In the Linux kernel, the following vulnerability has been resolved:
net_sched: ets: 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 ets, there won't be a UAF, but the code will add the same classifier to the list twice, which will cause memory corruption.
In addition to checking for qlen being zero, this patch checks whether the class was already added to the 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/
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 |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-debugUpgrade kernel-rt-debug-modules-extraUpgrade kernel-tools-libsUpgrade kernel-rt-debug-kvmUpgrade kernel-64k-develUpgrade kernel-modulesUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-debug-coreUpgrade kernel-rt-modulesUpgrade kernel-debug-uki-virtUpgrade kernel-uki-virtUpgrade kernel-rt-debug-modulesUpgrade kernel-headersUpgrade kernel-rt-debug-modules-coreUpgrade kernel-coreUpgrade kernel-zfcpdump-develUpgrade kernel-rt-debugUpgrade rtlaUpgrade kernel-docUpgrade kernel-develUpgrade kernel-debug-modules-coreUpgrade kernel-64k-modules-coreUpgrade kernel-zfcpdumpUpgrade kernel-modules-extraUpgrade kernel-rt-develUpgrade kernel-rt-64k-coreUpgrade kernel-rt-coreUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-64k-modules-coreUpgrade kernel-rt-modules-coreUpgrade kernel-64k-debug-modulesUpgrade kernel-debug-modulesUpgrade kernel-rt-debug-develUpgrade kernel-debug-modules-extraUpgrade kernel-64k-debug-develUpgrade kernel-debug-develUpgrade kernel-modules-coreUpgrade kernel-rt-64k-debug-develUpgrade kernel-64k-debugUpgrade kernel-64k-debug-coreUpgrade kernel-debug-devel-matchedUpgrade kernel-64k-modules-extraUpgrade kernel-rt-64kUpgrade kernel-rt-64k-develUpgrade kernel-rt-64k-debug-coreUpgrade kernel-uki-virt-addonsUpgrade python3-perfUpgrade bpftoolUpgrade kernel-rt-64k-debugUpgrade kernel-64k-debug-modules-extraUpgrade kernel-rt-64k-modulesUpgrade perfUpgrade kernel-zfcpdump-devel-matchedUpgrade rvUpgrade kernel-rt-modules-extraUpgrade kernel-abi-stablelistsUpgrade kernel-64k-devel-matchedUpgrade kernelUpgrade kernel-64kUpgrade kernel-cross-headersUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-toolsUpgrade kernel-devel-matchedUpgrade kernel-rt-debug-coreUpgrade kernel-zfcpdump-modulesUpgrade kernel-64k-debug-modules-coreUpgrade kernel-rt-64k-modules-extraUpgrade kernel-rtUpgrade kernel-rt-64k-debug-modules-extraUpgrade libperfUpgrade kernel-64k-modulesUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-tools-libs-develUpgrade kernel-rt-kvmUpgrade kernel-zfcpdump-coreUpgrade kernel-64k-coreUpgrade kernel-64k-debug-devel-matched | Aug 19, 2025 | Aug 18, 2025 |
| Amazon Linux Ami 2 | — | Upgrade kernel-develUpgrade kernel-toolsUpgrade kernel-headersUpgrade kernel-tools-develUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernelUpgrade kernel-livepatch-5.15.184-125.190Upgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade python-perf | Jun 10, 2025 | May 20, 2025 |
| Amazon_linux_2023 | — | Upgrade kernel6.12-debuginfoUpgrade bpftool-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade perf6.12Upgrade kernel-livepatch-6.12.29-33.102Upgrade kernel-toolsUpgrade kernel-modules-extra-commonUpgrade kernel-headersUpgrade kernel-libbpf-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-modules-extraUpgrade bpftoolUpgrade kernel6.12Upgrade kernel-libbpfUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-libbpf-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade kernel-tools-develUpgrade perf6.12-debuginfoUpgrade python3-perf6.12 | Jun 11, 2025 | May 20, 2025 |
| Debian | — | Upgrade linux-6.1Upgrade linux | May 28, 2025 | May 20, 2025 |
| Oracle_linux | — | Upgrade kernelUpgrade kernel-uek | Jul 17, 2025 | May 20, 2025 |
| Redhat_linux | — | No solution existsUpgrade kernelUpgrade kernel-rt | Jul 9, 2025 | May 20, 2025 |
| Rocky_linux | — | Upgrade kernel-coreUpgrade kernel-cross-headersUpgrade kernel-debug-coreUpgrade kernel-debugUpgrade kernelUpgrade kernel-rt-debug-modulesUpgrade kernel-modules-extraUpgrade kernel-zfcpdump-modules-extraUpgrade rtlaUpgrade kernel-debug-devel-matchedUpgrade python3-perfUpgrade kernel-debug-uki-virtUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-debug-modulesUpgrade kernel-debug-modules-coreUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-modulesUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debug-kvmUpgrade kernel-debuginfoUpgrade kernel-rt-debug-develUpgrade kernel-rt-modules-extraUpgrade kernel-zfcpdump-develUpgrade kernel-debug-develUpgrade kernel-rt-coreUpgrade kernel-headersUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-devel-matchedUpgrade