Answer in brief
CVE-2025-39990 records a Unknown severity vulnerability in bpf: Check the helper function is valid in get_helper_proto. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f470378c7562a2818b45ed11c98973f2b89eedd3 <3d429cb1278e995e22995ef117fa96d223a67e93 || >=f470378c7562a2818b45ed11c98973f2b89eedd3 <6233715b4b714068d6c831d214a4e8792109875a || >=f470378c7562a2818b45ed11c98973f2b89eedd3 <e4414b01c1cd9887bbde92f946c1ba94e40d6d64 | 3d429cb1278e995e22995ef117fa96d223a67e93, 6233715b4b714068d6c831d214a4e8792109875a, e4414b01c1cd9887bbde92f946c1ba94e40d6d64 |
| Linux/Linuxgeneric | 5.8 | Not reported |
Published upstream
Oct 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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]
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-39990 records a Unknown severity vulnerability in bpf: Check the helper function is valid in get_helper_proto. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f470378c7562a2818b45ed11c98973f2b89eedd3 <3d429cb1278e995e22995ef117fa96d223a67e93 || >=f470378c7562a2818b45ed11c98973f2b89eedd3 <6233715b4b714068d6c831d214a4e8792109875a || >=f470378c7562a2818b45ed11c98973f2b89eedd3 <e4414b01c1cd9887bbde92f946c1ba94e40d6d64 | 3d429cb1278e995e22995ef117fa96d223a67e93, 6233715b4b714068d6c831d214a4e8792109875a, e4414b01c1cd9887bbde92f946c1ba94e40d6d64 |
| Linux/Linuxgeneric | 5.8 | Not reported |
Published upstream
Oct 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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]
Quoted source text, attributed separately from HOL analysis.