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CVE-2026-46026

Fixed in a distro release EPSS <1%

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Limit the maximum number of lookups Current code does no bound checking on the number of lookups a client can perform. Though the code restricts the lookups to local clients, there is still a possibility of a malicious local client sending a flood of NEW_LOOKUP messages over the same socket. Fix this issue by limiting the maximum number of lookups to 64 globally. Since the nameserver allows only atmost one local observer, this global lookup count will ensure that the lookups stay within the limit. Note that, limit of 64 is chosen based on the current platform requirements. If requirement changes in the future, this limit can be increased.

Published 2026-05-27 · CVE record · OSV

Products: Linux, Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Distro releases

ReleasePackageFixed in
Debian 12linux6.1.176-1
Debian 13linux6.12.86-1
Debian 14linux7.0.4-1
SUSE Linux Enterprise High Availability Extension 15 SP7kernel-default6.4.0-150700.53.78.1
SUSE Linux Enterprise High Availability Extension 16.0kernel-default6.12.0-160000.37.1
SUSE Linux Enterprise Live Patching 15 SP7kernel-default6.4.0-150700.53.78.1
SUSE Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7-RT_Update_191-150700.1.5.1
SUSE Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_201-150700.15.3.2
SUSE Linux Enterprise Module for Basesystem 15 SP7kernel-64kb6.4.0-150700.53.78.1
SUSE Linux Enterprise Module for Basesystem 15 SP7kernel-default6.4.0-150700.53.78.1
SUSE Linux Enterprise Module for Basesystem 15 SP7kernel-default-base6.4.0-150700.53.78.1.150700.17.43.2
SUSE Linux Enterprise Module for Basesystem 15 SP7kernel-source6.4.0-150700.53.78.1
SUSE Linux Enterprise Module for Basesystem 15 SP7kernel-zfcpdump6.4.0-150700.53.78.1
SUSE Linux Enterprise Module for Development Tools 15 SP7kernel-docs6.4.0-150700.53.78.1
SUSE Linux Enterprise Module for Development Tools 15 SP7kernel-obs-build6.4.0-150700.53.78.1
SUSE Linux Enterprise Module for Development Tools 15 SP7kernel-source6.4.0-150700.53.78.1
SUSE Linux Enterprise Module for Development Tools 15 SP7kernel-syms6.4.0-150700.53.78.1
SUSE Linux Enterprise Module for Legacy 15 SP7kernel-default6.4.0-150700.53.78.1
SUSE Linux Enterprise Module for Public Cloud 15 SP7kernel-azure6.4.0-150700.53.78.1
SUSE Linux Enterprise Server 16.0kernel-64kb6.12.0-160000.37.1
SUSE Linux Enterprise Server 16.0kernel-azure6.12.0-160000.37.1
SUSE Linux Enterprise Server 16.0kernel-default6.12.0-160000.37.1
