# CVE-2026-93044: linux: In the Linux kernel, the following vulnerability has been resolved:  bpf: Disallow interpreter fallback for arena-rel...

CVE-2026-93044 is fixed in linux on 1 platform by DEBIAN-CVE-2026-93044 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-93044
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 17, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.2.6-1 | [DEBIAN-CVE-2026-93044](https://patchblox.com/security/data/fix/linux/debian-cve-2026-93044.md) | Sep 23, 2026 |

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Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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