In the Linux kernel, the following vulnerability has been resolved:
net_sched: qfq: Fix double list add in class with netem as child qdisc
As described in Gerrard's report [1], there are use cases where a netem child qdisc will make the parent qdisc's enqueue callback reentrant. In the case of qfq, there won't be a UAF, but the code will add the same classifier to the list twice, which will cause memory corruption.
This patch checks whether the class was already added to the agg->active list (cl_is_active) before doing the addition to cater for the reentrant case.
[1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-perfUpgrade perf-debuginfoUpgrade kernel-livepatch-5.15.184-125.190Upgrade perfUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade python-perf-debuginfoUpgrade kernel-toolsUpgrade kernel-livepatch-5.10.238-231.953Upgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-livepatch-5.15.182-123.190Upgrade kernel-tools-develUpgrade kernel-debuginfoUpgrade kernel | Jun 24, 2025 | May 20, 2025 |
| Amazon_linux_2023 | — | Upgrade kernel-headersUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-libbpf-debuginfoUpgrade python3-perfUpgrade kernel-modules-extra-commonUpgrade python3-perf6.12-debuginfoUpgrade kernel-tools-develUpgrade perf6.12-debuginfoUpgrade kernel6.12-modules-extraUpgrade perf-debuginfoUpgrade perfUpgrade kernel-livepatch-6.12.29-33.102Upgrade kernel-toolsUpgrade kernelUpgrade kernel-develUpgrade kernel-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-6.1.140-154.222Upgrade kernel-libbpf-develUpgrade bpftool-debuginfoUpgrade bpftoolUpgrade perf6.12Upgrade kernel-tools-debuginfoUpgrade kernel6.12-debuginfoUpgrade python3-perf6.12Upgrade kernel-modules-extraUpgrade kernel-libbpfUpgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-libbpf-static | Jun 24, 2025 | May 20, 2025 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | May 28, 2025 | May 20, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-tools-libsUpgrade python3-perfUpgrade bpftoolUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-tools | Oct 14, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-toolsUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade bpftool | Sep 15, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade bpftoolUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel-tools | Oct 24, 2025 | Sep 9, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Jul 17, 2025 | May 20, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 20, 2025 |
| Suse | — | Upgrade kernel-debug-develUpgrade kernel-defaultUpgrade kselftests-kmp-azureUpgrade kernel-64kb-extraUpgrade kernel-azureUpgrade dtb-nvidiaUpgrade cluster-md-kmp-64kbUpgrade kernel-rt_debugUpgrade kernel-64kb-develUpgrade kernel-obs-buildUpgrade reiserfs-kmp-rtUpgrade dtb-allwinnerUpgrade kernel-default-optionalUpgrade kernel-default-baseUpgrade dtb-caviumUpgrade dtb-sprdUpgrade dtb-xilinxUpgrade kernel-develUpgrade ocfs2-kmp-defaultUpgrade kernel-azure-extraUpgrade dtb-amdUpgrade dlm-kmp-rtUpgrade dtb-broadcomUpgrade dtb-appleUpgrade dtb-marvellUpgrade kernel-64kb-optionalUpgrade reiserfs-kmp-64kbUpgrade kernel-docsUpgrade dtb-hisiliconUpgrade gfs2-kmp-defaultUpgrade ocfs2-kmp-azureUpgrade gfs2-kmp-azureUpgrade dtb-renesasUpgrade kselftests-kmp-defaultUpgrade dlm-kmp-azureUpgrade dtb-socionextUpgrade kernel-source-vanillaUpgrade dlm-kmp-defaultUpgrade kernel-devel-rtUpgrade reiserfs-kmp-defaultUpgrade kernel-debugUpgrade kernel-docs-htmlUpgrade kernel-rt-extraUpgrade kernel-debug-vdsoUpgrade kernel-default-livepatch-develUpgrade kselftests-kmp-rtUpgrade dtb-armUpgrade ocfs2-kmp-rtUpgrade dtb-apmUpgrade dtb-mediatekUpgrade dtb-freescaleUpgrade kernel-obs-qaUpgrade gfs2-kmp-rtUpgrade kernel-rt_debug-vdsoUpgrade kernel-zfcpdumpUpgrade kernel-sourceUpgrade kernel-rt-develUpgrade kernel-rtUpgrade kernel-kvmsmall-vdsoUpgrade kernel-kvmsmallUpgrade dtb-lgUpgrade reiserfs-kmp-azureUpgrade dtb-alteraUpgrade ocfs2-kmp-64kbUpgrade cluster-md-kmp-defaultUpgrade kernel-source-rtUpgrade kernel-default-extraUpgrade kernel-default-develUpgrade kernel-rt_debug-develUpgrade dtb-amazonUpgrade cluster-md-kmp-azureUpgrade kernel-macrosUpgrade kernel-default-base-rebuildUpgrade kernel-azure-vdsoUpgrade kernel-azure-optionalUpgrade gfs2-kmp-64kbUpgrade dtb-exynosUpgrade kselftests-kmp-64kbUpgrade kernel-symsUpgrade kernel-source-azureUpgrade dtb-rockchipUpgrade cluster-md-kmp-rtUpgrade kernel-default-vdsoUpgrade kernel-rt-livepatch-develUpgrade kernel-default-livepatchUpgrade dtb-amlogicUpgrade kernel-syms-rtUpgrade kernel-rt-vdsoUpgrade kernel-syms-azureUpgrade kernel-rt-optionalUpgrade kernel-devel-azureUpgrade kernel-azure-develUpgrade dlm-kmp-64kbUpgrade kernel-kvmsmall-develUpgrade kernel-64kbUpgrade dtb-qcom | Dec 5, 2025 | Jun 16, 2025 |