libperfUpgrade kernel-modules-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debug-debuginfoUpgrade kernel-rt-debuginfoUpgrade kernel-rt-develUpgrade kernel-zfcpdump-coreUpgrade perf-debuginfoUpgrade kernel-rt-modules-coreUpgrade kernel-rtUpgrade kernel-rt-debug-coreUpgrade kernel-rt-modulesUpgrade kernel-debug-modules-extraUpgrade python3-perf-debuginfoUpgrade kernel-toolsUpgrade kernel-rt-debugUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-kvmUpgrade kernel-tools-libsUpgrade kernel-debuginfo-common-s390xUpgrade kernel-rt-debug-modules-coreUpgrade kernel-zfcpdumpUpgrade kernel-debug-debuginfoUpgrade kernel-develUpgrade kernel-uki-virtUpgrade kernel-tools-libs-develUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-uki-virt-addonsUpgrade libperf-debuginfoUpgrade rvUpgrade perf | Feb 5, 2026 | Oct 4, 2025 |
| Suse | — | Upgrade dlm-kmp-defaultUpgrade dtb-appleUpgrade kernel-kvmsmallUpgrade dtb-marvellUpgrade kernel-debug-develUpgrade kernel-devel-azureUpgrade kernel-64kb-develUpgrade kernel-default-livepatch-develUpgrade kernel-azure-develUpgrade kernel-default-baseUpgrade gfs2-kmp-64kbUpgrade kernel-symsUpgrade kernel-devel-rtUpgrade kernel-kvmsmall-develUpgrade reiserfs-kmp-azureUpgrade kselftests-kmp-defaultUpgrade kernel-rt-develUpgrade kernel-obs-qaUpgrade dtb-socionextUpgrade kernel-defaultUpgrade dtb-hisiliconUpgrade dtb-mediatekUpgrade dtb-nvidiaUpgrade kernel-rt-livepatch-develUpgrade kernel-macrosUpgrade kernel-syms-rtUpgrade kernel-docsUpgrade kernel-default-extraUpgrade kernel-rt_debugUpgrade dlm-kmp-azureUpgrade dtb-apmUpgrade kernel-rt_debug-vdsoUpgrade dtb-amlogicUpgrade kernel-azure-vdsoUpgrade kselftests-kmp-rtUpgrade ocfs2-kmp-rtUpgrade kernel-zfcpdumpUpgrade dtb-armUpgrade cluster-md-kmp-defaultUpgrade reiserfs-kmp-rtUpgrade dtb-amdUpgrade dtb-rockchipUpgrade gfs2-kmp-rtUpgrade kernel-docs-htmlUpgrade kernel-default-livepatchUpgrade kernel-debug-vdsoUpgrade kernel-azure-optionalUpgrade dtb-qcomUpgrade dlm-kmp-rtUpgrade dtb-amazonUpgrade kernel-default-base-rebuildUpgrade kernel-azureUpgrade kernel-rt-optionalUpgrade dtb-alteraUpgrade reiserfs-kmp-defaultUpgrade ocfs2-kmp-64kbUpgrade kernel-sourceUpgrade cluster-md-kmp-64kbUpgrade kernel-rt-vdsoUpgrade dtb-renesasUpgrade dlm-kmp-64kbUpgrade kernel-64kb-optionalUpgrade kselftests-kmp-64kbUpgrade kernel-default-vdsoUpgrade reiserfs-kmp-64kbUpgrade kernel-64kbUpgrade dtb-caviumUpgrade cluster-md-kmp-azureUpgrade kernel-kvmsmall-vdsoUpgrade kernel-develUpgrade kernel-source-vanillaUpgrade ocfs2-kmp-defaultUpgrade kselftests-kmp-azureUpgrade kernel-rt-extraUpgrade kernel-obs-buildUpgrade kernel-default-optionalUpgrade gfs2-kmp-azureUpgrade kernel-azure-extraUpgrade kernel-rtUpgrade dtb-sprdUpgrade dtb-allwinnerUpgrade cluster-md-kmp-rtUpgrade ocfs2-kmp-azureUpgrade dtb-exynosUpgrade kernel-source-rtUpgrade kernel-default-develUpgrade dtb-broadcomUpgrade kernel-syms-azureUpgrade kernel-debugUpgrade kernel-64kb-extraUpgrade gfs2-kmp-defaultUpgrade dtb-lgUpgrade dtb-xilinxUpgrade dtb-freescaleUpgrade kernel-rt_debug-develUpgrade kernel-source-azure | Dec 5, 2025 | Aug 27, 2025 |
| Ubuntu | — | Upgrade linux-image-5.15.0-1052-xilinx-zynqmpUpgrade linux-image-fips-5.15Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-gcp-5.15Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-5.15.0-1083-raspiUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-5.15.0-1041-nvidia-tegraUpgrade linux-image-gcp-6.8Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-aws-fips-6.8Upgrade linux-image-oracle-6.14Upgrade linux-image-realtimeUpgrade linux-image-aws-fipsUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-5.15.0-144-lowlatencyUpgrade linux-image-6.14.0-1011-gcp-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.14.0-1010-azureUpgrade linux-image-generic-6.8Upgrade linux-image-aws-5.15Upgrade linux-image-fipsUpgrade linux-image-5.15.0-1094-azureUpgrade linux-image-generic-64k-6.14Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-5.15.0-1081-intel-iot-realtimeUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-5.15.0-1070-gkeopUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-oem-20.04Upgrade linux-image-raspi-nolpaeUpgrade linux-image-lowlatency-6.8Upgrade linux-image-5.15.0-1094-azure-fipsUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-oracleUpgrade linux-image-oem-6.14Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-5.15.0-1082-nvidia-lowlatencyUpgrade linux-image-6.14.0-1009-oracleUpgrade linux-image-awsUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-gkeop-6.8Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-azure-6.14Upgrade linux-image-kvmUpgrade