A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation.
If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free.
We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-zfcpdump-modulesUpgrade kernel-zfcpdump-coreUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libs-develUpgrade kernel-docUpgrade kernel-toolsUpgrade kernel-debug-modules-extraUpgrade kernel-debug-develUpgrade kernel-modulesUpgrade kernel-debug-coreUpgrade kernelUpgrade kernel-coreUpgrade kernel-tools-libsUpgrade kernel-debug-modulesUpgrade kernel-modules-extraUpgrade kernel-debugUpgrade kernel-zfcpdumpUpgrade kernel-develUpgrade perfUpgrade kernel-zfcpdump-develUpgrade python3-perfUpgrade kernel-cross-headersUpgrade bpftoolUpgrade kernel-zfcpdump-modules-extra | Feb 23, 2024 | Sep 6, 2023 |
| Amazon Linux Ami 2 | — | Upgrade kernel-toolsUpgrade bpftoolUpgrade perf-debuginfoUpgrade perfUpgrade kernel-livepatch-5.10.186-179.751-debuginfoUpgrade kernel-livepatch-5.10.192-182.736-debuginfoUpgrade kernel-livepatch-5.10.196-185.743Upgrade kernel-livepatch-4.14.326-245.539Upgrade kernel-livepatch-5.10.192-183.736-debuginfoUpgrade kernel-tools-develUpgrade kernel-develUpgrade kernel-livepatch-4.14.322-244.539-debuginfoUpgrade python-perfUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-4.14.320-243.544Upgrade kernel-livepatch-4.14.322-244.539Upgrade kernel-livepatch-5.10.192-182.736Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.10.192-183.736Upgrade kernel-livepatch-4.14.320-243.544-debuginfoUpgrade kernel-livepatch-4.14.322-244.536-debuginfoUpgrade kernel-debuginfoUpgrade kernel-headersUpgrade kernelUpgrade kernel-livepatch-5.10.186-179.751Upgrade kernel-livepatch-4.14.322-246.539Upgrade kernel-livepatch-5.15.133-86.144Upgrade python-perf-debuginfoUpgrade kernel-livepatch-4.14.322-244.536Upgrade kernel-livepatch-4.14.322-246.539-debuginfoUpgrade kernel-tools-debuginfo | Oct 6, 2023 | Sep 6, 2023 |
| Amazon_linux | — | Upgrade kernel | Oct 7, 2023 | Sep 6, 2023 |
| Amazon_linux_2023 | — | Upgrade kernel-libbpfUpgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfoUpgrade kernel-livepatch-6.1.55-75.123Upgrade perfUpgrade bpftool-debuginfoUpgrade perf-debuginfoUpgrade kernel-develUpgrade kernel-livepatch-6.1.49-69.116Upgrade kernel-libbpf-staticUpgrade kernel-livepatch-6.1.52-71.125Upgrade kernel-tools-develUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernelUpgrade kernel-livepatch-6.1.49-70.116Upgrade kernel-libbpf-develUpgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade python3-perf | Feb 17, 2025 | Sep 6, 2023 |
| Centos_linux | — | Upgrade kpatch-patch-3_10_0-1160_108_1-debuginfoUpgrade kpatch-patch-3_10_0-1160_102_1-debuginfoUpgrade kernelUpgrade kpatch-patch-3_10_0-1160_105_1-debuginfoUpgrade kpatch-patch-3_10_0-1160_108_1Upgrade kpatch-patch-3_10_0-1160_105_1Upgrade kernel-rtUpgrade kpatch-patch-3_10_0-1160_102_1 | Jan 25, 2024 | Sep 6, 2023 |
| Debian | — | Upgrade linux | Oct 23, 2023 | Sep 6, 2023 |
| Dell Powerstore Dsa2024120 | — | Upgrade Dell PowerStoreOS to the latest version | Oct 23, 2025 | Mar 26, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-tools | Jan 10, 2024 | Sep 6, 2023 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernelUpgrade bpftoolUpgrade kernel-tools-libs | Jan 10, 2024 | Sep 6, 2023 |
| Huawei Euleros 2_0_sp5 | — | Upgrade kernel-toolsUpgrade kernel-tools-libsUpgrade perfUpgrade python-perfUpgrade kernel-develUpgrade kernelUpgrade kernel-headers | Feb 12, 2024 | Sep 6, 2023 |
| Huawei Euleros 2_0_sp8 | — | Upgrade kernel-tools-libsUpgrade perfUpgrade kernel-headersUpgrade python3-perfUpgrade kernelUpgrade kernel-develUpgrade kernel-toolsUpgrade bpftoolUpgrade python-perf | Mar 13, 2024 | Sep 6, 2023 |
| Huawei Euleros 2_0_sp9 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade python3-perfUpgrade kernel | Jan 10, 2024 | Sep 6, 2023 |
| Oracle_linux | — | Upgrade kernel-uekUpgrade kernel | Dec 12, 2023 | Sep 6, 2023 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rtNo solution exists | Jan 25, 2024 | Sep 6, 2023 |
