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 bpftoolUpgrade kernel-64k-modulesUpgrade kernel-tools-libs-develUpgrade kernel-toolsUpgrade kernel-rt-kvmUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-64k-coreUpgrade kernelUpgrade kernel-64k-modules-extraUpgrade kernel-abi-stablelistsUpgrade libperfUpgrade kernel-zfcpdump-modulesUpgrade kernel-cross-headersUpgrade kernel-rt-64k-debug-coreUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-64k-debug-modules-extraUpgrade kernel-64k-debug-coreUpgrade kernel-rt-debug-coreUpgrade kernel-devel-matchedUpgrade kernel-64k-debug-modules-coreUpgrade kernel-64k-devel-matchedUpgrade kernel-rt-64k-debugUpgrade python3-perfUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-rt-64k-debug-develUpgrade kernel-rt-64k-develUpgrade kernel-rt-64k-modulesUpgrade kernel-uki-virt-addonsUpgrade kernel-64k-debugUpgrade kernel-zfcpdump-coreUpgrade kernel-64kUpgrade rvUpgrade kernel-rt-modules-extraUpgrade kernel-debug-devel-matchedUpgrade kernel-rt-64k-modules-extraUpgrade kernel-rtUpgrade kernel-rt-64kUpgrade perfUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-rt-debug-modules-coreUpgrade kernel-debug-modules-coreUpgrade kernel-uki-virtUpgrade kernel-64k-debug-modulesUpgrade kernel-modules-coreUpgrade kernel-debug-modulesUpgrade kernel-debug-modules-extraUpgrade kernel-rt-64k-coreUpgrade kernel-rt-modules-coreUpgrade kernel-rt-64k-modules-coreUpgrade kernel-rt-coreUpgrade kernel-zfcpdump-develUpgrade kernel-64k-develUpgrade kernel-modulesUpgrade kernel-coreUpgrade kernel-rt-debug-develUpgrade kernel-tools-libsUpgrade kernel-rt-64k-debug-modules-coreUpgrade rtlaUpgrade kernel-debug-uki-virtUpgrade kernel-rt-debug-modulesUpgrade kernel-modules-extraUpgrade kernel-debug-coreUpgrade kernel-64k-modules-coreUpgrade kernel-debugUpgrade kernel-rt-debug-kvmUpgrade kernel-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-debugUpgrade kernel-rt-modulesUpgrade kernel-zfcpdumpUpgrade kernel-headersUpgrade kernel-rt-debug-modules-extraUpgrade kernel-docUpgrade kernel-rt-develUpgrade kernel-64k-debug-develUpgrade kernel-debug-devel | Aug 19, 2025 | Aug 18, 2025 |
| Amazon Linux Ami 2 | — | Upgrade bpftool-debuginfoUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernel-livepatch-5.15.184-125.190Upgrade python-perfUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade kernel-tools-develUpgrade perfUpgrade kernel-toolsUpgrade kernel-headersUpgrade perf-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo | Jun 10, 2025 | May 20, 2025 |
| Amazon_linux_2023 | — | Upgrade kernel-libbpf-debuginfoUpgrade kernel-develUpgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade kernel6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-libbpfUpgrade kernel-libbpf-staticUpgrade kernel-tools-develUpgrade perf6.12-debuginfoUpgrade python3-perf6.12Upgrade kernel-livepatch-6.12.29-33.102Upgrade kernel-headersUpgrade bpftool-debuginfoUpgrade kernel-toolsUpgrade kernel-modules-extra-commonUpgrade kernel6.12-modules-extraUpgrade python3-perf6.12-debuginfoUpgrade kernel-libbpf-develUpgrade perf6.12Upgrade kernel6.12-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64 | Jun 11, 2025 | May 20, 2025 |
| Debian | — | Upgrade linux-6.1Upgrade linux | May 28, 2025 | May 20, 2025 |
| Oracle_linux | — | Upgrade kernel-uekUpgrade kernel | Jul 17, 2025 | May 20, 2025 |
| Redhat_linux | — | No solution existsUpgrade kernelUpgrade kernel-rt | Jul 9, 2025 | May 20, 2025 |
| Rocky_linux | — | Upgrade libperfUpgrade kernel-rt-modules-extraUpgrade kernel-zfcpdump-develUpgrade kernelUpgrade kernel-debug-develUpgrade kernel-rt-debug-kvmUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-debuginfoUpgrade kernel-modules-coreUpgrade kernel-debuginfoUpgrade kernel-modulesUpgrade kernel-rt-coreUpgrade kernel-rt-debug-develUpgrade kernel-debug-modules-coreUpgrade kernel-devel-matchedUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-headersUpgrade kernel-modules-extraUpgrade rtlaUpgrade kernel-debugUpgrade kernel-debug-uki-virtUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-coreUpgrade kernel-debug-devel-matchedUpgrade kernel-debug-modulesUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-cross-headersUpgrade kernel-zfcpdump-modules-extraUpgrade python3-perfUpgrade kernel-coreUpgrade kernel-zfcpdumpUpgrade kernel-debuginfo-common-s390xUpgrade kernel-rt-modules-coreUpgrade python3-perf-debuginfoUpgrade kernel-rtUpgrade kernel-uki-virtUpgrade kernel-debug-modules-extraUpgrade kernel-rt-develUpgrade kernel-rt-debug-modules-coreUpgrade kernel-zfcpdump-modulesUpgrade kernel-tools-libsUpgrade kernel-rt-kvmUpgrade kernel-rt-debuginfoUpgrade rvUpgrade kernel-develUpgrade libperf-debuginfoUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-debuginfoUpgrade kernel-rt-debugUpgrade kernel-rt-modulesUpgrade perfUpgrade perf-debuginfoUpgrade kernel-rt-debug-debuginfoUpgrade kernel-rt-debug-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-toolsUpgrade kernel-uki-virt-addonsUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-tools-libs-devel | Feb 5, 2026 | Oct 4, 2025 |
