In the Linux kernel, the following vulnerability has been resolved:
net_sched: prio: fix a race in prio_tune()
Gerrard Tai reported a race condition in PRIO, whenever SFQ perturb timer fires at the wrong time.
The race is as follows:
CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put()
This can be abused to underflow a parent's qlen.
Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-develUpgrade python-perf-debuginfoUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade python-perfUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-livepatch-5.15.186-128.192Upgrade perfUpgrade kernel-livepatch-5.10.239-236.958Upgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade kernel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade perf-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade perf6.12-debuginfoUpgrade python3-perfUpgrade kernel-libbpfUpgrade kernel-livepatch-6.12.35-55.103Upgrade kernel6.12Upgrade kernel-livepatch-6.1.144-170.251Upgrade perfUpgrade kernel6.12-modules-extraUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-libbpf-debuginfoUpgrade kernel-modules-extra-commonUpgrade python3-perf6.12Upgrade python3-perf-debuginfoUpgrade bpftoolUpgrade kernel6.12-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel-develUpgrade perf6.12Upgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade kernel-libbpf-develUpgrade kernel-modules-extraUpgrade python3-perf6.12-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64 | Aug 5, 2025 | Jun 20, 2025 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Jun 23, 2025 | Jun 20, 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 kernel-abi-stablelistsUpgrade python3-perfUpgrade kernelUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-tools | Oct 14, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade bpftool | Sep 15, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade bpftoolUpgrade kernelUpgrade python3-perfUpgrade kernel-toolsUpgrade kernel-abi-stablelists | Oct 24, 2025 | Sep 9, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Sep 10, 2025 | Jun 20, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jun 20, 2025 |
| Suse | — | Upgrade kernel-default-baseUpgrade dtb-hisiliconUpgrade gfs2-kmp-defaultUpgrade dtb-amdUpgrade kernel-azureUpgrade kernel-debugUpgrade ocfs2-kmp-defaultUpgrade dtb-alteraUpgrade kernel-rt-develUpgrade dlm-kmp-rtUpgrade dtb-appleUpgrade kernel-debug-vdsoUpgrade kernel-default-vdsoUpgrade dtb-socionextUpgrade dtb-armUpgrade kselftests-kmp-azureUpgrade dtb-allwinnerUpgrade kernel-default-livepatch-develUpgrade kernel-devel-rtUpgrade kernel-debug-develUpgrade dtb-nvidiaUpgrade dtb-sprdUpgrade cluster-md-kmp-64kbUpgrade kernel-default-optionalUpgrade cluster-md-kmp-rtUpgrade kernel-defaultUpgrade dtb-mediatekUpgrade kernel-64kb-optionalUpgrade kernel-azure-extraUpgrade dtb-caviumUpgrade kernel-develUpgrade kernel-preempt-develUpgrade dlm-kmp-defaultUpgrade kernel-docsUpgrade reiserfs-kmp-rtUpgrade kernel-source-vanillaUpgrade dtb-freescaleUpgrade kernel-symsUpgrade kernel-64kb-extraUpgrade dtb-renesasUpgrade kernel-64kb-develUpgrade gfs2-kmp-azureUpgrade kernel-rt_debug-develUpgrade kselftests-kmp-rtUpgrade kernel-azure-optionalUpgrade ocfs2-kmp-azureUpgrade reiserfs-kmp-defaultUpgrade dtb-xilinxUpgrade gfs2-kmp-rtUpgrade dtb-qcomUpgrade kselftests-kmp-64kbUpgrade kernel-docs-htmlUpgrade kernel-source-azureUpgrade kernel-rtUpgrade kernel-azure-develUpgrade dtb-amlogicUpgrade kernel-zfcpdumpUpgrade kernel-default-develUpgrade kernel-default-base-rebuildUpgrade kernel-rt-vdsoUpgrade kernel-azure-vdsoUpgrade dlm-kmp-azureUpgrade kernel-rt_debug-vdsoUpgrade kernel-rt-livepatch-develUpgrade kernel-default-extraUpgrade cluster-md-kmp-azureUpgrade reiserfs-kmp-64kbUpgrade kernel-syms-rtUpgrade kernel-rt-extraUpgrade kernel-kvmsmallUpgrade dlm-kmp-64kbUpgrade kernel-kvmsmall-vdsoUpgrade dtb-rockchipUpgrade reiserfs-kmp-azureUpgrade kernel-preemptUpgrade kernel-obs-qaUpgrade kernel-macrosUpgrade kernel-64kbUpgrade dtb-marvellUpgrade dtb-broadcomUpgrade kernel-kvmsmall-develUpgrade kselftests-kmp-defaultUpgrade kernel-source-rtUpgrade kernel-default-manUpgrade dtb-lgUpgrade cluster-md-kmp-defaultUpgrade dtb-apmUpgrade dtb-exynosUpgrade kernel-syms-azureUpgrade kernel-sourceUpgrade dtb-amazonUpgrade ocfs2-kmp-64kbUpgrade kernel-rt_debugUpgrade kernel-default-livepatchUpgrade kernel-obs-buildUpgrade kernel-rt-optionalUpgrade gfs2-kmp-64kbUpgrade ocfs2-kmp-rtUpgrade