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Vulnerability · Published May 28, 2026 · Assigned by canonical

CVE-2026-47337NULL pointer dereference in Ubuntu Linux AppArmor IPv4/IPv6 socket mediation

Low 3.3

In plain English

A low-severity null pointer dereference 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)3.3Low
Exploit odds (30 days)<0.1%top 99.4% 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 SAUCE patches with a possible NULL pointer dereference in the handling of AF_INET/AF_INET6 socket mediation. The bug can be triggered by an unprivileged local user. This can lead to a kernel oops.

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-2026-47337
Ubuntu:25.10linux6.17.0-35.35UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-aws6.8.0-1057.60UBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-aws6.8.0-1057.60USN-8373-1
Ubuntu:25.10linux-aws6.17.0-1017.17UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-aws-6.176.17.0-1017.17~24.04.1UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1057.60~22.04.1UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:25.10linux-azure6.17.0-1017.17USN-8371-1
Ubuntu:25.10linux-azure6.17.0-1017.17UBUNTU-CVE-2026-47337
Ubuntu:26.04:LTSlinux-azure7.0.0-1007.7USN-8461-1
Ubuntu:26.04:LTSlinux-azure7.0.0-1007.7UBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1059.65~22.04.1UBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2026-47337
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-47337
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1006.6UBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-gcp6.8.0-1060.63UBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-gcp6.8.0-1060.63USN-8373-1
Ubuntu:25.10linux-gcp6.17.0-1018.19UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1060.63~22.04.1UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:24.04:LTSlinux-gke6.8.0-1055.61USN-8373-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1042.45UBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1042.45USN-8373-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-35.35~24.04.1UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-28.28~24.04.1UBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-ibm6.8.0-1057.58USN-8373-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1057.58UBUNTU-CVE-2026-47337
Ubuntu:26.04:LTSlinux-ibm7.0.0-1007.7USN-8370-1
Ubuntu:26.04:LTSlinux-ibm7.0.0-1007.7UBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1057.58~22.04.1UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-134.134.1UBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-134.134.1~22.04.1UBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1055.58UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1055.58~22.04.1UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1055.58.1USN-8373-1
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1026.26UBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1026.26USN-8373-1
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-47337
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1008.8UBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-oracle6.8.0-1054.55USN-8373-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1054.55UBUNTU-CVE-2026-47337
Ubuntu:25.10linux-oracle6.17.0-1016.16USN-8371-1
Ubuntu:25.10linux-oracle6.17.0-1016.16UBUNTU-CVE-2026-47337
Ubuntu:26.04:LTSlinux-oracle7.0.0-1005.5USN-8370-1
Ubuntu:26.04:LTSlinux-oracle7.0.0-1005.5UBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:24.04:LTSlinux-raspi6.8.0-1057.61UBUNTU-CVE-2026-47337
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-2026-47337
Ubuntu:26.04:LTSlinux-raspi7.0.0-1011.11UBUNTU-CVE-2026-47337
Ubuntu:26.04:LTSlinux-raspi7.0.0-1011.11USN-8370-1
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-47337
Ubuntu:25.10linux-realtime6.17.0-1014.16USN-8371-1
Ubuntu:25.10linux-realtime6.17.0-1014.16UBUNTU-CVE-2026-47337
Ubuntu:26.04:LTSlinux-realtime7.0.0-22.22.1UBUNTU-CVE-2026-47337
Ubuntu:26.04:LTSlinux-realtime7.0.0-22.22.1USN-8370-1
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-47337
Ubuntu:25.10linux-riscv6.17.0-35.35.1UBUNTU-CVE-2026-47337
Ubuntu:26.04:LTSlinux-riscv7.0.0-22.22.1UBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-riscv-6.176.17.0-35.35.1~24.04.1UBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-124.124~22.04.1UBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-47337
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-47337
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1032.33UBUNTU-CVE-2026-47337

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-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References