-6.8.0-1031-azure-fdeUpgrade linux-image-6.8.0-1030-nvidia-64kUpgrade linux-image-5.15.0-1087-aws-fipsUpgrade linux-image-5.15.0-1082-intel-iotgUpgrade linux-image-6.8.0-1028-ibmUpgrade linux-image-5.15.0-1040-nvidia-tegraUpgrade linux-image-raspi-5.15Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-azure-nvidiaUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-azureUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-gcp-5.4Upgrade linux-image-aws-lts-20.04Upgrade linux-image-5.15.0-1086-gcp-fipsUpgrade linux-image-generic-6.8Upgrade linux-image-4.4.0-1145-awsUpgrade linux-image-oem-22.04cUpgrade linux-image-gkeUpgrade linux-image-aws-lts-18.04Upgrade linux-image-4.4.0-1146-kvmUpgrade linux-image-5.4.0-1151-gcpUpgrade linux-image-lowlatency-6.11Upgrade linux-image-5.15.0-1081-nvidia-lowlatencyUpgrade linux-image-generic-64kUpgrade linux-image-5.15.0-1029-nvidia-tegra-igxUpgrade linux-image-4.4.0-270-lowlatencyUpgrade linux-image-6.8.1-1024-realtimeUpgrade linux-image-kvmUpgrade linux-image-5.15.0-1084-gkeUpgrade linux-image-4.15.0-1182-awsUpgrade linux-image-4.15.0-1175-gcpUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-6.14.0-1007-azureUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-realtime-6.8.1Upgrade linux-image-6.11.0-29-generic-64kUpgrade linux-image-6.8.0-2025-raspi-realtimeUpgrade linux-image-oem-osp1Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-5.15.0-1083-kvmUpgrade linux-image-6.11.0-1025-oemUpgrade linux-image-oracle-64kUpgrade linux-image-kvm-5.15Upgrade linux-image-5.15.0-1087-realtimeUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-generic-6.11Upgrade linux-image-raspi-5.4Upgrade linux-image-aws-6.11Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.11.0-1018-azure-fdeUpgrade linux-image-aws-64kUpgrade linux-image-gcp-lts-18.04Upgrade linux-image-azure-nvidia-6.8Upgrade linux-image-azure-5.15Upgrade linux-image-nvidia-64kUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-oem-6.8Upgrade linux-image-5.4.0-219-generic-lpaeUpgrade linux-image-gcp-64kUpgrade linux-image-6.11.0-1016-lowlatency-64kUpgrade linux-image-5.4.0-219-genericUpgrade linux-image-oracle-6.8Upgrade linux-image-oem-22.04bUpgrade linux-image-oem-20.04dUpgrade linux-image-oem-20.04bUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidia-tegraUpgrade linux-image-oem-24.04aUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1030-oemUpgrade linux-image-4.15.0-2099-azure-fipsUpgrade linux-image-6.14.0-1008-gcpUpgrade linux-image-5.4.0-1052-iotUpgrade linux-image-generic-64k-6.11Upgrade linux-image-5.15.0-1079-ibmUpgrade linux-image-4.4.0-270-genericUpgrade linux-image-generic-64k-5.15Upgrade linux-image-6.8.0-1014-gkeopUpgrade linux-image-gcpUpgrade linux-image-aws-lts-24.04Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-6.11.0-1015-raspiUpgrade linux-image-raspiUpgrade linux-image-oem-20.04cUpgrade linux-image-intel-iotgUpgrade linux-image-gkeop-5.15Upgrade linux-image-gke-6.8Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-aws-fips-5.15Upgrade linux-image-5.15.0-1081-nvidiaUpgrade linux-image-5.15.0-1051-xilinx-zynqmpUpgrade linux-image-4.4.0-1183-awsUpgrade linux-image-virtual-hwe-18.04Upgrade linux-image-raspi2Upgrade linux-image-6.8.0-63-genericUpgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-63-generic-64kUpgrade linux-image-5.4.0-1154-azure-fipsUpgrade linux-image-4.15.0-1144-oracleUpgrade linux-image-virtual-6.8Upgrade linux-image-virtual-5.15Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-ibm-6.8Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-virtual-6.11Upgrade linux-image-intelUpgrade linux-image-oracle-6.11Upgrade linux-image-oracle-5.15Upgrade linux-image-4.15.0-2083-gcp-fipsUpgrade linux-image-5.4.0-1107-bluefieldUpgrade linux-image-5.15.0-1092-azureUpgrade linux-image-gcp-fips-4.15Upgrade linux-image-oracle-lts-18.04Upgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-1030-nvidiaUpgrade linux-image-4.15.0-2120-aws-fipsUpgrade linux-image-6.14.0-1007-aws-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-5.15.0-143-lowlatencyUpgrade linux-image-azure-6.8Upgrade linux-image-azure-4.15Upgrade linux-image-nvidia-5.15Upgrade linux-image-oem-24.04Upgrade linux-image-azure-fde-6.11Upgrade linux-image-oracle-64k-6.11 | 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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