CVE-2025-71068Network attack vector

Kernel compromise via unchecked svcrdma page index

Published Jan 13, 2026 · Updated Jan 13, 2026

Out-of-bounds access in the Linux Kernel allows remote attackers to compromise the kernel via crafted RPC-over-RDMA inline data. The svc_rdma_copy_inline_range function indexes rqstp->rq_pages with rc_curpage before confirming that the index remains within the allocated page-pointer array, including after page advancement. An unauthenticated peer that can reach an enabled RPC-over-RDMA service can force use of an out-of-array page pointer, affecting kernel data and service availability.

CVSS severity9.8
Critical
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the Linux Kernel allows remote attackers to compromise the kernel via crafted RPC-over-RDMA inline data. The svc_rdma_copy_inline_range function indexes rqstp->rq_pages with rc_curpage before confirming that the index remains within the allocated page-pointer array, including after page advancement. An unauthenticated peer that can reach an enabled RPC-over-RDMA service can force use of an out-of-array page pointer, affecting kernel data and service availability.

The record

CVE
CVE-2025-71068
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.11
  2. Affected versionversion=d7cc73972661be4a02a1b09f1d9b3283c6c05154 <5f140b525180c628db8fa6c897f138194a2de417
  3. Affected versionversion=d7cc73972661be4a02a1b09f1d9b3283c6c05154 <7ba826aae1d43212f3baa53a2175ad949e21926e
  4. Affected versionversion=d7cc73972661be4a02a1b09f1d9b3283c6c05154 <d1bea0ce35b6095544ee82bb54156fc62c067e58
  5. Affected versionversion=d7cc73972661be4a02a1b09f1d9b3283c6c05154 <da1ccfc4c452541584a4eae89e337cfa21be6d5a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.11; version=d7cc73972661be4a02a1b09f1d9b3283c6c05154 <5f140b525180c628db8fa6c897f138194a2de417; version=d7cc73972661be4a02a1b09f1d9b3283c6c05154 <7ba826aae1d43212f3baa53a2175ad949e21926e; version=d7cc73972661be4a02a1b09f1d9b3283c6c05154 <d1bea0ce35b6095544ee82bb54156fc62c067e58; version=d7cc73972661be4a02a1b09f1d9b3283c6c05154 <da1ccfc4c452541584a4eae89e337cfa21be6d5a

Published CVSS scores

9.8kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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