---
id: CVE-2026-93104
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/rvt: Return NULL after port allocation failure

  rvt_alloc_device() deallocates the IB device when its port array cannot
  be allocated but then returns the pointer t…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/rvt: Return NULL after port allocation failure

  rvt_alloc_device() deallocates the IB device when its port array cannot
  be allocated but then returns the pointer t…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= ff6acd69518e0a84bd9c9b7f1bd4313f7076db97 <
    b1e1b25723af44328524c7b54433e4bf0ab9930c
  - >-
    Linux >= ff6acd69518e0a84bd9c9b7f1bd4313f7076db97 <
    2982eaf3b9d2d953318c74cd6f1b7576ea6d7b1f
  - Linux 4.6
published: '2026-09-17'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:18:05.270'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93104'
references:
  - url: 'https://git.kernel.org/stable/c/2982eaf3b9d2d953318c74cd6f1b7576ea6d7b1f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/80968b42d13080bf7bc1f3ee17fef126ce2ad98f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b1e1b25723af44328524c7b54433e4bf0ab9930c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93104.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93104'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2536233'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93104'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93104'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93104.mbox
  - url: 'https://kernelcve.org/list/?q=CVE-2026-93104'
  - url: 'https://git.kernel.org/stable/c/b7129930d1ec46c03a0de07fdce6c29f75795006'
  - url: 'https://git.kernel.org/stable/c/5a1a7a5e2fe1a15824fa9ae5edd8f008259471d1'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00174
epssPercentile: 0.06842
ingestedAt: '2026-09-17T16:21:47.755Z'
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-416
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

RDMA/rvt: Return NULL after port allocation failure

rvt_alloc_device() deallocates the IB device when its port array cannot
be allocated but then returns the pointer to the released allocation.
Callers treat any non-NULL value as valid and dereference it, resulting
in a use-after-free.

Return NULL immediately after deallocation so callers can propagate the
allocation failure.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93104.json)