SUSE Linux Enterprise Server 16.0kernel-default-base6.12.0-160000.37.1.160000.2.19
SUSE Linux Enterprise Server 16.0kernel-docs6.12.0-160000.37.1
SUSE Linux Enterprise Server 16.0kernel-kvmsmall6.12.0-160000.37.1
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SUSE Linux Enterprise Server 16.0kernel-source6.12.0-160000.37.1
SUSE Linux Enterprise Server 16.0kernel-syms6.12.0-160000.37.1
SUSE Linux Enterprise Server 16.0kernel-zfcpdump6.12.0-160000.37.1
SUSE Linux Enterprise Server for SAP applications 16.0kernel-64kb6.12.0-160000.37.1
SUSE Linux Enterprise Server for SAP applications 16.0kernel-azure6.12.0-160000.37.1
SUSE Linux Enterprise Server for SAP applications 16.0kernel-default6.12.0-160000.37.1
SUSE Linux Enterprise Server for SAP applications 16.0kernel-default-base6.12.0-160000.37.1.160000.2.19
SUSE Linux Enterprise Server for SAP applications 16.0kernel-docs6.12.0-160000.37.1
SUSE Linux Enterprise Server for SAP applications 16.0kernel-kvmsmall6.12.0-160000.37.1
SUSE Linux Enterprise Server for SAP applications 16.0kernel-obs-qa6.12.0-160000.37.1
SUSE Linux Enterprise Server for SAP applications 16.0kernel-source6.12.0-160000.37.1
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SUSE Linux Enterprise Workstation Extension 15 SP7kernel-default6.4.0-150700.53.78.1
SUSE Linux Micro 6.0kernel-default6.4.0-51.1
SUSE Linux Micro 6.0kernel-kvmsmall6.4.0-51.1
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SUSE Linux Micro 6.0kernel-source6.4.0-51.1
SUSE Linux Micro 6.0kernel-source-rt6.4.0-51.1
SUSE Linux Micro 6.1kernel-default6.4.0-51.1
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SUSE Linux Micro 6.1kernel-rt6.4.0-51.1
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SUSE Linux Micro 6.1kernel-source-rt6.4.0-51.1
SUSE Linux Micro 6.2kernel-64kb6.12.0-160000.37.1
SUSE Linux Micro 6.2kernel-default6.12.0-160000.37.1
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SUSE Linux Micro 6.2kernel-source6.12.0-160000.37.1
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Ubuntu 16.04 LTSlinux-hwe-edgeno fix
Ubuntu 18.04 LTSlinux-aws-5.0no fix
Ubuntu 18.04 LTSlinux-aws-5.3no fix
Ubuntu 18.04 LTSlinux-azureno fix
Ubuntu 18.04 LTSlinux-azure-5.3no fix
Ubuntu 18.04 LTSlinux-azure-edgeno fix
Ubuntu 18.04 LTSlinux-gcpno fix
Ubuntu 18.04 LTSlinux-gcp-5.3no fix
Ubuntu 18.04 LTSlinux-gke-4.15no fix
Ubuntu 18.04 LTSlinux-gke-5.4no fix
Ubuntu 18.04 LTSlinux-gkeop-5.4no fix
Ubuntu 18.04 LTSlinux-hweno fix
Ubuntu 18.04 LTSlinux-hwe-edgeno fix
Ubuntu 18.04 LTSlinux-oemno fix
Ubuntu 18.04 LTSlinux-oracle-5.0no fix
Ubuntu 18.04 LTSlinux-oracle-5.3no fix
