---
title: "CVE-2026-93105: Linux Kernel - Use After Free"
description: "Linux kernel contains a use-after-free vulnerability caused by esp_ssg_unref() incorrectly unreferencing managed frag pages in esp, letting attackers cause page reference underflow and potential memory corruption, exploit requires use of managed frag skb."
url: https://panop.io/threat-heartbeat/CVE-2026-93105/
---

# CVE-2026-93105 Linux Kernel - Use After Free

Linux kernel contains a use-after-free vulnerability caused by esp\_ssg\_unref() incorrectly unreferencing managed frag pages in esp, letting attackers cause page reference underflow and potential memory corruption, exploit requires use of managed frag skb.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-93105)

## Details

Type

Use After Free

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 esp\_ssg\_unref() managed frag page unref issue.

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-2026-93105](https://nvd.nist.gov/vuln/detail/CVE-2026-93105)
- [https://git.kernel.org/stable/c/1ad6456898f6e6cf58be83bdb607acb1119a9cd1](https://git.kernel.org/stable/c/1ad6456898f6e6cf58be83bdb607acb1119a9cd1)
- [https://git.kernel.org/stable/c/21697720ff43b8dfa25b8e8d9ca7f56f4597fc80](https://git.kernel.org/stable/c/21697720ff43b8dfa25b8e8d9ca7f56f4597fc80)
- [https://git.kernel.org/stable/c/26b6b14c7a0368e317a1e9fb5144ebe6f8d495cf](https://git.kernel.org/stable/c/26b6b14c7a0368e317a1e9fb5144ebe6f8d495cf)

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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

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

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