CVE-2026-74631: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-75cj-q634-phhq
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CVSS 8.4
Published
Advisory Summary

CVE-2026-74631 is a HIGH (CVSS 8.4) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74631 at a Glance

CVE Identifier CVE-2026-74631
GHSA Identifier GHSA-75cj-q634-phhq
Severity HIGH
CVSS v3.1 Base Score 8.4
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-74631

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-74631, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: net: smc: fix splice entry lifetime imbalance in smc_rx_splice smc_rx_splice() passes pages to splice_to_pipe() before taking the references that cover the lifetime of each splice entry. In the VM-backed RMB path, splice_to_pipe() may drop unqueued entries through smc_rx_spd_release(), while queued entries are released later via the pipe buffer callback. The old post-splice accounting also derives the number of queued VM pages from an offset mutated while building the descriptor, and a multi-page splice pairs one sock_hold() with multiple sock_put() calls. Take the page and socket references for every candidate entry before splice_to_pipe(), and drop the matching private state, page reference, and socket reference from smc_rx_spd_release() for entries that never get queued. This fixes a refcount imbalance that can underflow page refcounts and trigger a use-after-free.

References

NVD — CVE-2026-74631 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74631
git.kernel.org/stable/c/07ad246529... WEB
https://git.kernel.org/stable/c/07ad246529d136d5ef441d5ab4c305d132ff3090
git.kernel.org/stable/c/0b7d54cede... WEB
https://git.kernel.org/stable/c/0b7d54cedea5cb158e21925ae0c6c2f5c87ed2a0
git.kernel.org/stable/c/4515c78f4d... WEB
https://git.kernel.org/stable/c/4515c78f4d9fd577270f012efeb062ea58b3682d
git.kernel.org/stable/c/5d9686af29... WEB
https://git.kernel.org/stable/c/5d9686af2976741bbd79b150d1c9e60b81e7f12e
git.kernel.org/stable/c/7ddc7af2ae... WEB
https://git.kernel.org/stable/c/7ddc7af2ae7fc5a0c0635b245c0824c8b76de5cb
git.kernel.org/stable/c/af02c67ce6... WEB
https://git.kernel.org/stable/c/af02c67ce654356c58db20a0bb2db33ace3b07a8
git.kernel.org/stable/c/c841789e45... WEB
https://git.kernel.org/stable/c/c841789e456ec6751342fa800639ce8e82ff0e6b
git.kernel.org/stable/c/ca8342b5fc... WEB
https://git.kernel.org/stable/c/ca8342b5fc24c249fdb998468f6a168b457c67e5

Frequently Asked Questions

What is CVE-2026-74631?
CVE-2026-74631 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-74631?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74631?
CVE-2026-74631 has a CVSS v3.1 base score of 8.4 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74631?
CVE-2026-74631 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74631?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-75cj-q634-phhq",
  "modified" : "2026-08-25T06:31:24Z",
  "published" : "2026-08-22T18:30:27Z",
  "aliases" : [ "CVE-2026-74631" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: smc: fix splice entry lifetime imbalance in smc_rx_splice\n\nsmc_rx_splice() passes pages to splice_to_pipe() before taking the\nreferences that cover the lifetime of each splice entry. In the\nVM-backed RMB path, splice_to_pipe() may drop unqueued entries through\nsmc_rx_spd_release(), while queued entries are released later via the\npipe buffer callback.\n\nThe old post-splice accounting also derives the number of queued VM pages\nfrom an offset mutated while building the descriptor, and a multi-page\nsplice pairs one sock_hold() with multiple sock_put() calls.\n\nTake the page and socket references for every candidate entry before\nsplice_to_pipe(), and drop the matching private state, page reference,\nand socket reference from smc_rx_spd_release() for entries that never\nget queued. This fixes a refcount imbalance that can underflow page\nrefcounts and trigger a use-after-free.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74631"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/07ad246529d136d5ef441d5ab4c305d132ff3090"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0b7d54cedea5cb158e21925ae0c6c2f5c87ed2a0"
  }, {
    "type" : "WEB",
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  }, {
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  }, {
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    "url" : "https://git.kernel.org/stable/c/af02c67ce654356c58db20a0bb2db33ace3b07a8"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c841789e456ec6751342fa800639ce8e82ff0e6b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ca8342b5fc24c249fdb998468f6a168b457c67e5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-22T16:16:36Z"
  }
}