| Suse | — | Upgrade kernel-default-base-rebuildUpgrade kernel-trace-develUpgrade kernel-azure-vdsoUpgrade dtb-xilinxUpgrade kernel-ec2-develUpgrade ocfs2-kmp-defaultUpgrade dtb-alUpgrade dtb-zteUpgrade kernel-debug-vdsoUpgrade kernel-default-manUpgrade kernel-rt_debug-vdsoUpgrade dtb-rockchipUpgrade kernel-default-baseUpgrade kernel-rt-vdsoUpgrade kernel-rt-livepatch-develUpgrade kernel-trace-baseUpgrade cluster-md-kmp-64kbUpgrade dlm-kmp-rtUpgrade dtb-socionextUpgrade dtb-mediatekUpgrade reiserfs-kmp-defaultUpgrade kernel-docsUpgrade kernel-obs-buildUpgrade dtb-armUpgrade kernel-defaultUpgrade kernel-rt-develUpgrade kernel-default-livepatch-develUpgrade kernel-azureUpgrade dtb-allwinnerUpgrade kernel-64kb-extraUpgrade dlm-kmp-azureUpgrade dtb-amdUpgrade kernel-devel-rtUpgrade kernel-ec2-baseUpgrade kselftests-kmp-defaultUpgrade reiserfs-kmp-azureUpgrade dlm-kmp-defaultUpgrade gfs2-kmp-defaultUpgrade kernel-rt-extraUpgrade kselftests-kmp-rtUpgrade dtb-nvidiaUpgrade dtb-renesasUpgrade dtb-sprdUpgrade kernel-rt_debugUpgrade kernel-zfcpdump-manUpgrade kernel-kvmsmall-baseUpgrade ocfs2-kmp-azureUpgrade kernel-preempt-develUpgrade kernel-source-vanillaUpgrade reiserfs-kmp-rtUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-vanilla-livepatch-develUpgrade kernel-syms-rtUpgrade kernel-rt-livepatchUpgrade cluster-md-kmp-rtUpgrade kernel-vanilla-baseUpgrade kernel-kvmsmall-develUpgrade kernel-zfcpdumpUpgrade dtb-amazonUpgrade dlm-kmp-64kbUpgrade kernel-default-livepatchUpgrade kernel-xen-develUpgrade kernel-default-extraUpgrade kernel-azure-extraUpgrade kernel-xen-baseUpgrade kernel-64kb-livepatch-develUpgrade dtb-exynosUpgrade dtb-apmUpgrade dtb-appleUpgrade gfs2-kmp-azureUpgrade cluster-md-kmp-defaultUpgrade kernel-debug-baseUpgrade dtb-broadcomUpgrade kernel-source-azureUpgrade kernel-rt_debug-develUpgrade kernel-rtUpgrade kernel-debugUpgrade dtb-qcomUpgrade dtb-freescaleUpgrade kernel-default-vdsoUpgrade kernel-debug-livepatch-develUpgrade dtb-caviumUpgrade kernel-xenUpgrade kernel-syms-azureUpgrade kernel-symsUpgrade kernel-source-rtUpgrade kernel-sourceUpgrade kernel-azure-develUpgrade kernel-azure-baseUpgrade dtb-amlogicUpgrade kselftests-kmp-azureUpgrade kernel-default-develUpgrade kernel-obs-qaUpgrade kernel-azure-optionalUpgrade dtb-hisiliconUpgrade kernel-kvmsmallUpgrade kernel-kvmsmall-vdsoUpgrade reiserfs-kmp-64kbUpgrade kselftests-kmp-64kbUpgrade kernel-default-optionalUpgrade kernel-traceUpgrade gfs2-kmp-rtUpgrade kernel-develUpgrade kernel-64kbUpgrade kernel-ec2Upgrade ocfs2-kmp-rtUpgrade kernel-rt-optionalUpgrade kernel-64kb-develUpgrade dtb-alteraUpgrade dtb-marvellUpgrade kernel-debug-develUpgrade kernel-docs-htmlUpgrade kernel-vanillaUpgrade gfs2-kmp-64kbUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-azure-livepatch-develUpgrade dtb-lgUpgrade ocfs2-kmp-64kbUpgrade kernel-devel-azureUpgrade kernel-vanilla-develUpgrade kernel-preemptUpgrade kernel-macrosUpgrade kernel-64kb-optionalUpgrade cluster-md-kmp-azure | Oct 11, 2023 | Sep 6, 2023 |
| Ubuntu | — | Upgrade linux-image-5.15.0-1043-intel-iotgUpgrade linux-image-6.2.0-1014-awsUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-raspi-hwe-18.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-5.4.0-1112-awsUpgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-4.4.0-1124-awsUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-raspi-nolpaeUpgrade linux-image-gcp-lts-20.04Upgrade linux-image-oem-20.04dUpgrade linux-image-6.2.0-1007-starfiveUpgrade linux-image-gkeUpgrade linux-image-5.4.0-1096-raspiUpgrade linux-image-5.4.0-1059-ibmUpgrade linux-image-6.2.0-35-generic-64kUpgrade linux-image-5.15.0-1046-oracleUpgrade linux-image-6.2.0-35-generic-lpaeUpgrade linux-image-4.15.0-1162-awsUpgrade linux-image-bluefieldUpgrade linux-image-generic-lts-trustyUpgrade linux-image-6.2.0-1015-azure-fdeUpgrade linux-image-azure-cvmUpgrade linux-image-3.13.0-194-genericUpgrade linux-image-kvmUpgrade linux-image-aws-lts-18.04Upgrade linux-image-5.4.0-1116-gcpUpgrade linux-image-virtual-hwe-18.04Upgrade linux-image-5.4.0-1101-kvmUpgrade linux-image-virtual-lts-xenialUpgrade linux-image-gcpUpgrade linux-image-oem-20.