---
title: "CVE-2026-98241: Linux Kernel - Out of Bounds Read"
description: "Linux kernel contains a memory misinterpretation vulnerability in IPv6 xfrm local error paths caused by dereferencing skb->sk as a full socket when it may be a mini-socket, letting attackers cause out-of-bounds read, exploit requires triggering specific IPv6 XFRM tunnel routes with lower MTU."
url: https://panop.io/threat-heartbeat/CVE-2026-98241/
---

# CVE-2026-98241 Linux Kernel - Out of Bounds Read

Linux kernel contains a memory misinterpretation vulnerability in IPv6 xfrm local error paths caused by dereferencing skb->sk as a full socket when it may be a mini-socket, letting attackers cause out-of-bounds read, exploit requires triggering specific IPv6 XFRM tunnel routes with lower MTU.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-98241)

## Details

Type

Out of Bounds Read

Impact

Information Disclosure, 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

6 October 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix.

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-2026-98241](https://nvd.nist.gov/vuln/detail/CVE-2026-98241)
- [https://git.kernel.org/stable/c/ca3d68c3213475b53db6647e159dc73bd1af5ab1](https://git.kernel.org/stable/c/ca3d68c3213475b53db6647e159dc73bd1af5ab1)
- [https://git.kernel.org/stable/c/4c030a0400ebfd2318361c923a88103b2c67c49f](https://git.kernel.org/stable/c/4c030a0400ebfd2318361c923a88103b2c67c49f)
- [https://git.kernel.org/stable/c/60459c670329d586a58db5d8f811fa5accfe4862](https://git.kernel.org/stable/c/60459c670329d586a58db5d8f811fa5accfe4862)
- [https://git.kernel.org/stable/c/675919e08ce266b8cac11fd9af29170e762a480f](https://git.kernel.org/stable/c/675919e08ce266b8cac11fd9af29170e762a480f)
- [https://git.kernel.org/stable/c/6973a21ee73c5567f883813c8ef414774b45892f](https://git.kernel.org/stable/c/6973a21ee73c5567f883813c8ef414774b45892f)
- [https://git.kernel.org/stable/c/904a0e827d0d7189271a3a2eb648293809f25efc](https://git.kernel.org/stable/c/904a0e827d0d7189271a3a2eb648293809f25efc)
- [https://git.kernel.org/stable/c/b1a88633c36d2cbc3831382f3846754d344276fd](https://git.kernel.org/stable/c/b1a88633c36d2cbc3831382f3846754d344276fd)
- [https://git.kernel.org/stable/c/c21f3f7fbfeda7c5794f606cb0ffcc2d9001eef8](https://git.kernel.org/stable/c/c21f3f7fbfeda7c5794f606cb0ffcc2d9001eef8)

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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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