---
title: "CVE-2026-98369: Linux Kernel - Race Condition"
description: "Linux kernel contains an RCU usage issue in xfrm_trans_reinject caused by missing rcu_read_lock(), skb_dst_force(), and dev_hold() calls, letting attackers cause race conditions or memory corruption, exploit requires triggering specific packet reinjection via workqueue."
url: https://panop.io/threat-heartbeat/CVE-2026-98369/
---

# CVE-2026-98369 Linux Kernel - Race Condition

Linux kernel contains an RCU usage issue in xfrm\_trans\_reinject caused by missing rcu\_read\_lock(), skb\_dst\_force(), and dev\_hold() calls, letting attackers cause race conditions or memory corruption, exploit requires triggering specific packet reinjection via workqueue.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.15% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-98369)

## 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

6 October 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for commit 4f4920669d21 and related patches.

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-2026-98369](https://nvd.nist.gov/vuln/detail/CVE-2026-98369)
- [https://git.kernel.org/stable/c/68a317b4aec8ca1868a39d69e40f9e29baa4f40a](https://git.kernel.org/stable/c/68a317b4aec8ca1868a39d69e40f9e29baa4f40a)
- [https://git.kernel.org/stable/c/6eb3b071be8e260543c604550c54dac66e6b174b](https://git.kernel.org/stable/c/6eb3b071be8e260543c604550c54dac66e6b174b)
- [https://git.kernel.org/stable/c/d2f5082f9e84653fa1a9e8aebaaff23e688f5e19](https://git.kernel.org/stable/c/d2f5082f9e84653fa1a9e8aebaaff23e688f5e19)
- [https://git.kernel.org/stable/c/0cda8273265d30cac6423834fd7d4acb75f04fdb](https://git.kernel.org/stable/c/0cda8273265d30cac6423834fd7d4acb75f04fdb)
- [https://git.kernel.org/stable/c/41e47f1664be86c91326f0afe0504a1162d00907](https://git.kernel.org/stable/c/41e47f1664be86c91326f0afe0504a1162d00907)
- [https://git.kernel.org/stable/c/6601d91a85761f33351c71e04ec0bbd294ca07ce](https://git.kernel.org/stable/c/6601d91a85761f33351c71e04ec0bbd294ca07ce)
- [https://git.kernel.org/stable/c/664fc0941df7c1918b2cd4de6ee00469ba77d8e4](https://git.kernel.org/stable/c/664fc0941df7c1918b2cd4de6ee00469ba77d8e4)

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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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