When did CVE-2025-38280 actually become a problem?

[Rolf Eike Beer <eb@emlix.com>]

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Hi all,

I sent basically the same question to cve@kernel.org but they are out of 
ideas. They assign the affected version numbers based on the "Fixes" 
information initially. But I'm unsure if that one is actually correct here, 
see below.

The fix is this commit:

> commit 86bc9c742426a16b52a10ef61f5b721aecca2344
> Author: KaFai Wan <mannkafai@gmail.com>
> Date:   Mon May 26 21:33:58 2025 +0800
>
>     bpf: Avoid __bpf_prog_ret0_warn when jit fails
> 
[…]
> Fixes: fa9dd599b4da ("bpf: get rid of pure_initcall dependency to enable 
jits")

And my questions were those:

=========
I was staring a while on CVE-2025-38280, especially since the message states:

> When creating bpf program, 'fp->jit_requested' depends on bpf_jit_enable.
> This issue is triggered because of CONFIG_BPF_JIT_ALWAYS_ON is not set …

But the commit that this was attributed to 
(5124abda3060e2eab506fb14a27acadee3c3e396) added the warning to the code, but 
the function is only reachable when CONFIG_BPF_JIT_ALWAYS_ON is set. This was 
the case until 6ebc5030e0c5a698f1dd9a6684cddf6ccaed64a0 moved it out of the 
define. So is this even an issue before 6.15 after all? Since the fix got 
backported I think it's more an issue to where the second commit got 
backported? So in my eyes the 5.10 kernel I'm currently staring at isn't 
affected at all.
==========

Can anyone comment on this? If there is a conclusion I can relay that to the 
CVE folks to update the version ranges afterwards.

Regards,

Eike
-- 
Rolf Eike Beer

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