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CVE-2025-39990

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CVE-2025-39990

Published: Oct 15, 2025

Modified: May 11, 2026

PUBLISHED

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/[email protected]

VendorProductVersions

Linux

Linux

affected
f470378c7562a2818b45ed11c98973f2b89eedd3 - < 3d429cb1278e995e22995ef117fa96d223a67e93
affected
f470378c7562a2818b45ed11c98973f2b89eedd3 - < 6233715b4b714068d6c831d214a4e8792109875a
affected
f470378c7562a2818b45ed11c98973f2b89eedd3 - < e4414b01c1cd9887bbde92f946c1ba94e40d6d64

Linux

Linux

affected
5.8
unaffected
0 - < 5.8
unaffected
6.12.50 - <= 6.12.*
unaffected
6.16.10 - <= 6.16.*
unaffected
6.17 - <= *

References

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