kernel-devel-azure | Dec 5, 2025 | Jul 8, 2025 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1034-gcp-64kUpgrade linux-image-aws-5.4Upgrade linux-image-aws-64k-6.14Upgrade linux-image-6.8.0-1022-azure-nvidiaUpgrade linux-image-6.8.0-1033-awsUpgrade linux-image-azure-fdeUpgrade linux-image-azure-fipsUpgrade linux-image-bluefield-5.4Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-gcp-5.15Upgrade linux-image-oracle-6.14Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-5.15.0-1082-intel-iot-realtimeUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-raspiUpgrade linux-image-oem-20.04dUpgrade linux-image-oem-24.04cUpgrade linux-image-aws-lts-20.04Upgrade linux-image-lowlatency-6.8Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-oem-6.8Upgrade linux-image-6.14.0-1012-gcpUpgrade linux-image-gcp-6.14Upgrade linux-image-generic-5.15Upgrade linux-image-6.14.0-1010-aws-64kUpgrade linux-image-ibmUpgrade linux-image-azure-lts-24.04Upgrade linux-image-awsUpgrade linux-image-6.14.0-1007-realtimeUpgrade linux-image-aws-64k-5.15Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-oem-22.04aUpgrade linux-image-virtual-6.8Upgrade linux-image-6.14.0-1010-oracleUpgrade linux-image-aws-fips-5.15Upgrade linux-image-6.8.0-2028-raspi-realtimeUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-5.4.0-1136-kvmUpgrade linux-image-ibm-5.4Upgrade linux-image-5.15.0-1042-nvidia-tegra-rtUpgrade linux-image-gcp-64k-6.14Upgrade linux-image-5.15.0-151-generic-lpaeUpgrade linux-image-6.8.0-1034-gcpUpgrade linux-image-aws-lts-22.04Upgrade linux-image-gcp-64kUpgrade linux-image-5.4.0-1053-iotUpgrade linux-image-6.14.0-1010-oracle-64kUpgrade linux-image-5.15.0-1053-xilinx-zynqmpUpgrade linux-image-azure-lts-20.04Upgrade linux-image-5.15.0-151-genericUpgrade linux-image-raspi-5.4Upgrade linux-image-oracle-64k-6.14Upgrade linux-image-6.8.0-1016-gkeopUpgrade linux-image-6.8.0-1030-oracleUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-lowlatencyUpgrade linux-image-gcp-5.4Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-raspi-6.14Upgrade linux-image-azure-5.4Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-6.8.0-1032-nvidiaUpgrade linux-image-gkeop-6.8Upgrade linux-image-5.15.0-1089-aws-fipsUpgrade linux-image-6.8.0-1030-oracle-64kUpgrade linux-image-gke-5.15Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-gcp-fipsUpgrade linux-image-azure-5.15Upgrade linux-image-5.15.0-1083-nvidiaUpgrade linux-image-5.4.0-1095-ibmUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-generic-hwe-18.04Upgrade linux-image-6.8.0-1029-gkeUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-oracle-5.4Upgrade linux-image-6.8.0-1032-oemUpgrade linux-image-6.14.0-27-genericUpgrade linux-image-azure-nvidia-lts-24.04Upgrade linux-image-6.8.0-1030-ibmUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-5.15.0-145-lowlatency-64kUpgrade linux-image-raspi-6.8Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-65-genericUpgrade linux-image-5.15.0-1083-nvidia-lowlatencyUpgrade linux-image-5.4.0-1067-xilinx-zynqmpUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-fips-5.4Upgrade linux-image-kvmUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-5.4.0-1149-awsUpgrade linux-image-aws-fipsUpgrade linux-image-gcp-fips-5.4Upgrade linux-image-generic-6.14Upgrade linux-image-5.4.0-1149-aws-fipsUpgrade linux-image-ibm-6.8Upgrade linux-image-6.14.0-1010-raspiUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-generic-64k-6.8Upgrade linux-image-5.15.0-1089-realtimeUpgrade linux-image-5.15.0-145-fipsUpgrade linux-image-oem-22.04bUpgrade linux-image-raspi-5.15Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-generic-64k-5.15Upgrade linux-image-realtime-6.8.1Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-5.4.0-220-generic-lpaeUpgrade linux-image-6.8.1-1026-realtimeUpgrade linux-image-raspi-nolpaeUpgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-oracle-5.15Upgrade linux-image-azure-nvidiaUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-azure-cvmUpgrade linux-image-aws-fips-5.4Upgrade linux-image-generic-6.8Upgrade linux-image-raspi2Upgrade linux-image-ibm-classicUpgrade linux-image-aws-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-azure-nvidia-6.8Upgrade linux-image-6.8.0-71-genericUpgrade linux-image-5.15.0-1086-oracleUpgrade linux-image-azureUpgrade linux-image-generic-5.4Upgrade linux-image-kvm-5.15Upgrade linux-image-6.8.0-1032-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1042-nvidia-tegraUpgrade linux-image-gkeop-5.15Upgrade linux-image-bluefieldUpgrade linux-image-fipsUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-5.4.0-220-genericUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1032-raspiUpgrade linux-image-oem-24.