UNKNOWN NVD
CVE-2026-93044
In the Linux kernel, the following vulnerability has been resolved: bpf: Disallow interpreter fallback for arena-related insns Since the interpreter does not
In the Linux kernel, the following vulnerability has been resolved:
bpf: Disallow interpreter fallback for arena-related insns
Since the interpreter does not support the arena-related insns,
interpreter fallback should not be allowed for these insns in
core.c::__bpf_prog_select_runtime().
Currently, when the interpreter executes the arena ST/LDX/STX insns,
it would hit the BUG_ON() in ___bpf_prog_run() at run time.
[ 2.579196] BPF interpreter: unknown opcode a2 (imm: 0x0)
[ 2.579998] ------------[ cut here ]------------
[ 2.580652] kernel BUG at kernel/bpf/core.c:2349!
[ 2.581314] Oops: invalid opcode: 0000 [#1] SMP PTI
Set jit_required as true when arena map is used in the prog to disallow
interpreter fallback for arena-related insns.
References
- https://git.kernel.org/stable/c/34746b5a84ec37c0ea2bf6808c65c5ed8790eb51
- https://git.kernel.org/stable/c/408b6d3bc19c4aa852ab7ee2f447756e52e69967
This unknown severity vulnerability was published on 2026-09-17 via NVD.
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