CVE-2026-74630: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-6g8v-5hwp-cmr2
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CVSS 7.8
Published
Advisory Summary

CVE-2026-74630 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74630 at a Glance

CVE Identifier CVE-2026-74630
GHSA Identifier GHSA-6g8v-5hwp-cmr2
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2026-74630

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-2026-74630, 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: ipv6: prevent in6_dev_get() from resurrecting inet6_dev in6_dev_get() reads dev->ip6_ptr under RCU and then unconditionally increments its refcount. