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CVE-2026-47333

Fixed in a distro release EPSS <1%CVSS 7.8

Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the size of an internal buffer, leading to a heap memory out-of-bounds read in notification handling code. The bug can be triggered by an unprivileged local user and can result in invalid data being processed by the AppArmor DFA policy engine.

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:16.04:LTSlinux4.4.0-284.318
Ubuntu:Pro:16.04:LTSlinux-aws4.4.0-1195.210
Ubuntu:Pro:16.04:LTSlinux-aws-hwe4.15.0-1195.208~16.04.1
Ubuntu:Pro:16.04:LTSlinux-azure4.15.0-1205.220~16.04.1
Ubuntu:Pro:16.04:LTSlinux-gcp4.15.0-1188.205~16.04.1
Ubuntu:Pro:16.04:LTSlinux-hwe4.15.0-254.266~16.04.1
Ubuntu:Pro:18.04:LTSlinux4.15.0-254.266
Ubuntu:Pro:18.04:LTSlinux-aws4.15.0-1195.208
Ubuntu:Pro:18.04:LTSlinux-azure-4.154.15.0-1205.220
Ubuntu:Pro:18.04:LTSlinux-gcp-4.154.15.0-1188.205
Ubuntu:Pro:18.04:LTSlinux-hwe-5.45.4.0-234.254~18.04.1
Ubuntu:Pro:18.04:LTSlinux-oracle4.15.0-1158.169
Ubuntu:Pro:20.04:LTSlinux5.4.0-234.254
Ubuntu:Pro:22.04:LTSlinux5.15.0-187.197
Ubuntu:Pro:22.04:LTSlinux-aws5.15.0-1113.120
Ubuntu:Pro:22.04:LTSlinux-aws-6.86.8.0-1061.64~22.04.1
Ubuntu:Pro:22.04:LTSlinux-azure5.15.0-1118.127
Ubuntu:Pro:22.04:LTSlinux-gcp5.15.0-1114.124
Ubuntu:Pro:22.04:LTSlinux-gcp-6.86.8.0-1064.72~22.04.1
Ubuntu:Pro:22.04:LTSlinux-gke5.15.0-1110.116
Ubuntu:Pro:22.04:LTSlinux-hwe-6.86.8.0-136.136~22.04.1
Ubuntu:Pro:22.04:LTSlinux-ibm5.15.0-1107.111
Ubuntu:Pro:22.04:LTSlinux-ibm-6.86.8.0-1061.62~22.04.1
Ubuntu:Pro:24.04:LTSlinux6.8.0-136.136
Ubuntu:Pro:24.04:LTSlinux-aws6.8.0-1061.64
Ubuntu:Pro:24.04:LTSlinux-azure6.8.0-1063.71
Ubuntu:Pro:24.04:LTSlinux-gcp6.8.0-1064.72
Ubuntu:Pro:24.04:LTSlinux-gke6.8.0-1059.67
Ubuntu:Pro:24.04:LTSlinux-ibm6.8.0-1061.62
Ubuntu:Pro:24.04:LTSlinux-oracle6.8.0-1058.61
Ubuntu:Pro:26.04:LTSlinux7.0.0-28.28
Ubuntu:Pro:26.04:LTSlinux-aws7.0.0-1009.9
Ubuntu:Pro:26.04:LTSlinux-azure7.0.0-1010.10
Ubuntu:Pro:26.04:LTSlinux-gcp7.0.0-1008.8
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