| Suse | — | Upgrade kernel-64kb-develUpgrade kernel-default-livepatch-develUpgrade kernel-symsUpgrade kselftests-kmp-defaultUpgrade kernel-debug-develUpgrade kernel-rt-livepatch-develUpgrade kernel-zfcpdumpUpgrade dtb-socionextUpgrade kselftests-kmp-rtUpgrade cluster-md-kmp-defaultUpgrade dtb-apmUpgrade dtb-armUpgrade dtb-marvellUpgrade ocfs2-kmp-rtUpgrade reiserfs-kmp-azureUpgrade kernel-obs-qaUpgrade dlm-kmp-defaultUpgrade kernel-rt_debugUpgrade kernel-rt_debug-vdsoUpgrade dtb-amlogicUpgrade kernel-default-extraUpgrade dlm-kmp-azureUpgrade dtb-hisiliconUpgrade dtb-appleUpgrade kernel-azure-develUpgrade kernel-syms-rtUpgrade dtb-rockchipUpgrade dtb-amdUpgrade kernel-kvmsmall-develUpgrade gfs2-kmp-rtUpgrade kernel-azure-vdsoUpgrade kernel-macrosUpgrade kernel-rt-develUpgrade gfs2-kmp-64kbUpgrade kernel-devel-azureUpgrade kernel-devel-rtUpgrade kernel-docsUpgrade reiserfs-kmp-rtUpgrade kernel-default-baseUpgrade kernel-kvmsmallUpgrade kernel-defaultUpgrade dtb-nvidiaUpgrade dtb-mediatekUpgrade kernel-default-livepatchUpgrade dtb-exynosUpgrade kernel-64kb-optionalUpgrade dtb-amazonUpgrade kernel-source-vanillaUpgrade kernel-default-vdsoUpgrade kernel-source-azureUpgrade kernel-rt-optionalUpgrade kernel-docs-htmlUpgrade kernel-debug-vdsoUpgrade kernel-azure-optionalUpgrade dtb-qcomUpgrade dlm-kmp-rtUpgrade kernel-rt_debug-develUpgrade kernel-64kbUpgrade kernel-source-rtUpgrade kernel-default-develUpgrade kernel-debugUpgrade dtb-lgUpgrade kernel-obs-buildUpgrade kernel-default-optionalUpgrade gfs2-kmp-azureUpgrade ocfs2-kmp-defaultUpgrade kselftests-kmp-azureUpgrade dtb-broadcomUpgrade kernel-syms-azureUpgrade gfs2-kmp-defaultUpgrade kernel-rt-extraUpgrade kernel-64kb-extraUpgrade dtb-allwinnerUpgrade kernel-develUpgrade dtb-caviumUpgrade cluster-md-kmp-azureUpgrade reiserfs-kmp-64kbUpgrade kernel-kvmsmall-vdsoUpgrade cluster-md-kmp-rtUpgrade ocfs2-kmp-azureUpgrade kernel-rtUpgrade kernel-azure-extraUpgrade dtb-sprdUpgrade kselftests-kmp-64kbUpgrade kernel-rt-vdsoUpgrade ocfs2-kmp-64kbUpgrade reiserfs-kmp-defaultUpgrade kernel-sourceUpgrade dtb-renesasUpgrade dlm-kmp-64kbUpgrade cluster-md-kmp-64kbUpgrade dtb-xilinxUpgrade dtb-freescaleUpgrade dtb-alteraUpgrade kernel-default-base-rebuildUpgrade kernel-azure | Dec 5, 2025 | Aug 27, 2025 |
| Ubuntu | — | Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-realtime-6.14Upgrade linux-image-xilinxUpgrade linux-image-5.15.0-1084-kvmUpgrade linux-image-5.15.0-1088-aws-fipsUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-nvidia-6.8Upgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-5.15.0-1041-nvidia-tegra-rtUpgrade linux-image-6.14.0-1009-raspiUpgrade linux-image-oem-24.04cUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-5.15.0-144-generic-64kUpgrade linux-image-6.14.0-24-genericUpgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-fips-5.15Upgrade linux-image-6.8.0-100-genericUpgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-nvidia-tegraUpgrade linux-image-aws-lts-22.04Upgrade linux-image-5.15.0-1080-ibmUpgrade linux-image-5.15.0-144-genericUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-lowlatencyUpgrade linux-image-6.14.0-1009-awsUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-aws-6.8Upgrade linux-image-aws-6.14Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-raspi-6.14Upgrade linux-image-5.15.0-1087-gcp-fipsUpgrade linux-image-gcp-64k-6.14Upgrade linux-image-intelUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-gke-6.8Upgrade linux-image-gke-64k-6.8Upgrade linux-image-5.15.0-1030-nvidia-tegra-igx-rtUpgrade linux-image-generic-6.14Upgrade linux-image-oem-20.04dUpgrade linux-image-virtual-6.8Upgrade linux-image-nvidiaUpgrade linux-image-kvm-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-raspi-5.15Upgrade linux-image-gke-64kUpgrade linux-image-azure-lts-24.04Upgrade linux-image-oem-20.04bUpgrade linux-image-oem-24.04aUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-gke-5.15Upgrade linux-image-gkeop-5.15Upgrade linux-image-ibmUpgrade