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CVE Record

CVE-2025-68234: io_uring/cmd_net: fix wrong argument types for skb_queue_splice()

In the Linux kernel, the following vulnerability has been resolved: io_uring/cmd_net: fix wrong argument types for skb_queue_splice() If timestamp retriving needs to be retried and the local list of SKB's already has entries, then it's spliced back into the socket queue. However, the arguments for the splice helper are transposed, causing exactly the wrong direction of splicing into the on-stack list. Fix that up.

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux kernel networking flaw can mishandle queued network packets when an io_uring timestamp operation is retried. The supplied CVSS assessment indicates a local, low-privileged attacker could potentially compromise confidentiality, integrity, and availability. Exact real-world impact and distribution-specific exposure are not established by the provided sources.

Executive priority

Treat as a high-priority kernel update for systems exposed to untrusted local users or workloads. Schedule vendor-supported remediation promptly, while avoiding claims of emergency internet-scale exploitation: the supplied evidence indicates a local attack path and does not establish active exploitation.

Technical view

During retried timestamp retrieval in io_uring cmd networking, existing SKBs must be returned to the socket queue. Transposed arguments to skb_queue_splice() reverse the intended splice direction into an on-stack list. The referenced stable-kernel commits correct the argument order. No CWE is supplied.

Likely exposure

Systems running affected Linux kernels and permitting local low-privileged access are the primary concern. The bundle identifies Linux 6.17, 6.17.10, and 6.18 as affected, but provides ambiguous version-range data. Distribution backports may change exposure, so assess the actual vendor kernel build and included patches.

Exploitation context

The supplied CVSS vector describes local access, low complexity, low privileges, no user interaction, and potentially high confidentiality, integrity, and availability impact. The CVE is not listed as KEV, and the provided sources contain no evidence of active exploitation or a public exploit.

Researcher notes

The vulnerable condition involves a timestamp-retrieval retry when the local SKB list already contains entries. Source metadata does not identify a CWE, affected distributions, reliable vulnerable-version boundaries, exploitability prerequisites beyond the CVSS vector, or observed attacks. Validate ancestry or backport inclusion against the referenced fixes.

Mitigation direction

  • Obtain a distribution-supported kernel incorporating one of the referenced stable fixes.
  • Check vendor advisories for corrected package versions and any supported interim mitigation.
  • Prioritize multi-user systems where untrusted users can execute local workloads.
  • Restrict unnecessary local access while patch availability or applicability is being confirmed.

Validation and detection

  • Inventory running kernel versions and distribution package revisions across Linux systems.
  • Compare vendor patch metadata against the two referenced stable-kernel commits.
  • Confirm the updated kernel is active after remediation, including after reboot.
  • Review vendor advisories for backports that retain older-looking kernel version numbers.
Prepared
Confidence
medium
Sources
4

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-2025-68234 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

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

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2025-68234Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

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.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux9e4ed359b8efad0e8ad4510d8ad22bf0b060526a, 9e4ed359b8efad0e8ad4510d8ad22bf0b060526aunaffected
LinuxLinux6.17, 0, 6.17.10, 6.18affected
Weakness

CWE details

No CWE listed

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