linux-image-aws-64kUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-generic-5.15Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-6.14.0-1006-realtimeUpgrade linux-image-5.15.0-1088-realtimeUpgrade linux-image-azure-cvmUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-virtualUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-5.15.0-144-fipsUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-ibm-6.8Upgrade linux-image-aws-64k-5.15Upgrade linux-image-5.15.0-1030-nvidia-tegra-igxUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-virtual-5.15Upgrade linux-image-6.14.0-1011-gcpUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-lowlatency-5.15Upgrade linux-image-gkeUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-generic-64k-6.8Upgrade linux-image-5.15.0-1088-awsUpgrade linux-image-5.15.0-1085-gkeUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-azure-fipsUpgrade linux-image-ibm-5.15Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-gcp-6.14Upgrade linux-image-gcpUpgrade linux-image-generic-6.14Upgrade linux-image-azure-lts-24.04Upgrade linux-image-oem-22.04bUpgrade linux-image-intel-iotgUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oem-22.04Upgrade linux-image-oem-24.04cUpgrade linux-image-oem-22.04cUpgrade linux-image-5.15.0-144-genericUpgrade linux-image-5.15.0-1080-ibmUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-virtual-6.8Upgrade linux-image-oem-20.04dUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-nvidiaUpgrade linux-image-aws-64k-6.14Upgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-azure-fips-6.8Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-5.15.0-144-generic-lpaeUpgrade linux-image-raspi-6.8Upgrade linux-image-5.15.0-144-lowlatency-64kUpgrade linux-image-raspi-5.15Upgrade linux-image-raspiUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-nvidia-64kUpgrade linux-image-generic-64kUpgrade linux-image-kvm-5.15Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-aws-lts-22.04Upgrade linux-image-aws-fips-5.15Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-azure-fips-5.15Upgrade linux-image-5.15.0-1087-gcpUpgrade linux-image-5.15.0-1085-oracleUpgrade linux-image-generic-64k-5.15Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-5.15.0-1082-nvidiaUpgrade linux-image-realtime-5.15Upgrade linux-image-oem-22.04aUpgrade linux-image-6.14.0-24-generic-64kUpgrade linux-image-6.14.0-1009-oracle-64kUpgrade linux-image-5.15.0-1088-aws-64kUpgrade linux-image-gke-5.15Upgrade linux-image-oem-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-oracle-6.8Upgrade linux-image-oracle-5.15Upgrade linux-image-oem-22.04dUpgrade linux-image-realtime-6.8.1Upgrade linux-image-oem-20.04cUpgrade linux-image-nvidia-5.15Upgrade linux-image-gcp-fipsUpgrade linux-image-raspi-6.14Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-nvidia-tegraUpgrade linux-image-intelUpgrade linux-image-gke-64kUpgrade linux-image-gke-6.8Upgrade linux-image-aws-6.8Upgrade linux-image-aws-6.14Upgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-6.14.0-1009-awsUpgrade linux-image-5.15.0-1087-gcp-fipsUpgrade linux-image-5.15.0-1030-nvidia-tegra-igx-rtUpgrade linux-image-gcp-64k-6.14Upgrade linux-image-gke-64k-6.8Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-6.14.0-1009-raspiUpgrade linux-image-5.15.0-144-generic-64kUpgrade linux-image-5.15.0-1088-aws-fipsUpgrade linux-image-xilinxUpgrade linux-image-realtime-6.14Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-oracle-64k-6.14Upgrade linux-image-nvidia-6.8Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-5.15.0-1041-nvidia-tegra-rtUpgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-virtual-6.14Upgrade linux-image-genericUpgrade linux-image-gcp-64kUpgrade linux-image-azureUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-lowlatencyUpgrade linux-image-gkeopUpgrade linux-image-oem-20.04bUpgrade linux-image-oem-24.04aUpgrade linux-image-5.15.0-1084-kvmUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.14.0-24-genericUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-fips-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-gkeop-5.15Upgrade linux-image-lowlatency-64kUpgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-ibmUpgrade linux-image-6.14.0-1007-oemUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-azure-5.15Upgrade linux-image-azure-lts-22.04Upgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-6.14.0-1009-aws-64kUpgrade linux-image-xilinx-6.8Upgrade linux-image-oracle-64k | Jun 26, 2025 | May 20, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 22, 2025 | May 20, 2025 |
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