Ubuntu 20.04 LTSlinux-aws-5.11no fix
Ubuntu 20.04 LTSlinux-aws-5.13no fix
Ubuntu 20.04 LTSlinux-aws-5.8no fix
Ubuntu 20.04 LTSlinux-azure-5.11no fix
Ubuntu 20.04 LTSlinux-azure-5.13no fix
Ubuntu 20.04 LTSlinux-azure-5.8no fix
Ubuntu 20.04 LTSlinux-azure-fdeno fix
Ubuntu 20.04 LTSlinux-gcp-5.11no fix
Ubuntu 20.04 LTSlinux-gcp-5.13no fix
Ubuntu 20.04 LTSlinux-gcp-5.8no fix
Ubuntu 20.04 LTSlinux-gkeno fix
Ubuntu 20.04 LTSlinux-gke-5.15no fix
Ubuntu 20.04 LTSlinux-gkeopno fix
Ubuntu 20.04 LTSlinux-gkeop-5.15no fix
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Ubuntu 20.04 LTSlinux-hwe-5.13no fix
Ubuntu 20.04 LTSlinux-hwe-5.8no fix
Ubuntu 20.04 LTSlinux-intel-5.13no fix
Ubuntu 20.04 LTSlinux-oem-5.10no fix
Ubuntu 20.04 LTSlinux-oem-5.13no fix
Ubuntu 20.04 LTSlinux-oem-5.14no fix
Ubuntu 20.04 LTSlinux-oem-5.6no fix
Ubuntu 20.04 LTSlinux-oracle-5.11no fix
Ubuntu 20.04 LTSlinux-oracle-5.13no fix
Ubuntu 20.04 LTSlinux-oracle-5.8no fix
Ubuntu 20.04 LTSlinux-raspi2no fix
Ubuntu 20.04 LTSlinux-riscvno fix
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Ubuntu 20.04 LTSlinux-riscv-5.8no fix
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Ubuntu 22.04 LTSlinux-allwinner-5.19no fix
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Ubuntu 22.04 LTSlinux-aws-5.19no fix
Ubuntu 22.04 LTSlinux-aws-6.2no fix
Ubuntu 22.04 LTSlinux-aws-6.5no fix
Ubuntu 22.04 LTSlinux-aws-6.86.8.0-1061.64~22.04.1
Ubuntu 22.04 LTSlinux-azure5.15.0-1123.132
Ubuntu 22.04 LTSlinux-azure-5.19no fix
Ubuntu 22.04 LTSlinux-azure-6.2no fix
Ubuntu 22.04 LTSlinux-azure-6.5no fix
Ubuntu 22.04 LTSlinux-azure-6.86.8.0-1063.71~22.04.1
Ubuntu 22.04 LTSlinux-azure-fde5.15.0-1122.131
Ubuntu 22.04 LTSlinux-azure-fde-5.19no fix
Ubuntu 22.04 LTSlinux-azure-fde-6.2no fix
Ubuntu 22.04 LTSlinux-azure-fde-6.86.8.0-1062.69~22.04.1
Ubuntu 22.04 LTSlinux-gcp5.15.0-1118.128
Ubuntu 22.04 LTSlinux-gcp-5.19no fix
Ubuntu 22.04 LTSlinux-gcp-6.2no fix
Ubuntu 22.04 LTSlinux-gcp-6.5no fix
Ubuntu 22.04 LTSlinux-gcp-6.86.8.0-1064.72~22.04.1
Ubuntu 22.04 LTSlinux-gke5.15.0-1113.119
Ubuntu 22.04 LTSlinux-gkeop5.15.0-1100.108
Ubuntu 22.04 LTSlinux-hwe-5.19no fix
Ubuntu 22.04 LTSlinux-hwe-6.2no fix
Ubuntu 22.04 LTSlinux-hwe-6.5no fix
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Ubuntu 22.04 LTSlinux-ibm5.15.0-1111.115
Ubuntu 22.04 LTSlinux-ibm-6.86.8.0-1061.62~22.04.1
Ubuntu 22.04 LTSlinux-intel-iot-realtimeno fix
Ubuntu 22.04 LTSlinux-intel-iotg5.15.0-1112.118
Ubuntu 22.04 LTSlinux-kvm5.15.0-1109.114
Ubuntu 22.04 LTSlinux-lowlatency5.15.0-195.205
Ubuntu 22.04 LTSlinux-lowlatency-hwe-5.19no fix
Ubuntu 22.04 LTSlinux-lowlatency-hwe-6.2no fix
