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Vulnerability · Published May 28, 2026 · Assigned by canonical

CVE-2026-47333Out-of-bounds read in Ubuntu Linux AppArmor notification handling

High 7.8

In plain English

A high-severity out-of-bounds read in Ubuntu Linux from Canonical. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.1%top 98.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:24.04:LTSlinux6.8.0-124.124USN-8373-1
Ubuntu:24.04:LTSlinux6.8.0-124.124UBUNTU-CVE-2026-47333
Ubuntu:25.10linux6.17.0-35.35UBUNTU-CVE-2026-47333
Ubuntu:25.10linux6.17.0-35.35USN-8371-1
Ubuntu:26.04:LTSlinux7.0.0-22.22USN-8370-1
Ubuntu:26.04:LTSlinux7.0.0-22.22UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-aws6.8.0-1057.60UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-aws6.8.0-1057.60USN-8373-1
Ubuntu:25.10linux-aws6.17.0-1017.17UBUNTU-CVE-2026-47333
Ubuntu:25.10linux-aws6.17.0-1017.17USN-8371-1
Ubuntu:26.04:LTSlinux-aws7.0.0-1006.6USN-8370-1
Ubuntu:26.04:LTSlinux-aws7.0.0-1006.6UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-aws-6.176.17.0-1017.17~24.04.1UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-aws-6.176.17.0-1017.17~24.04.1USN-8374-1
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1057.60~22.04.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1057.60~22.04.1USN-8373-1
Ubuntu:24.04:LTSlinux-azure6.8.0-1058.64USN-8373-1
Ubuntu:24.04:LTSlinux-azure6.8.0-1058.64UBUNTU-CVE-2026-47333
Ubuntu:25.10linux-azure6.17.0-1017.17USN-8371-1
Ubuntu:25.10linux-azure6.17.0-1017.17UBUNTU-CVE-2026-47333
Ubuntu:26.04:LTSlinux-azure7.0.0-1007.7USN-8461-1
Ubuntu:26.04:LTSlinux-azure7.0.0-1007.7UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1017.17~24.04.1USN-8371-1
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1017.17~24.04.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1059.65~22.04.1UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2026-47333
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-47333
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1006.6UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-gcp6.8.0-1060.63UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-gcp6.8.0-1060.63USN-8373-1
Ubuntu:25.10linux-gcp6.17.0-1018.19UBUNTU-CVE-2026-47333
Ubuntu:25.10linux-gcp6.17.0-1018.19USN-8374-1
Ubuntu:26.04:LTSlinux-gcp7.0.0-1005.5USN-8370-1
Ubuntu:26.04:LTSlinux-gcp7.0.0-1005.5UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1018.19~24.04.1USN-8374-1
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1018.19~24.04.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1060.63~22.04.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1060.63~22.04.1USN-8373-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1055.61UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-gke6.8.0-1055.61USN-8373-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1042.45UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1042.45USN-8373-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-35.35~24.04.1UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-35.35~24.04.1USN-8371-1
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-124.124~22.04.1USN-8373-1
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-124.124~22.04.1UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-28.28~24.04.1UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-ibm6.8.0-1057.58USN-8373-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1057.58UBUNTU-CVE-2026-47333
Ubuntu:26.04:LTSlinux-ibm7.0.0-1007.7USN-8370-1
Ubuntu:26.04:LTSlinux-ibm7.0.0-1007.7UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1057.58~22.04.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1057.58~22.04.1USN-8373-1
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-134.134.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-134.134.1~22.04.1UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1055.58UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1055.58USN-8373-1
Ubuntu:26.04:LTSlinux-nvidia7.0.0-1009.9USN-8370-1
Ubuntu:26.04:LTSlinux-nvidia7.0.0-1009.9UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1021.21USN-8371-1
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1021.21UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1055.58~22.04.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1055.58~22.04.1USN-8373-1
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1055.58.1UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1055.58.1USN-8373-1
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1026.26UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1026.26USN-8373-1
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1024.24USN-8371-1
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1024.24UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-47333
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1008.8UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-oracle6.8.0-1054.55USN-8373-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1054.55UBUNTU-CVE-2026-47333
Ubuntu:25.10linux-oracle6.17.0-1016.16USN-8371-1
Ubuntu:25.10linux-oracle6.17.0-1016.16UBUNTU-CVE-2026-47333
Ubuntu:26.04:LTSlinux-oracle7.0.0-1005.5USN-8370-1
Ubuntu:26.04:LTSlinux-oracle7.0.0-1005.5UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1016.16~24.04.1USN-8371-1
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1016.16~24.04.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1054.55~22.04.1USN-8373-1
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1054.55~22.04.1UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-raspi6.8.0-1057.61UBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-raspi6.8.0-1057.61USN-8373-1
Ubuntu:25.10linux-raspi6.17.0-1018.18USN-8371-1
Ubuntu:25.10linux-raspi6.17.0-1018.18UBUNTU-CVE-2026-47333
Ubuntu:26.04:LTSlinux-raspi7.0.0-1011.11UBUNTU-CVE-2026-47333
Ubuntu:26.04:LTSlinux-raspi7.0.0-1011.11USN-8370-1
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-47333
Ubuntu:25.10linux-realtime6.17.0-1014.16USN-8371-1
Ubuntu:25.10linux-realtime6.17.0-1014.16UBUNTU-CVE-2026-47333
Ubuntu:26.04:LTSlinux-realtime7.0.0-22.22.1UBUNTU-CVE-2026-47333
Ubuntu:26.04:LTSlinux-realtime7.0.0-22.22.1USN-8370-1
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-47333
Ubuntu:25.10linux-riscv6.17.0-35.35.1UBUNTU-CVE-2026-47333
Ubuntu:26.04:LTSlinux-riscv7.0.0-22.22.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-riscv-6.176.17.0-35.35.1~24.04.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-124.124~22.04.1UBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-47333
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-47333
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1032.33UBUNTU-CVE-2026-47333

Affected products (as reported)

VendorProductVersions
Canonical Ubuntu Linux 6.8.0 – before 6.8.0-124.1246.17.0 – before 6.17.0-35.357.0.0 – before 7.0.0-22.22

Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References