CVE-2025-39990 (GCVE-0-2025-39990)
Vulnerability from cvelistv5
Published
2025-10-15 07:56
Modified
2026-10-21 12:37
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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
References
Impacted products
Vendor Product Version
Linux Linux Version: f470378c7562a2818b45ed11c98973f2b89eedd3
Version: f470378c7562a2818b45ed11c98973f2b89eedd3
Version: f470378c7562a2818b45ed11c98973f2b89eedd3
Version: f470378c7562a2818b45ed11c98973f2b89eedd3
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