Ubuntu 22.04 LTSlinux-lowlatency-hwe-6.5no fix
Ubuntu 22.04 LTSlinux-lowlatency-hwe-6.86.8.0-136.136.2~22.04.1
Ubuntu 22.04 LTSlinux-nvidia5.15.0-1112.113
Ubuntu 22.04 LTSlinux-nvidia-6.2no fix
Ubuntu 22.04 LTSlinux-nvidia-6.5no fix
Ubuntu 22.04 LTSlinux-nvidia-6.86.8.0-1059.62~22.04.1
Ubuntu 22.04 LTSlinux-nvidia-tegrano fix
Ubuntu 22.04 LTSlinux-nvidia-tegra-igxno fix
Ubuntu 22.04 LTSlinux-oem-5.17no fix
Ubuntu 22.04 LTSlinux-oem-6.0no fix
Ubuntu 22.04 LTSlinux-oem-6.1no fix
Ubuntu 22.04 LTSlinux-oem-6.5no fix
Ubuntu 22.04 LTSlinux-oracle5.15.0-1114.120
Ubuntu 22.04 LTSlinux-oracle-6.5no fix
Ubuntu 22.04 LTSlinux-oracle-6.86.8.0-1058.61~22.04.1
Ubuntu 22.04 LTSlinux-raspino fix
Ubuntu 22.04 LTSlinux-realtimeno fix
Ubuntu 22.04 LTSlinux-riscvno fix
Ubuntu 22.04 LTSlinux-riscv-5.19no fix
Ubuntu 22.04 LTSlinux-riscv-6.5no fix
Ubuntu 22.04 LTSlinux-riscv-6.86.8.0-136.136~22.04.3
Ubuntu 22.04 LTSlinux-starfive-5.19no fix
Ubuntu 22.04 LTSlinux-starfive-6.2no fix
Ubuntu 22.04 LTSlinux-starfive-6.5no fix
Ubuntu 22.04 LTSlinux-xilinx-zynqmp5.15.0-1080.84
Ubuntu 24.04 LTSlinux6.8.0-136.136
Ubuntu 24.04 LTSlinux-aws6.8.0-1061.64
Ubuntu 24.04 LTSlinux-aws-6.14no fix
Ubuntu 24.04 LTSlinux-aws-6.17no fix
Ubuntu 24.04 LTSlinux-azure6.8.0-1063.71
Ubuntu 24.04 LTSlinux-azure-6.11no fix
Ubuntu 24.04 LTSlinux-azure-6.14no fix
Ubuntu 24.04 LTSlinux-azure-6.17no fix
Ubuntu 24.04 LTSlinux-azure-fde6.8.0-1062.69
Ubuntu 24.04 LTSlinux-azure-fde-6.14no fix
Ubuntu 24.04 LTSlinux-azure-nvidiano fix
Ubuntu 24.04 LTSlinux-azure-nvidia-6.14no fix
Ubuntu 24.04 LTSlinux-gcp6.8.0-1064.72
Ubuntu 24.04 LTSlinux-gcp-6.11no fix
Ubuntu 24.04 LTSlinux-gcp-6.14no fix
Ubuntu 24.04 LTSlinux-gcp-6.17no fix
Ubuntu 24.04 LTSlinux-gke6.8.0-1059.67
Ubuntu 24.04 LTSlinux-gkeop6.8.0-1046.50
Ubuntu 24.04 LTSlinux-hwe-6.11no fix
Ubuntu 24.04 LTSlinux-hwe-6.14no fix
Ubuntu 24.04 LTSlinux-hwe-6.17no fix
Ubuntu 24.04 LTSlinux-hwe-7.07.0.0-28.28~24.04.1
Ubuntu 24.04 LTSlinux-ibm6.8.0-1061.62
Ubuntu 24.04 LTSlinux-lowlatency6.8.0-136.136.2
Ubuntu 24.04 LTSlinux-lowlatency-hwe-6.11no fix
Ubuntu 24.04 LTSlinux-nvidia6.8.0-1059.62
Ubuntu 24.04 LTSlinux-nvidia-6.11no fix
Ubuntu 24.04 LTSlinux-nvidia-6.17no fix
Ubuntu 24.04 LTSlinux-nvidia-lowlatency6.8.0-1059.62.1
Ubuntu 24.04 LTSlinux-nvidia-tegra6.8.0-1030.31
Ubuntu 24.04 LTSlinux-oem-6.11no fix
Ubuntu 24.04 LTSlinux-oem-6.14no fix
Ubuntu 24.04 LTSlinux-oem-6.17no fix
Ubuntu 24.04 LTSlinux-oem-6.8no fix
Ubuntu 24.04 LTSlinux-oracle6.8.0-1058.61
Ubuntu 24.04 LTSlinux-oracle-6.14no fix
Ubuntu 24.04 LTSlinux-oracle-6.17no fix
Ubuntu 24.04 LTSlinux-raspi6.8.0-1061.65
