CVE-2025-68811Network attack vector

Remote memory corruption via incorrect RDMA page offset

Published Jan 13, 2026 · Updated Jan 13, 2026

Memory corruption in Linux Kernel 6.8 allows remote attackers to overwrite RPC receive data through crafted inline RDMA requests. The svc_rdma_copy_inline_range function adds rc_curpage, a page index, to the destination page base instead of using the rc_pageoff byte offset, so memcpy writes at the wrong position within the current page. Exploitation requires an affected kernel with server-side RPC-over-RDMA enabled; the misplaced copy corrupts in-memory request data and can compromise kernel operation.

CVSS severity9.8
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Linux Kernel 6.8 allows remote attackers to overwrite RPC receive data through crafted inline RDMA requests. The svc_rdma_copy_inline_range function adds rc_curpage, a page index, to the destination page base instead of using the rc_pageoff byte offset, so memcpy writes at the wrong position within the current page. Exploitation requires an affected kernel with server-side RPC-over-RDMA enabled; the misplaced copy corrupts in-memory request data and can compromise kernel operation.

The record

CVE
CVE-2025-68811
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

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Is a vulnerable build present?

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

  1. Affected versionversion=6.8
  2. Affected versionversion=8e122582680c6f8acd686a5a2af9c0e46fe90f2d <2a77c8dd49bccf0ca232be7c836cec1209abb8da
  3. Affected versionversion=8e122582680c6f8acd686a5a2af9c0e46fe90f2d <a8ee9099f30654917aa68f55d707b5627e1dbf77
  4. Affected versionversion=8e122582680c6f8acd686a5a2af9c0e46fe90f2d <e8623e9c451e23d84b870811f42fd872b4089ef6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.8; version=8e122582680c6f8acd686a5a2af9c0e46fe90f2d <2a77c8dd49bccf0ca232be7c836cec1209abb8da; version=8e122582680c6f8acd686a5a2af9c0e46fe90f2d <a8ee9099f30654917aa68f55d707b5627e1dbf77; version=8e122582680c6f8acd686a5a2af9c0e46fe90f2d <e8623e9c451e23d84b870811f42fd872b4089ef6

Published CVSS scores

7.1Oracle LinuxCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H
9.8kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/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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