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-virtualUpgrade linux-image-oemUpgrade linux-image-oem-20.04cUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-65-lowlatency-64kUpgrade linux-image-5.15.0-1031-nvidia-tegra-igxUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-5.15.0-1083-raspiUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-generic-lpae-5.4Upgrade linux-image-6.8.0-1033-aws-64kUpgrade linux-image-5.4.0-1155-azure-fipsUpgrade linux-image-5.4.0-1147-oracleUpgrade linux-image-5.4.0-1154-azureUpgrade linux-image-5.15.0-1088-gcpUpgrade linux-image-6.14.0-1010-azureUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-oem-20.04Upgrade linux-image-kvm-5.4Upgrade linux-image-ibm-5.15Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-5.15.0-1085-kvmUpgrade linux-image-oracle-6.8Upgrade linux-image-laptop-23.10Upgrade linux-image-5.15.0-1084-intel-iotgUpgrade linux-image-5.15.0-1081-ibmUpgrade linux-image-5.15.0-1088-gcp-fipsUpgrade linux-image-6.8.0-1032-nvidia-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-6.14.0-1008-oemUpgrade linux-image-virtual-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-generic-64kUpgrade linux-image-6.8.0-65-generic-64kUpgrade linux-image-5.4.0-1148-oracleUpgrade linux-image-nvidiaUpgrade linux-image-5.15.0-1089-awsUpgrade linux-image-virtual-hwe-18.04Upgrade linux-image-fips-5.15Upgrade linux-image-azure-6.8Upgrade linux-image-5.15.0-1094-azure-fipsUpgrade linux-image-raspi-realtimeUpgrade linux-image-realtime-6.14Upgrade linux-image-nvidia-5.15Upgrade linux-image-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-gkeUpgrade linux-image-aws-6.14Upgrade linux-image-6.8.0-1032-nvidia-lowlatencyUpgrade linux-image-lowlatency-64kUpgrade linux-image-oem-22.04cUpgrade linux-image-gcp-6.8Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-azure-6.14Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-lowlatency-5.15Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-nvidia-64kUpgrade linux-image-intel-iotgUpgrade linux-image-gkeopUpgrade linux-image-azure-lts-22.04Upgrade linux-image-azure-fips-5.4Upgrade linux-image-6.8.0-71-generic-64kUpgrade linux-image-nvidia-tegraUpgrade linux-image-xilinx-zynqmp-5.4Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-oracle-lts-20.04Upgrade linux-image-azure-fips-5.15Upgrade linux-image-gcp-lts-20.04Upgrade linux-image-lowlatency-5.4Upgrade linux-image-intelUpgrade linux-image-gke-6.8Upgrade linux-image-5.4.0-1123-fipsUpgrade linux-image-5.4.0-1108-bluefieldUpgrade linux-image-6.14.0-27-generic-64kUpgrade linux-image-5.15.0-1094-azureUpgrade linux-image-5.15.0-1086-gkeUpgrade linux-image-nvidia-6.8Upgrade linux-image-virtual-6.14Upgrade linux-image-virtual-5.4Upgrade linux-image-realtime-5.15Upgrade linux-image-raspi-hwe-18.04Upgrade linux-image-oem-6.14Upgrade linux-image-aws-64kUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-6.8.0-65-lowlatencyUpgrade linux-image-6.8.0-1034-azure-fdeUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-aws-5.15Upgrade linux-image-5.15.0-145-lowlatencyUpgrade linux-image-5.15.0-1071-gkeopUpgrade linux-image-6.14.0-1012-gcp-64kUpgrade linux-image-5.4.0-1152-gcpUpgrade linux-image-5.15.0-1089-aws-64kUpgrade linux-image-6.8.0-1034-azureUpgrade linux-image-oracleUpgrade linux-image-oem-osp1Upgrade linux-image-generic-64k-6.14Upgrade linux-image-genericUpgrade linux-image-snapdragon-5.4Upgrade linux-image-oem-22.04Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-oem-22.04dUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-6.14.0-1010-awsUpgrade linux-image-5.4.0-220-lowlatencyUpgrade linux-image-5.4.0-1132-raspiUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.15.0-1031-nvidia-tegra-igx-rtUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-5.4.0-1152-gcp-fipsUpgrade linux-image-generic-lpaeUpgrade linux-image-5.15.0-151-generic-64kUpgrade linux-image-azure-fde-6.8Upgrade linux-image-oem-20.04bUpgrade linux-image-realtimeUpgrade linux-image-nvidia-tegra-igx-rt | Jun 26, 2025 | Jun 20, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 16, 2025 | Jun 20, 2025 |
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