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Vulnerability · Published Oct 15, 2025 · Assigned by Linux

CVE-2025-39990bpf: Check the helper function is valid in get_helper_proto

High 7.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 90.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: bpf: Check the helper function is valid in get_helper_proto kernel test robot reported verifier bug [1] where the helper func pointer could be NULL due to disabled config option. As Alexei suggested we could check on that in get_helper_proto directly. Marking tail_call helper func with BPF_PTR_POISON, because it is unused by design. [1] https://lore.kernel.org/oe-lkp/202507160818.68358831-lkp@intel.com

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2025-39990
Debian:13linux6.12.57-1DEBIAN-CVE-2025-39990
Debian:14linux6.16.10-1DEBIAN-CVE-2025-39990
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-39990
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1035.38UBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2025-39990
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2025-39990
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2025-39990

Affected products (as reported)

VendorProductVersions
Linux Linux f470378c7562a2818b45ed11c98973f2b89eedd3 – before dfbff47f120e4b0793ca0e0b8660361ccac25a74f470378c7562a2818b45ed11c98973f2b89eedd3 – before 3d429cb1278e995e22995ef117fa96d223a67e93f470378c7562a2818b45ed11c98973f2b89eedd3 – before 6233715b4b714068d6c831d214a4e8792109875af470378c7562a2818b45ed11c98973f2b89eedd3 – before e4414b01c1cd9887bbde92f946c1ba94e40d6d64
Linux Linux 5.8

References