linux-image-6.14.0-24-generic-64kUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-5.15.0-1082-nvidiaUpgrade linux-image-aws-64k-6.14Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-generic-64kUpgrade linux-image-oem-22.04Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-azure-fips-6.8Upgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-gcpUpgrade linux-image-raspi-6.8Upgrade linux-image-5.15.0-144-generic-lpaeUpgrade linux-image-raspiUpgrade linux-image-5.15.0-144-lowlatency-64kUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-intel-iotgUpgrade linux-image-realtime-6.8.1Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-oem-22.04cUpgrade linux-image-oem-24.04Upgrade linux-image-oracle-64kUpgrade linux-image-gkeopUpgrade linux-image-fips-6.8Upgrade linux-image-ibm-classicUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-azureUpgrade linux-image-gcp-64kUpgrade linux-image-genericUpgrade linux-image-6.14.0-1007-oemUpgrade linux-image-virtual-6.14Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-1046-azureUpgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-lowlatency-64kUpgrade linux-image-xilinx-6.8Upgrade linux-image-5.15.0-1085-oracleUpgrade linux-image-nvidia-5.15Upgrade linux-image-oem-20.04cUpgrade linux-image-5.15.0-1088-aws-64kUpgrade linux-image-6.14.0-1009-oracle-64kUpgrade linux-image-5.15.0-1087-gcpUpgrade linux-image-azure-fips-5.15Upgrade linux-image-realtime-5.15Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-generic-64k-5.15Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-gcp-6.14Upgrade linux-image-oem-22.04aUpgrade linux-image-azure-6.8Upgrade linux-image-azure-lts-22.04Upgrade linux-image-gcp-fipsUpgrade linux-image-oem-22.04dUpgrade linux-image-6.14.0-1009-aws-64kUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-azure-5.15Upgrade linux-image-oracle-5.15Upgrade linux-image-oracle-6.8Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-aws-fipsUpgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-6.14.0-1009-oracleUpgrade linux-image-6.14.0-1011-gcp-64kUpgrade linux-image-5.15.0-1088-realtimeUpgrade linux-image-virtualUpgrade linux-image-oracle-6.14Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-generic-6.8Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-5.15.0-1052-xilinx-zynqmpUpgrade linux-image-azure-fipsUpgrade linux-image-5.15.0-144-lowlatencyUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-aws-5.15Upgrade linux-image-virtual-5.15Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-aws-64k-5.15Upgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-ibm-5.15Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-gcp-5.15Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-raspi-nolpaeUpgrade linux-image-realtimeUpgrade linux-image-raspi-realtimeUpgrade linux-image-5.15.0-1083-raspiUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-generic-64k-6.14Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-5.15.0-1094-azure-fipsUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.15.0-1070-gkeopUpgrade linux-image-oem-6.14Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-5.15.0-1081-intel-iot-realtimeUpgrade linux-image-fipsUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-gcp-6.8Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-oem-20.04Upgrade linux-image-azure-6.14Upgrade linux-image-oracleUpgrade linux-image-lowlatency-6.8Upgrade linux-image-generic-5.15Upgrade linux-image-awsUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-5.15.0-1082-nvidia-lowlatencyUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-aws-fips-6.8Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-5.15.0-1041-nvidia-tegraUpgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-5.15.0-1085-gkeUpgrade linux-image-6.14.0-1011-gcpUpgrade linux-image-aws-64k-6.8Upgrade linux-image-fips-5.15Upgrade linux-image-5.15.0-1030-nvidia-tegra-igxUpgrade linux-image-generic-lpaeUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-aws-64kUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-ibm-6.8Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-kvmUpgrade linux-image-lowlatency-5.15Upgrade linux-image-6.14.0-1010-azureUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-gkeUpgrade linux-image-5.15.0-1088-awsUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-64k-6.8Upgrade linux-image-6.14.0-1006-realtimeUpgrade linux-image-5.15.0-144-fipsUpgrade linux-image-5.15.0-1094-azureUpgrade linux-image-azure-cvm | 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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