---
title: "CVE-2026-93138: Linux Kernel - Race Condition"
description: "Linux kernel contains a race condition in bpf_get_btf_vmlinux caused by improper memory ordering in BTF parsing, letting concurrent callers observe uninitialized data, exploit requires concurrent access to BPF verifier."
url: https://panop.io/threat-heartbeat/CVE-2026-93138/
---

# CVE-2026-93138 Linux Kernel - Race Condition

Linux kernel contains a race condition in bpf\_get\_btf\_vmlinux caused by improper memory ordering in BTF parsing, letting concurrent callers observe uninitialized data, exploit requires concurrent access to BPF verifier.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.18% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-93138)

## Details

Type

Race Condition

Impact

Denial Of Service

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

## Vendor fix

Update to the latest Linux kernel version containing the fix for bpf\_get\_btf\_vmlinux race condition.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-93138](https://nvd.nist.gov/vuln/detail/CVE-2026-93138)
- [https://git.kernel.org/stable/c/978524ecfc1c539282df5858de1eec20748c6f74](https://git.kernel.org/stable/c/978524ecfc1c539282df5858de1eec20748c6f74)
- [https://git.kernel.org/stable/c/a7fe72d780122eb934536f1719abad445f6afdf7](https://git.kernel.org/stable/c/a7fe72d780122eb934536f1719abad445f6afdf7)
- [https://git.kernel.org/stable/c/e18a10b39c994f04e1ebd7f8fc042bb1ca8ad053](https://git.kernel.org/stable/c/e18a10b39c994f04e1ebd7f8fc042bb1ca8ad053)
- [https://git.kernel.org/stable/c/eaf302628a78806f66d8224d6ba03fb4d5025de4](https://git.kernel.org/stable/c/eaf302628a78806f66d8224d6ba03fb4d5025de4)
- [https://git.kernel.org/stable/c/f32a4a40bc635be25d6816da4bd91e9e58c31bf3](https://git.kernel.org/stable/c/f32a4a40bc635be25d6816da4bd91e9e58c31bf3)
- [https://git.kernel.org/stable/c/2892f3f44bf865c8fb6b6c0960edec4cc91806ee](https://git.kernel.org/stable/c/2892f3f44bf865c8fb6b6c0960edec4cc91806ee)
- [https://git.kernel.org/stable/c/86d11c594d60b255b526fa5260f669463fb1a063](https://git.kernel.org/stable/c/86d11c594d60b255b526fa5260f669463fb1a063)
- [https://git.kernel.org/stable/c/92863e678070f57c17c868e4bfa2441a5c61ad2b](https://git.kernel.org/stable/c/92863e678070f57c17c868e4bfa2441a5c61ad2b)

[← All CVEs](https://panop.io/threat-heartbeat/)

## 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

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)