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CVE Record

CVE-2025-71133: 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>

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue is an invalid memory read in the RDMA irdma network event handler. The source says the bug is mostly harmless and mainly triggers KASAN reports on debug kernels. There is no CVSS score, CWE, or KEV evidence of active exploitation in the provided sources.

Executive priority

Treat this as a low-urgency kernel maintenance item unless your environment relies on RDMA/irdma or debug kernels. No active exploitation is evidenced, but affected systems should receive normal vendor kernel updates.

Technical view

irdma_net_event dereferenced ptr as struct neighbour before confirming the event was NETEVENT_NEIGH_UPDATE. Other netevent types can pass different, smaller structures, causing a stack out-of-bounds read. The fix moves neigh->dev access under the NETEVENT_NEIGH_UPDATE case.

Likely exposure

Exposure is most relevant to Linux systems running affected kernel versions where RDMA/irdma code is present or loaded. The source lists affected Linux kernel lines from 5.14 through versions before fixed stable releases, but package-level distribution impact is not provided.

Exploitation context

The provided record does not claim active exploitation, public exploit availability, privilege requirements, or remote attackability. KEV is false. The included trace shows a KASAN detection path involving IPv6 network events on a debug kernel.

Researcher notes

The vulnerability is a type confusion-style invalid read caused by early dereference of a netevent pointer before event-type validation. Impact evidence is limited to KASAN stack out-of-bounds reporting; confidentiality, integrity, and availability effects are not established in the bundle.

Mitigation direction

  • Check Linux vendor or distribution advisories for fixed kernel packages.
  • Update to a kernel containing the referenced stable commits when available.
  • Prioritize debug, test, and RDMA-enabled Linux systems for review.
  • Avoid assuming exploitability without vendor or kernel maintainer guidance.

Validation and detection

  • Inventory Linux kernel versions against the affected ranges in the CVE record.
  • Check whether the irdma module or related RDMA functionality is present or loaded.
  • Review kernel logs for KASAN or irdma_net_event stack out-of-bounds reports.
  • Confirm deployed kernels include one of the referenced stable fixes.
Prepared
Confidence
high
Sources
8

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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CVE-2025-71133 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
1ADP providers
7Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux915cc7ac0f8e2a23675ee896e87f17c7d3c47089, 915cc7ac0f8e2a23675ee896e87f17c7d3c47089, 915cc7ac0f8e2a23675ee896e87f17c7d3c47089, 915cc7ac0f8e2a23675ee896e87f17c7d3c47089, 915cc7ac0f8e2a23675ee896e87f17c7d3c47089, 915cc7ac0f8e2a23675ee896e87f17c7d3c47089unaffected
LinuxLinux5.14, 0, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.4, 6.19affected
Weakness

CWE details

No CWE listed

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