---
title: "CVE-2026-98360: Linux Kernel RDMA/rxe - Use After Free"
description: "Linux kernel RDMA/rxe contains a use-after-free vulnerability caused by premature insertion of multicast groups into mcg_tree before rxe_mcast_add() succeeds, letting local userspace RDMA clients cause memory corruption, exploit requires local user access."
url: https://panop.io/threat-heartbeat/CVE-2026-98360/
---

# CVE-2026-98360 Linux Kernel RDMA/rxe - Use After Free

Linux kernel RDMA/rxe contains a use-after-free vulnerability caused by premature insertion of multicast groups into mcg\_tree before rxe\_mcast\_add() succeeds, letting local userspace RDMA clients cause memory corruption, exploit requires local user access.

CVSS base score 7.0 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.13% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-98360)

## Details

Type

Use After Free

Impact

Denial Of Service, Privilege Escalation

CVSS vector

CVSS:3.1/AV:L/AC:H/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 this 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-2026-98360](https://nvd.nist.gov/vuln/detail/CVE-2026-98360)
- [https://git.kernel.org/stable/c/02c0a2fa69c16248a7432af8a6d64ab2a73a5283](https://git.kernel.org/stable/c/02c0a2fa69c16248a7432af8a6d64ab2a73a5283)
- [https://git.kernel.org/stable/c/1caceeb2d74bbe88223aea55eb8626b4c5f076fd](https://git.kernel.org/stable/c/1caceeb2d74bbe88223aea55eb8626b4c5f076fd)
- [https://git.kernel.org/stable/c/c79a789aa15180a1543b5db49c343d12e3ec214d](https://git.kernel.org/stable/c/c79a789aa15180a1543b5db49c343d12e3ec214d)
- [https://git.kernel.org/stable/c/d4fc4e37f8a143b0fe83b42c8fb48cf542154fee](https://git.kernel.org/stable/c/d4fc4e37f8a143b0fe83b42c8fb48cf542154fee)
- [https://git.kernel.org/stable/c/ddb43ac0926d4a931bc9b7744b93627f627457e5](https://git.kernel.org/stable/c/ddb43ac0926d4a931bc9b7744b93627f627457e5)
- [https://git.kernel.org/stable/c/faae1fb4ccf8205806a8802c008798dabeb0205b](https://git.kernel.org/stable/c/faae1fb4ccf8205806a8802c008798dabeb0205b)

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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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