---
id: CVE-2025-71133
title: 'RDMA/irdma: avoid invalid read in irdma_net_event'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/irdma: avoid invalid read in irdma_net_event

  irdma_net_event() should not dereference anything from "neigh" (alias
  "ptr") until it has checked that the event is N…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 <
    db93ae6fa66f1c61ae63400191195e3ee58021da
  - >-
    Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 <
    305c02e541befe4a44ffde30ed374970f41aeb6c
  - >-
    Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 <
    fc23d05f0b3fb4d80657e7afebae2cae686b31c8
  - >-
    Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 <
    bf197c7c79ef6458d1ee84dd7db251b51784885f
  - >-
    Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 <
    d9b9affd103f51b42322da4ed5ac025b560bc354
  - >-
    Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 <
    6f05611728e9d0ab024832a4f1abb74a5f5d0bb0
  - Linux 5.14
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T20:40:56.336188Z'
published: '2026-01-14'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T18:15:15.941Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-71133'
references:
  - url: 'https://git.kernel.org/stable/c/db93ae6fa66f1c61ae63400191195e3ee58021da'
  - url: 'https://git.kernel.org/stable/c/305c02e541befe4a44ffde30ed374970f41aeb6c'
  - url: 'https://git.kernel.org/stable/c/fc23d05f0b3fb4d80657e7afebae2cae686b31c8'
  - url: 'https://git.kernel.org/stable/c/bf197c7c79ef6458d1ee84dd7db251b51784885f'
  - url: 'https://git.kernel.org/stable/c/d9b9affd103f51b42322da4ed5ac025b560bc354'
  - url: 'https://git.kernel.org/stable/c/6f05611728e9d0ab024832a4f1abb74a5f5d0bb0'
tags:
  - cve.org
epss: 0.00183
epssPercentile: 0.07425
ingestedAt: '2026-10-19T18:35:50.130Z'
---

## Overview

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

RDMA/irdma: avoid invalid read in irdma_net_event

irdma_net_event() should not dereference anything from "neigh" (alias
"ptr") until it has checked that the event is NETEVENT_NEIGH_UPDATE.
Other events come with different structures pointed to by "ptr" and they
may be smaller than struct neighbour.

Move the read of neigh->dev under the NETEVENT_NEIGH_UPDATE case.

The bug is mostly harmless, but it triggers KASAN on debug kernels:

 BUG: KASAN: stack-out-of-bounds in irdma_net_event+0x32e/0x3b0 [irdma]
 Read of size 8 at addr ffffc900075e07f0 by task kworker/27:2/542554

 CPU: 27 PID: 542554 Comm: kworker/27:2 Kdump: loaded Not tainted 5.14.0-630.el9.x86_64+debug #1
 Hardware name: [...]
 Workqueue: events rt6_probe_deferred
 Call Trace:
  <IRQ>
  dump_stack_lvl+0x60/0xb0
  print_address_description.constprop.0+0x2c/0x3f0
  print_report+0xb4/0x270
  kasan_report+0x92/0xc0
  irdma_net_event+0x32e/0x3b0 [irdma]
  notifier_call_chain+0x9e/0x180
  atomic_notifier_call_chain+0x5c/0x110
  rt6_do_redirect+0xb91/0x1080
  tcp_v6_err+0xe9b/0x13e0
  icmpv6_notify+0x2b2/0x630
  ndisc_redirect_rcv+0x328/0x530
  icmpv6_rcv+0xc16/0x1360
  ip6_protocol_deliver_rcu+0xb84/0x12e0
  ip6_input_finish+0x117/0x240
  ip6_input+0xc4/0x370
  ipv6_rcv+0x420/0x7d0
  __netif_receive_skb_one_core+0x118/0x1b0
  process_backlog+0xd1/0x5d0
  __napi_poll.constprop.0+0xa3/0x440
  net_rx_action+0x78a/0xba0
  handle_softirqs+0x2d4/0x9c0
  do_softirq+0xad/0xe0
  </IRQ>

## Affected

- `Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 < db93ae6fa66f1c61ae63400191195e3ee58021da`
- `Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 < 305c02e541befe4a44ffde30ed374970f41aeb6c`
- `Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 < fc23d05f0b3fb4d80657e7afebae2cae686b31c8`
- `Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 < bf197c7c79ef6458d1ee84dd7db251b51784885f`
- `Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 < d9b9affd103f51b42322da4ed5ac025b560bc354`
- `Linux >= 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 < 6f05611728e9d0ab024832a4f1abb74a5f5d0bb0`
- `Linux 5.14`

## Remediation

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