| Ubuntu | — | Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidiaUpgrade linux-image-azure-lts-24.04Upgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-5.15.0-1085-oracleUpgrade linux-image-azure-lts-22.04Upgrade linux-image-aws-fipsUpgrade linux-image-5.15.0-1082-nvidiaUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1088-aws-64kUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-generic-64k-5.15Upgrade linux-image-ibm-5.15Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-gkeopUpgrade linux-image-6.14.0-1009-oracle-64kUpgrade linux-image-gcp-fipsUpgrade linux-image-5.15.0-1041-nvidia-tegraUpgrade linux-image-5.15.0-1088-awsUpgrade linux-image-6.14.0-1009-aws-64kUpgrade linux-image-nvidia-5.15Upgrade linux-image-nvidia-tegraUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gke-6.8Upgrade linux-image-ibm-classicUpgrade linux-image-raspiUpgrade linux-image-ibmUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-genericUpgrade linux-image-lowlatency-5.15Upgrade linux-image-oem-20.04cUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-oracle-64k-6.14Upgrade linux-image-5.15.0-1094-azure-fipsUpgrade linux-image-6.14.0-1011-gcpUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-fipsUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-oem-6.14Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-generic-64kUpgrade linux-image-6.14.0-24-genericUpgrade linux-image-6.8.0-100-fipsUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-6.14.0-1006-realtimeUpgrade linux-image-6.14.0-1009-raspiUpgrade linux-image-oem-22.04aUpgrade linux-image-azureUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-oem-24.04Upgrade linux-image-5.15.0-1080-ibmUpgrade linux-image-5.15.0-144-generic-lpaeUpgrade linux-image-6.14.0-1009-awsUpgrade linux-image-gkeop-6.8Upgrade linux-image-generic-5.15Upgrade linux-image-6.14.0-1009-oracleUpgrade linux-image-6.14.0-24-generic-64kUpgrade linux-image-5.15.0-144-genericUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-5.15.0-144-fipsUpgrade linux-image-5.15.0-1041-nvidia-tegra-rtUpgrade linux-image-aws-64kUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-6.8.0-1046-awsUpgrade linux-image-gke-5.15Upgrade linux-image-azure-6.8Upgrade linux-image-gkeUpgrade linux-image-kvm-5.15Upgrade linux-image-6.8.0-1046-azureUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1083-raspiUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-azure-6.14Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-raspi-6.14Upgrade linux-image-oracle-5.15Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-lowlatency-6.8Upgrade linux-image-6.14.0-1007-oemUpgrade linux-image-5.15.0-144-lowlatency-64kUpgrade linux-image-intelUpgrade linux-image-5.15.0-1081-intel-iot-realtimeUpgrade linux-image-5.15.0-1094-azureUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-virtual-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-5.15.0-1052-xilinx-zynqmpUpgrade linux-image-oem-22.04Upgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-azure-fips-5.15Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-oem-20.04bUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-5.15.0-144-lowlatencyUpgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-aws-lts-22.04Upgrade linux-image-lowlatencyUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-gke-64kUpgrade linux-image-oem-22.04cUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-5.15.0-1082-nvidia-lowlatencyUpgrade linux-image-5.15.0-144-generic-64kUpgrade linux-image-6.14.0-1010-azureUpgrade linux-image-aws-64k-5.15Upgrade linux-image-5.15.0-1030-nvidia-tegra-igxUpgrade linux-image-kvmUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-oracleUpgrade linux-image-oem-20.04Upgrade linux-image-oem-24.04aUpgrade linux-image-nvidia-6.8Upgrade linux-image-6.14.0-1011-gcp-64kUpgrade linux-image-generic-64k-6.14Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-realtimeUpgrade linux-image-generic-6.14Upgrade linux-image-gcpUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-raspi-nolpaeUpgrade linux-image-fips-5.15Upgrade linux-image-5.15.0-1087-gcp-fipsUpgrade linux-image-raspi-realtimeUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-azure-cvmUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-gkeop-5.15Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-aws-fips-6.8Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-5.15.0-1087-gcpUpgrade linux-image-azure-5.15Upgrade linux-image-gcp-6.8Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-oracle-6.8Upgrade linux-image-gcp-64k-6.14Upgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-virtual-5.15Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-virtual-6.14Upgrade linux-image-aws-5.15Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-5.15.0-1085-gkeUpgrade linux-image-xilinx-6.8Upgrade linux-image-gcp-5.15Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-ibm-6.8Upgrade linux-image-awsUpgrade linux-image-azure-fips-6.8Upgrade linux-image-nvidia-64kUpgrade linux-image-fips-6.8Upgrade linux-image-realtime-6.14Upgrade linux-image-gcp-64kUpgrade linux-image-5.15.0-1088-aws-fipsUpgrade linux-image-azure-fipsUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-oem-20.04dUpgrade linux-image-virtualUpgrade linux-image-5.15.0-1070-gkeopUpgrade linux-image-raspi-5.15Upgrade linux-image-aws-fips-5.15Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-5.15.0-1088-realtimeUpgrade linux-image-5.15.0-1084-kvmUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oem-22.04dUpgrade linux-image-generic-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-aws-6.14Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-oracle-6.14Upgrade linux-image-oem-24.04cUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-gke-64k-6.8Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-5.15.0-1030-nvidia-tegra-igx-rtUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-realtime-5.15Upgrade linux-image-xilinxUpgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-generic-64k-6.8Upgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-aws-64k-6.14Upgrade linux-image-raspi-6.8Upgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-gcp-6.14 | Jun 26, 2025 | May 20, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | May 20, 2025 |
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