CVE-2025-39990
N/A
N/A
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
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f470378c7562a2818b45ed11c98973f2b89eedd3 < 3d429cb1278e995e22995ef117fa96d223a67e93 | affected |
| Linux | Linux | f470378c7562a2818b45ed11c98973f2b89eedd3 < 6233715b4b714068d6c831d214a4e8792109875a | affected |
| Linux | Linux | f470378c7562a2818b45ed11c98973f2b89eedd3 < e4414b01c1cd9887bbde92f946c1ba94e40d6d64 | affected |
| Linux | Linux | 5.8 | affected |
| Linux | Linux | 0 < 5.8 | unaffected |
| Linux | Linux | 6.12.50 <= 6.12.* | unaffected |
| Linux | Linux | 6.16.10 <= 6.16.* | unaffected |
| Linux | Linux | 6.17 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/3d429cb1278e995e22995ef117fa96d223a67e93
- https://git.kernel.org/stable/c/6233715b4b714068d6c831d214a4e8792109875a
- https://git.kernel.org/stable/c/e4414b01c1cd9887bbde92f946c1ba94e40d6d64
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