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-generic-hwe-18.04Upgrade linux-image-4.15.0-219-genericUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oracle-lts-18.04Upgrade linux-image-gkeop-5.15Upgrade linux-image-5.4.0-1073-bluefieldUpgrade linux-image-virtualUpgrade linux-image-nvidia-64k-6.2Upgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-5.15.0-1039-nvidia-lowlatencyUpgrade linux-image-serverUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-5.15.0-87-generic-64kUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-generic-hwe-16.04Upgrade linux-image-5.4.0-165-genericUpgrade linux-image-6.2.0-1011-nvidia-64kUpgrade linux-image-awsUpgrade linux-image-4.15.0-219-lowlatencyUpgrade linux-image-oem-22.04bUpgrade linux-image-gcp-lts-18.04Upgrade linux-image-5.15.0-1045-kvmUpgrade linux-image-5.4.0-1024-iotUpgrade linux-image-4.15.0-1156-gcpUpgrade linux-image-oracleUpgrade linux-image-5.15.0-1041-ibmUpgrade linux-image-5.4.0-165-lowlatencyUpgrade linux-image-6.2.0-1017-gcpUpgrade linux-image-5.4.0-1032-xilinx-zynqmpUpgrade linux-image-6.2.0-1015-azureUpgrade linux-image-5.15.0-1045-gkeUpgrade linux-image-raspiUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-genericUpgrade linux-image-6.2.0-1015-kvmUpgrade linux-image-5.4.0-165-generic-lpaeUpgrade linux-image-gkeopUpgrade linux-image-nvidia-6.2Upgrade linux-image-5.15.0-1045-gcpUpgrade linux-image-lowlatencyUpgrade linux-image-starfiveUpgrade linux-image-5.15.0-1041-raspiUpgrade linux-image-5.4.0-1111-oracleUpgrade linux-image-aws-lts-20.04Upgrade linux-image-generic-lpaeUpgrade linux-image-azure-fdeUpgrade linux-image-4.4.0-1162-awsUpgrade linux-image-raspi2Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-5.15.0-87-lowlatency-64kUpgrade linux-image-aws-hweUpgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-5.15.0-1050-azure-fdeUpgrade linux-image-6.2.0-1011-nvidiaUpgrade linux-image-6.2.0-35-genericUpgrade linux-image-intel-iotgUpgrade linux-image-generic-lts-xenialUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-5.4.0-1118-azureUpgrade linux-image-oemUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.1.0-1023-oemUpgrade linux-image-aws-lts-22.04Upgrade linux-image-ibmUpgrade linux-image-azureUpgrade linux-image-5.15.0-1039-nvidiaUpgrade linux-image-azure-lts-22.04Upgrade linux-image-6.2.0-1014-oracleUpgrade linux-image-4.4.0-246-lowlatencyUpgrade linux-image-virtual-hwe-16.04Upgrade linux-image-4.4.0-246-genericUpgrade linux-image-5.15.0-1031-gkeopUpgrade linux-image-6.2.0-1015-lowlatencyUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.2.0-1015-raspiUpgrade linux-image-4.15.0-1171-azureUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.2.0-1015-lowlatency-64kUpgrade linux-image-5.15.0-87-generic-lpaeUpgrade linux-image-5.15.0-1050-azureUpgrade linux-image-4.15.0-1146-kvmUpgrade linux-image-5.15.0-87-genericUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-oracle-lts-20.04Upgrade linux-image-3.13.0-194-lowlatencyUpgrade linux-image-azure-lts-20.04Upgrade linux-image-azure-lts-18.04Upgrade linux-image-4.4.0-1125-kvmUpgrade linux-image-oem-22.04cUpgrade linux-image-gke-5.15Upgrade linux-image-4.15.0-1125-oracleUpgrade linux-image-oem-22.04aUpgrade linux-image-5.4.0-1079-gkeopUpgrade linux-image-oem-osp1Upgrade linux-image-oem-20.04bUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-generic-64kUpgrade linux-image-oem-20.04cUpgrade linux-image-5.15.0-1048-awsUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-generic-lpae-hwe-22.04Upgrade linux-image-intelUpgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-gkeop-5.4Upgrade linux-image-5.15.0-87-lowlatencyUpgrade linux-image-nvidia | Oct 6, 2023 | Sep 6, 2023 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Sep 6, 2023 |
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