Ubuntu 24.04 LTSlinux-raspi-realtimeno fix
Ubuntu 24.04 LTSlinux-realtimeno fix
Ubuntu 24.04 LTSlinux-riscvno fix
Ubuntu 24.04 LTSlinux-riscv-6.14no fix
Ubuntu 24.04 LTSlinux-riscv-6.17no fix
Ubuntu 24.04 LTSlinux-xilinx6.8.0-1033.34
Ubuntu 25.10linuxno fix
Ubuntu 25.10linux-awsno fix
Ubuntu 25.10linux-azureno fix
Ubuntu 25.10linux-azure-fdeno fix
Ubuntu 25.10linux-gcpno fix
Ubuntu 25.10linux-oracleno fix
Ubuntu 25.10linux-raspino fix
Ubuntu 25.10linux-realtimeno fix
Ubuntu 25.10linux-riscvno fix
Ubuntu 26.04 LTSlinux7.0.0-27.27
Ubuntu 26.04 LTSlinux-aws7.0.0-1008.8
Ubuntu 26.04 LTSlinux-azure7.0.0-1010.10
Ubuntu 26.04 LTSlinux-azure-fde7.0.0-1009.9
Ubuntu 26.04 LTSlinux-gcp7.0.0-1007.7
Ubuntu 26.04 LTSlinux-ibm7.0.0-1009.9
Ubuntu 26.04 LTSlinux-nvidia7.0.0-1013.13
Ubuntu 26.04 LTSlinux-oem-7.07.0.0-1008.8
Ubuntu 26.04 LTSlinux-oracle7.0.0-1007.7
Ubuntu 26.04 LTSlinux-raspi7.0.0-1014.14
Ubuntu 26.04 LTSlinux-realtime7.0.0-27.27.1
Ubuntu 26.04 LTSlinux-riscv7.0.0-27.27.1
Ubuntu Nvidia-BlueField 22.04 LTSlinux-bluefield5.15.0-1101.103
Ubuntu Nvidia-BlueField 24.04 LTSlinux-bluefield6.8.0-1028.33
Ubuntu Pro 20.04 LTSlinux-aws-5.155.15.0-1117.124~20.04.1
Ubuntu Pro 20.04 LTSlinux-azure-5.155.15.0-1123.132~20.04.1
Ubuntu Pro 20.04 LTSlinux-azure-fde-5.155.15.0-1122.131~20.04.1
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Ubuntu Pro 20.04 LTSlinux-lowlatency-hwe-5.155.15.0-195.205~20.04.1
Ubuntu Pro 20.04 LTSlinux-nvidia-tegra-5.15no fix
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Ubuntu Pro 20.04 LTSlinux-riscv-5.155.15.0-1111.115~20.04.1
Ubuntu Pro FIPS-preview 22.04 LTSlinux-aws-fipsno fix
Ubuntu Pro FIPS-preview 22.04 LTSlinux-azure-fipsno fix
Ubuntu Pro FIPS-preview 22.04 LTSlinux-fipsno fix
Ubuntu Pro FIPS-preview 22.04 LTSlinux-gcp-fipsno fix
Ubuntu Pro FIPS-updates 22.04 LTSlinux-aws-fips5.15.0-1117.124+fips1
Ubuntu Pro FIPS-updates 22.04 LTSlinux-azure-fips5.15.0-1123.132+fips1
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Ubuntu Pro FIPS-updates 24.04 LTSlinux-azure-fips6.8.0-1063.71+fips2
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Ubuntu Pro FIPS-updates 24.04 LTSlinux-gcp-fips6.8.0-1064.72+fips1
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Ubuntu Pro Realtime 22.04 LTSlinux-realtime5.15.0-1116.125
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Ubuntu Pro Realtime 24.04 LTSlinux-raspi-realtime6.8.0-2050.52
Ubuntu Pro Realtime 24.04 LTSlinux-realtime6.8.1-1056.57
Ubuntu Pro Realtime 24.04 LTSlinux-realtime-6.14no fix
Ubuntu Pro Realtime 24.04 LTSlinux-realtime-6.17no fix
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