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CVE-2026-47326

Fixed in a distro release EPSS <1%CVSS 5.5

Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a memory leak in the handling of big responses to AppArmor notifications. The bug can be triggered by an unprivileged local user. The memory leak could lead to resource exhaustion.

Published 2026-05-28 · CVE record · OSV

Products: canonical ubuntu_linux

Distro releases

ReleasePackageFixed in
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
Ubuntu 20.04 LTSlinux-hwe-5.11no fix
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
Ubuntu 20.04 LTSlinux-riscv-5.11no fix
Ubuntu 20.04 LTSlinux-riscv-5.8no fix
Ubuntu 22.04 LTSlinux-allwinner-5.19no fix
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-6.86.8.0-1057.60~22.04.1
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-6.86.8.0-1059.65~22.04.1
Ubuntu 22.04 LTSlinux-azure-fde-5.19no fix
Ubuntu 22.04 LTSlinux-azure-fde-6.2no fix
Ubuntu 22.04 LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1
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-6.86.8.0-1060.63~22.04.1
Ubuntu 22.04 LTSlinux-hwe-5.19no fix
Ubuntu 22.04 LTSlinux-hwe-6.2no fix
Ubuntu 22.04 LTSlinux-hwe-6.5no fix
Ubuntu 22.04 LTSlinux-hwe-6.86.8.0-124.124~22.04.1
Ubuntu 22.04 LTSlinux-ibm-6.86.8.0-1057.58~22.04.1
Ubuntu 22.04 LTSlinux-intel-iot-realtimeno fix
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-6.86.8.0-134.134.1~22.04.1
Ubuntu 22.04 LTSlinux-nvidia-6.2no fix
Ubuntu 22.04 LTSlinux-nvidia-6.5no fix
Ubuntu 22.04 LTSlinux-nvidia-6.86.8.0-1055.58~22.04.1
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-oracle-6.5no fix
Ubuntu 22.04 LTSlinux-oracle-6.86.8.0-1054.55~22.04.1
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-6.86.8.0-124.124~22.04.1
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 24.04 LTSlinux6.8.0-124.124
Ubuntu 24.04 LTSlinux-aws6.8.0-1057.60
Ubuntu 24.04 LTSlinux-aws-6.14no fix
Ubuntu 24.04 LTSlinux-aws-6.176.17.0-1017.17~24.04.1
Ubuntu 24.04 LTSlinux-azure6.8.0-1058.64
Ubuntu 24.04 LTSlinux-azure-6.11no fix
Ubuntu 24.04 LTSlinux-azure-6.176.17.0-1017.17~24.04.1
Ubuntu 24.04 LTSlinux-azure-fde6.8.0-1058.65
Ubuntu 24.04 LTSlinux-azure-nvidiano fix
Ubuntu 24.04 LTSlinux-gcp6.8.0-1060.63
Ubuntu 24.04 LTSlinux-gcp-6.11no fix
Ubuntu 24.04 LTSlinux-gcp-6.14no fix
Ubuntu 24.04 LTSlinux-gcp-6.176.17.0-1018.19~24.04.1
Ubuntu 24.04 LTSlinux-gke6.8.0-1055.61
Ubuntu 24.04 LTSlinux-gkeop6.8.0-1042.45
