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CVE Record

CVE-2025-68811: svcrdma: use rc_pageoff for memcpy byte offset

In the Linux kernel, the following vulnerability has been resolved: svcrdma: use rc_pageoff for memcpy byte offset svc_rdma_copy_inline_range added rc_curpage (page index) to the page base instead of the byte offset rc_pageoff. Use rc_pageoff so copies land within the current page. Found by ZeroPath (https://zeropath.com)

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2025-68811 is a Linux kernel svcrdma bug where data could be copied to the wrong location within a page. Public sources show it has been resolved in stable kernel commits, but they do not provide CVSS, CWE, or confirmed impact. Treat exposure as kernel- and feature-dependent.

Executive priority

Prioritize assessment on Linux servers using RDMA-related kernel services. Without public severity or exploitation evidence, this is not clearly an emergency, but kernel memory handling bugs should be remediated during normal high-priority patch cycles.

Technical view

In svc_rdma_copy_inline_range, the code used rc_curpage, a page index, as the memcpy byte offset instead of rc_pageoff. The fix changes the copy offset so inline data lands within the current page. The CVE record lists Linux kernel versions and stable commits but gives no exploitability detail.

Likely exposure

Likely limited to Linux systems running affected kernel versions where the svcrdma server-side RDMA code path is present and reachable. Distribution backport status must be checked with the OS vendor.

Exploitation context

No active exploitation is cited, and the CVE is not marked KEV. Public sources do not describe attacker prerequisites, remote reachability, or practical impact beyond the kernel memory copy offset defect.

Researcher notes

Evidence is incomplete: no CVSS, CWE, exploit status, or impact class is published in the supplied sources. The bug was found by ZeroPath and fixed through Linux stable commits addressing rc_pageoff versus rc_curpage usage.

Mitigation direction

  • Apply Linux kernel updates that include the referenced stable fixes.
  • Check your Linux distribution advisory for backported fixes and affected package versions.
  • If svcrdma is unnecessary, follow vendor guidance on reducing exposure.

Validation and detection

  • Inventory Linux kernel versions across exposed servers.
  • Compare running kernels against vendor advisories for CVE-2025-68811.
  • Verify updated kernels include the referenced stable fix commits.
  • Confirm whether svcrdma-related functionality is enabled or required.
Prepared
Confidence
medium
Sources
5

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2025-68811 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
4Source 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
LinuxLinux8e122582680c6f8acd686a5a2af9c0e46fe90f2d, 8e122582680c6f8acd686a5a2af9c0e46fe90f2d, 8e122582680c6f8acd686a5a2af9c0e46fe90f2dunaffected
LinuxLinux6.8, 0, 6.12.64, 6.18.3, 6.19affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.