---
title: "CVE-2026-93127: Linux Kernel - Out-of-Bounds Access"
description: "Linux kernel contains a vulnerability in BPF sign-extending narrowing stack fills caused by improper handling of scalar id during sign extension, letting attackers cause out-of-bounds access, exploit requires crafted BPF programs."
url: https://panop.io/threat-heartbeat/CVE-2026-93127/
---

# CVE-2026-93127 Linux Kernel - Out-of-Bounds Access

Linux kernel contains a vulnerability in BPF sign-extending narrowing stack fills caused by improper handling of scalar id during sign extension, letting attackers cause out-of-bounds access, exploit requires crafted BPF programs.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-93127)

## Details

Type

Out-of-Bounds Access

Impact

Denial Of Service, Privilege Escalation

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

17 September 2026

Updated

15 October 2026

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-93127](https://nvd.nist.gov/vuln/detail/CVE-2026-93127)
- [https://git.kernel.org/stable/c/2cb5f4ca695ebe552647e5ba4aad6934d6a43bae](https://git.kernel.org/stable/c/2cb5f4ca695ebe552647e5ba4aad6934d6a43bae)
- [https://git.kernel.org/stable/c/f3614622dc41f3dd99bb4f691da253814e4e6cae](https://git.kernel.org/stable/c/f3614622dc41f3dd99bb4f691da253814e4e6cae)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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