CVE-2025-39990
bpf: Check the helper function is valid in get_helper_proto
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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/[email protected]
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 15, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
f470378c7562a2818b45ed11c98973f2b89eedd3 < 3d429cb1278e995e22995ef117fa96d223a67e93 f470378c7562a2818b45ed11c98973f2b89eedd3 < 6233715b4b714068d6c831d214a4e8792109875a f470378c7562a2818b45ed11c98973f2b89eedd3 < e4414b01c1cd9887bbde92f946c1ba94e40d6d64
Linux / Linux
5.8