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 support the arena-related insns, inte…
Overview
CVE-2026-93044 is a known-severity vulnerability. It was published on September 17, 2026.
Technical description
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.
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
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Frequently asked questions
What is CVE-2026-93044?
CVE-2026-93044 is a known-severity vulnerability. It was published on September 17, 2026.
How severe is CVE-2026-93044?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-93044?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-93044?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-93044 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.