---
title: "CVE-2026-98257: Linux Kernel - Denial of Service"
description: "Linux kernel contains a deadlock vulnerability in rds_ib_cm_connect_complete() caused by improper use of rds_conn_destroy() on protocol version mismatch, letting attackers cause a denial of service by stalling RDS connection workqueues, exploit requires triggering a protocol version mismatch."
url: https://panop.io/threat-heartbeat/CVE-2026-98257/
---

# CVE-2026-98257 Linux Kernel - Denial of Service

Linux kernel contains a deadlock vulnerability in rds\_ib\_cm\_connect\_complete() caused by improper use of rds\_conn\_destroy() on protocol version mismatch, letting attackers cause a denial of service by stalling RDS connection workqueues, exploit requires triggering a protocol version mismatch.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.53% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-98257)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-2026-98257](https://nvd.nist.gov/vuln/detail/CVE-2026-98257)
- [https://git.kernel.org/stable/c/d392b16acd0908f077289aad8bba066ff16de336](https://git.kernel.org/stable/c/d392b16acd0908f077289aad8bba066ff16de336)
- [https://git.kernel.org/stable/c/f97d8c7bab7843631206a114986c9059da03efeb](https://git.kernel.org/stable/c/f97d8c7bab7843631206a114986c9059da03efeb)
- [https://git.kernel.org/stable/c/14fb90067d13f4494cff0f03243fae3cf2911cbc](https://git.kernel.org/stable/c/14fb90067d13f4494cff0f03243fae3cf2911cbc)
- [https://git.kernel.org/stable/c/344c72a0bc2703a6de4918ed935850e07dae3af2](https://git.kernel.org/stable/c/344c72a0bc2703a6de4918ed935850e07dae3af2)
- [https://git.kernel.org/stable/c/424019be3f637da76b74f44a40034669acbb166f](https://git.kernel.org/stable/c/424019be3f637da76b74f44a40034669acbb166f)
- [https://git.kernel.org/stable/c/65ca0a5037152a5a80b8fe6aac80eb80458be573](https://git.kernel.org/stable/c/65ca0a5037152a5a80b8fe6aac80eb80458be573)
- [https://git.kernel.org/stable/c/7d8c22cb2cb1efb5e830a4545c76abf7b35cc2e8](https://git.kernel.org/stable/c/7d8c22cb2cb1efb5e830a4545c76abf7b35cc2e8)
- [https://git.kernel.org/stable/c/b5c9f2951d330d4a198a64d6e60f79b4bd6ef078](https://git.kernel.org/stable/c/b5c9f2951d330d4a198a64d6e60f79b4bd6ef078)

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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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