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Vulnerability · Published May 28, 2026 · Assigned by canonical

CVE-2026-47330Use of uninitialized value in Ubuntu Linux AppArmor notification handling

Low 3.3

In plain English

A low-severity security flaw 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 0% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)<0.1%top 99.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an uninitialized variable in notification handling code. The bug can be triggered by an unprivileged local user and can result in the incorrect caching of AppArmor notification responses.

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-2026-47330
Ubuntu:25.10linux6.17.0-35.35UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-aws6.8.0-1057.60UBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-aws6.8.0-1057.60USN-8373-1
Ubuntu:25.10linux-aws6.17.0-1017.17UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-aws-6.176.17.0-1017.17~24.04.1UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1057.60~22.04.1UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:25.10linux-azure6.17.0-1017.17USN-8371-1
Ubuntu:25.10linux-azure6.17.0-1017.17UBUNTU-CVE-2026-47330
Ubuntu:26.04:LTSlinux-azure7.0.0-1007.7USN-8461-1
Ubuntu:26.04:LTSlinux-azure7.0.0-1007.7UBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1059.65~22.04.1UBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2026-47330
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-47330
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1006.6UBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-gcp6.8.0-1060.63UBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-gcp6.8.0-1060.63USN-8373-1
Ubuntu:25.10linux-gcp6.17.0-1018.19UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1060.63~22.04.1UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:24.04:LTSlinux-gke6.8.0-1055.61USN-8373-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1042.45UBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1042.45USN-8373-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-35.35~24.04.1UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-28.28~24.04.1UBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-ibm6.8.0-1057.58USN-8373-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1057.58UBUNTU-CVE-2026-47330
Ubuntu:26.04:LTSlinux-ibm7.0.0-1007.7USN-8370-1
Ubuntu:26.04:LTSlinux-ibm7.0.0-1007.7UBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1057.58~22.04.1UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-134.134.1UBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-134.134.1~22.04.1UBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1055.58UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1055.58~22.04.1UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1055.58.1USN-8373-1
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1026.26UBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1026.26USN-8373-1
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-47330
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1008.8UBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-oracle6.8.0-1054.55USN-8373-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1054.55UBUNTU-CVE-2026-47330
Ubuntu:25.10linux-oracle6.17.0-1016.16USN-8371-1
Ubuntu:25.10linux-oracle6.17.0-1016.16UBUNTU-CVE-2026-47330
Ubuntu:26.04:LTSlinux-oracle7.0.0-1005.5USN-8370-1
Ubuntu:26.04:LTSlinux-oracle7.0.0-1005.5UBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:24.04:LTSlinux-raspi6.8.0-1057.61UBUNTU-CVE-2026-47330
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-2026-47330
Ubuntu:26.04:LTSlinux-raspi7.0.0-1011.11UBUNTU-CVE-2026-47330
Ubuntu:26.04:LTSlinux-raspi7.0.0-1011.11USN-8370-1
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-47330
Ubuntu:25.10linux-realtime6.17.0-1014.16USN-8371-1
Ubuntu:25.10linux-realtime6.17.0-1014.16UBUNTU-CVE-2026-47330
Ubuntu:26.04:LTSlinux-realtime7.0.0-22.22.1UBUNTU-CVE-2026-47330
Ubuntu:26.04:LTSlinux-realtime7.0.0-22.22.1USN-8370-1
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-47330
Ubuntu:25.10linux-riscv6.17.0-35.35.1UBUNTU-CVE-2026-47330
Ubuntu:26.04:LTSlinux-riscv7.0.0-22.22.1UBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-riscv-6.176.17.0-35.35.1~24.04.1UBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-124.124~22.04.1UBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-47330
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-47330
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1032.33UBUNTU-CVE-2026-47330

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-457 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References