---
title: "CVE-2026-93250: Linux Kernel - Use After Free"
description: "Linux kernel contains a use-after-free vulnerability in vxlan_mdb_flush() caused by improper handling of MDB entries during flush, letting attackers cause memory corruption, exploit requires network device deletion or RTM_DELMDB with NLM_F_BULK."
url: https://panop.io/threat-heartbeat/CVE-2026-93250/
---

# CVE-2026-93250 Linux Kernel - Use After Free

Linux kernel contains a use-after-free vulnerability in vxlan\_mdb\_flush() caused by improper handling of MDB entries during flush, letting attackers cause memory corruption, exploit requires network device deletion or RTM\_DELMDB with NLM\_F\_BULK.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.16% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-93250)

## Details

Type

Use After Free

Impact

Denial Of Service, Remote Code Execution

CVSS vector

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

Published

24 September 2026

Updated

15 October 2026

## Vendor fix

Update to Linux kernel version 7.2.0-rc7 or later.

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-2026-93250](https://nvd.nist.gov/vuln/detail/CVE-2026-93250)
- [https://git.kernel.org/stable/c/3e6b705bc162fc7257645725a7d2cf6c71250318](https://git.kernel.org/stable/c/3e6b705bc162fc7257645725a7d2cf6c71250318)
- [https://git.kernel.org/stable/c/bc2dc66a6693a78f8c1e6ca2dbebd50f16e2c366](https://git.kernel.org/stable/c/bc2dc66a6693a78f8c1e6ca2dbebd50f16e2c366)
- [https://git.kernel.org/stable/c/c7dc26d06f90ca11bbd6114f6a62a67d038816c7](https://git.kernel.org/stable/c/c7dc26d06f90ca11bbd6114f6a62a67d038816c7)
- [https://git.kernel.org/stable/c/f26400b325bdc2868e40612c4804c82cf8ba6275](https://git.kernel.org/stable/c/f26400b325bdc2868e40612c4804c82cf8ba6275)
- [https://git.kernel.org/stable/c/f8a9b988e7a7bc674e74e8c901794d792c35689e](https://git.kernel.org/stable/c/f8a9b988e7a7bc674e74e8c901794d792c35689e)

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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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