In the Linux kernel, the following vulnerability has been resolved:
netem: Update sch->q.qlen before qdisc_tree_reduce_backlog()
qdisc_tree_reduce_backlog() notifies parent qdisc only if child qdisc becomes empty, therefore we need to reduce the backlog of the child qdisc before calling it. Otherwise it would miss the opportunity to call cops->qlen_notify(), in the case of DRR, it resulted in UAF since DRR uses ->qlen_notify() to maintain its active list.
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-tools-debuginfoUpgrade python-perfUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-livepatch-5.10.234-225.917Upgrade kernel-livepatch-5.10.234-225.910Upgrade kernel-toolsUpgrade kernel-livepatch-5.10.233-224.894Upgrade bpftoolUpgrade python-perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-livepatch-5.15.178-120.187Upgrade kernel-tools-develUpgrade kernel-develUpgrade kernel-livepatch-5.10.234-225.895Upgrade kernelUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade perf | Mar 14, 2025 | Feb 18, 2025 |
| Amazon_linux_2023 | — | Upgrade bpftool-debuginfoUpgrade kernel-toolsUpgrade kernel-livepatch-6.1.127-135.201Upgrade kernel-develUpgrade kernel-tools-develUpgrade python3-perf-debuginfoUpgrade perfUpgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-6.1.128-136.201Upgrade kernel-modules-extra-commonUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpf-staticUpgrade kernel-modules-extraUpgrade kernel-livepatch-6.1.129-138.220Upgrade perf-debuginfoUpgrade kernel-libbpf-develUpgrade kernel-libbpfUpgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade python3-perfUpgrade kernel-headersUpgrade kernel | Mar 27, 2025 | Feb 18, 2025 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Mar 17, 2025 | Feb 18, 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 kernelUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade bpftoolUpgrade python3-perf | Aug 13, 2025 | Aug 9, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-toolsUpgrade bpftoolUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-tools-libsUpgrade python3-perf | Aug 13, 2025 | Aug 9, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Feb 18, 2025 |
| Suse | — | Upgrade kernel-64kb-extraUpgrade kernel-azure-optionalUpgrade kernel-rt_debugUpgrade dtb-exynosUpgrade kselftests-kmp-azureUpgrade dtb-marvellUpgrade dtb-sprdUpgrade dtb-amazonUpgrade dtb-caviumUpgrade dtb-lgUpgrade kernel-default-manUpgrade dtb-socionextUpgrade ocfs2-kmp-defaultUpgrade dlm-kmp-rtUpgrade kernel-default-livepatchUpgrade dtb-appleUpgrade kernel-source-rtUpgrade kernel-debug-vdsoUpgrade kernel-source-vanillaUpgrade kernel-azure-develUpgrade ocfs2-kmp-64kbUpgrade reiserfs-kmp-64kbUpgrade kernel-default-livepatch-develUpgrade kernel-rt_debug-develUpgrade kernel-preempt-develUpgrade gfs2-kmp-defaultUpgrade kernel-azureUpgrade kernel-rt-extraUpgrade kselftests-kmp-64kbUpgrade kernel-azure-extraUpgrade kernel-obs-buildUpgrade dtb-alteraUpgrade gfs2-kmp-azureUpgrade kernel-sourceUpgrade kernel-source-azureUpgrade kernel-rt-optionalUpgrade dtb-freescaleUpgrade dtb-amdUpgrade kernel-default-develUpgrade cluster-md-kmp-64kbUpgrade kernel-default-vdsoUpgrade kernel-docs-htmlUpgrade kernel-64kbUpgrade dtb-broadcomUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt-vdsoUpgrade dtb-allwinnerUpgrade kernel-rtUpgrade cluster-md-kmp-azureUpgrade dlm-kmp-64kbUpgrade cluster-md-kmp-defaultUpgrade dtb-amlogicUpgrade kselftests-kmp-rtUpgrade kernel-default-baseUpgrade gfs2-kmp-64kbUpgrade dtb-xilinxUpgrade dlm-kmp-azureUpgrade kernel-rt_debug-vdsoUpgrade dtb-hisiliconUpgrade reiserfs-kmp-defaultUpgrade kernel-kvmsmall-develUpgrade kernel-64kb-develUpgrade ocfs2-kmp-rtUpgrade kernel-zfcpdumpUpgrade kernel-obs-qaUpgrade gfs2-kmp-rtUpgrade cluster-md-kmp-rtUpgrade kernel-macrosUpgrade dtb-renesasUpgrade kernel-syms-azureUpgrade kernel-preemptUpgrade kernel-azure-vdsoUpgrade dlm-kmp-defaultUpgrade kernel-default-optionalUpgrade ocfs2-kmp-azureUpgrade kernel-debug-develUpgrade kernel-64kb-optionalUpgrade dtb-rockchipUpgrade kernel-devel-rtUpgrade kernel-default-base-rebuildUpgrade dtb-qcomUpgrade dtb-apmUpgrade kernel-kvmsmallUpgrade kernel-develUpgrade kernel-default-extraUpgrade dtb-nvidiaUpgrade reiserfs-kmp-rtUpgrade kselftests-kmp-defaultUpgrade reiserfs-kmp-azureUpgrade kernel-docsUpgrade kernel-defaultUpgrade kernel-devel-azureUpgrade kernel-syms-rtUpgrade kernel-debugUpgrade dtb-mediatekUpgrade dtb-armUpgrade kernel-symsUpgrade kernel-rt-develUpgrade kernel-rt-livepatch-devel | Apr 9, 2025 | Feb 18, 2025 |
