{
  "cveId": "CVE-2025-39990",
  "url": "https://patchblox.com/security/cve/CVE-2025-39990",
  "summary": "CVE-2025-39990 is fixed in 35 products on 1 platform, first by DEBIAN-CVE-2025-39990, released October 15, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "bpf: Check the helper function is valid in get_helper_proto",
  "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",
  "published": "2025-10-15T08:15:37Z",
  "severity": "Moderate",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00198,
  "epssPercentile": 0.09631,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-39990",
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}