Linux Kernel Irdma Net Event Invalid Read Leading to KASAN
CVE-2025-71133 Published on January 14, 2026
RDMA/irdma: avoid invalid read in irdma_net_event
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>
Products Associated with CVE-2025-71133
stack.watch emails you whenever new vulnerabilities are published in Linux Kernel or Canonical Ubuntu Linux. Just hit a watch button to start following.
Affected Versions
Linux:- Version 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 and below db93ae6fa66f1c61ae63400191195e3ee58021da is affected.
- Version 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 and below 305c02e541befe4a44ffde30ed374970f41aeb6c is affected.
- Version 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 and below fc23d05f0b3fb4d80657e7afebae2cae686b31c8 is affected.
- Version 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 and below bf197c7c79ef6458d1ee84dd7db251b51784885f is affected.
- Version 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 and below d9b9affd103f51b42322da4ed5ac025b560bc354 is affected.
- Version 915cc7ac0f8e2a23675ee896e87f17c7d3c47089 and below 6f05611728e9d0ab024832a4f1abb74a5f5d0bb0 is affected.
- Version 5.14 is affected.
- Before 5.14 is unaffected.
- Version 5.15.198, <= 5.15.* is unaffected.
- Version 6.1.160, <= 6.1.* is unaffected.
- Version 6.6.120, <= 6.6.* is unaffected.
- Version 6.12.64, <= 6.12.* is unaffected.
- Version 6.18.4, <= 6.18.* is unaffected.
- Version 6.19, <= * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.