| Ubuntu | — | Upgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-oem-20.04Upgrade linux-image-6.11.0-1013-gcpUpgrade linux-image-ibmUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-5.4.0-1144-aws-fipsUpgrade linux-image-5.15.0-1082-awsUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-fipsUpgrade linux-image-oem-20.04bUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-lowlatency-64kUpgrade linux-image-5.15.0-138-fipsUpgrade linux-image-genericUpgrade linux-image-azure-lts-22.04Upgrade linux-image-intelUpgrade linux-image-5.15.0-1087-azure-fipsUpgrade linux-image-raspi-nolpaeUpgrade linux-image-5.4.0-1149-azureUpgrade linux-image-aws-fipsUpgrade linux-image-5.15.0-138-lowlatency-64kUpgrade linux-image-gkeUpgrade linux-image-nvidiaUpgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-5.15.0-1081-gcp-fipsUpgrade linux-image-5.15.0-1023-nvidia-tegra-igx-rtUpgrade linux-image-gkeopUpgrade linux-image-oracleUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-5.4.0-1049-iotUpgrade linux-image-5.15.0-1087-azureUpgrade linux-image-lowlatencyUpgrade linux-image-oemUpgrade linux-image-5.4.0-1144-awsUpgrade linux-image-generic-64kUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-gcp-lts-20.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-generic-lpaeUpgrade linux-image-bluefieldUpgrade linux-image-azure-lts-20.04Upgrade linux-image-5.15.0-138-generic-64kUpgrade linux-image-5.4.0-1131-kvmUpgrade linux-image-5.15.0-138-lowlatencyUpgrade linux-image-oracle-lts-20.04Upgrade linux-image-6.11.0-1020-oemUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-gcp-fipsUpgrade linux-image-5.15.0-1076-raspiUpgrade linux-image-5.4.0-214-lowlatencyUpgrade linux-image-5.15.0-1082-aws-fipsUpgrade linux-image-6.11.0-1014-oracle-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.11.0-1012-lowlatency-64kUpgrade linux-image-nvidia-tegraUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-gke-5.15Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-oem-24.04bUpgrade linux-image-5.4.0-1090-ibmUpgrade linux-image-6.11.0-1012-awsUpgrade linux-image-5.15.0-138-generic-lpaeUpgrade linux-image-5.4.0-1147-gcp-fipsUpgrade linux-image-5.15.0-1023-nvidia-tegra-igxUpgrade linux-image-realtimeUpgrade linux-image-aws-lts-22.04Upgrade linux-image-5.4.0-1149-azure-fipsUpgrade linux-image-virtualUpgrade linux-image-oem-20.04dUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-5.4.0-1142-oracleUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.11.0-24-generic-64kUpgrade linux-image-gcp-64kUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-6.11.0-24-genericUpgrade linux-image-5.4.0-1118-fipsUpgrade linux-image-5.15.0-1079-oracleUpgrade linux-image-5.15.0-1078-kvmUpgrade linux-image-5.15.0-1035-nvidia-tegraUpgrade linux-image-5.15.0-1081-gcpUpgrade linux-image-6.11.0-1012-lowlatencyUpgrade linux-image-6.11.0-1013-azureUpgrade linux-image-azure-fdeUpgrade linux-image-5.15.0-138-genericUpgrade linux-image-5.15.0-1064-gkeopUpgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1087-azure-fdeUpgrade linux-image-5.15.0-1074-ibmUpgrade linux-image-5.15.0-1077-intel-iotgUpgrade linux-image-6.11.0-1013-gcp-64kUpgrade linux-image-5.4.0-1147-gcpUpgrade linux-image-6.11.0-1011-raspiUpgrade linux-image-azure-fipsUpgrade linux-image-oem-20.04cUpgrade linux-image-azureUpgrade linux-image-5.4.0-1103-bluefieldUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-oem-osp1Upgrade linux-image-6.11.0-1008-realtimeUpgrade linux-image-5.15.0-1076-nvidia-lowlatencyUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-6.11.0-1013-azure-fdeUpgrade linux-image-6.11.0-1014-oracleUpgrade linux-image-gcpUpgrade linux-image-gkeop-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-5.15.0-1075-intel-iot-realtimeUpgrade linux-image-5.15.0-1082-realtimeUpgrade linux-image-aws-lts-20.04Upgrade linux-image-awsUpgrade linux-image-5.15.0-1076-nvidiaUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-5.4.0-214-genericUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-5.15.0-1079-gkeUpgrade linux-image-raspiUpgrade linux-image-5.15.0-1035-nvidia-tegra-rtUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-azure-cvmUpgrade linux-image-5.15.0-1046-xilinx-zynqmpUpgrade linux-image-oracle-64kUpgrade linux-image-5.4.0-1062-xilinx-zynqmpUpgrade linux-image-kvmUpgrade linux-image-5.4.0-214-generic-lpaeUpgrade linux-image-virtual-hwe-18.04Upgrade linux-image-generic-hwe-24.04 | Apr 24, 2025 | Feb 18, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | Feb 18, 2025 |
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