Ubuntu 24.04 LTSlinux-hwe-6.11no fix
Ubuntu 24.04 LTSlinux-hwe-6.14no fix
Ubuntu 24.04 LTSlinux-hwe-6.176.17.0-35.35~24.04.1
Ubuntu 24.04 LTSlinux-hwe-7.07.0.0-28.28~24.04.1
Ubuntu 24.04 LTSlinux-ibm6.8.0-1057.58
Ubuntu 24.04 LTSlinux-lowlatency6.8.0-134.134.1
Ubuntu 24.04 LTSlinux-lowlatency-hwe-6.11no fix
Ubuntu 24.04 LTSlinux-nvidia6.8.0-1055.58
Ubuntu 24.04 LTSlinux-nvidia-6.11no fix
Ubuntu 24.04 LTSlinux-nvidia-6.176.17.0-1021.21
Ubuntu 24.04 LTSlinux-nvidia-lowlatency6.8.0-1055.58.1
Ubuntu 24.04 LTSlinux-nvidia-tegra6.8.0-1026.26
Ubuntu 24.04 LTSlinux-oem-6.11no fix
Ubuntu 24.04 LTSlinux-oem-6.14no fix
Ubuntu 24.04 LTSlinux-oem-6.176.17.0-1024.24
Ubuntu 24.04 LTSlinux-oem-6.8no fix
Ubuntu 24.04 LTSlinux-oracle6.8.0-1054.55
Ubuntu 24.04 LTSlinux-oracle-6.14no fix
Ubuntu 24.04 LTSlinux-oracle-6.176.17.0-1016.16~24.04.1
Ubuntu 24.04 LTSlinux-raspi6.8.0-1057.61
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-6.176.17.0-35.35.1~24.04.1
Ubuntu 24.04 LTSlinux-xilinx6.8.0-1032.33
Ubuntu 25.10linux6.17.0-35.35
Ubuntu 25.10linux-aws6.17.0-1017.17
Ubuntu 25.10linux-azure6.17.0-1017.17
Ubuntu 25.10linux-azure-fdeno fix
Ubuntu 25.10linux-gcp6.17.0-1018.19
Ubuntu 25.10linux-oracle6.17.0-1016.16
Ubuntu 25.10linux-raspi6.17.0-1018.18
Ubuntu 25.10linux-realtime6.17.0-1014.16
Ubuntu 25.10linux-riscv6.17.0-35.35.1
Ubuntu 26.04 LTSlinux7.0.0-22.22
Ubuntu 26.04 LTSlinux-aws7.0.0-1006.6
Ubuntu 26.04 LTSlinux-azure7.0.0-1007.7
Ubuntu 26.04 LTSlinux-azure-fde7.0.0-1006.6
Ubuntu 26.04 LTSlinux-gcp7.0.0-1005.5
Ubuntu 26.04 LTSlinux-ibm7.0.0-1007.7
Ubuntu 26.04 LTSlinux-nvidia7.0.0-1009.9
Ubuntu 26.04 LTSlinux-oem-7.07.0.0-1008.8
Ubuntu 26.04 LTSlinux-oracle7.0.0-1005.5
Ubuntu 26.04 LTSlinux-raspi7.0.0-1011.11
Ubuntu 26.04 LTSlinux-realtime7.0.0-22.22.1
Ubuntu 26.04 LTSlinux-riscv7.0.0-22.22.1
Ubuntu Nvidia-BlueField 24.04 LTSlinux-bluefield6.8.0-1023.27
Ubuntu Pro FIPS-updates 24.04 LTSlinux-aws-fips6.8.0-1057.60+fips1
Ubuntu Pro FIPS-updates 24.04 LTSlinux-azure-fips6.8.0-1059.65+fips1
Ubuntu Pro FIPS-updates 24.04 LTSlinux-fips6.8.0-124.124+fips1
Ubuntu Pro FIPS-updates 24.04 LTSlinux-gcp-fips6.8.0-1060.63+fips1
Ubuntu Pro Realtime 22.04 LTSlinux-realtime-6.86.8.1-1052.53~22.04.1
Ubuntu Pro Realtime 24.04 LTSlinux-raspi-realtime6.8.0-2046.47
Ubuntu Pro Realtime 24.04 LTSlinux-realtime6.8.1-1052.53
Ubuntu Pro Realtime 24.04 LTSlinux-realtime-6.14no fix
Ubuntu Pro Realtime 24.04 LTSlinux-realtime-6.176.17.0-1014.16~24.04.1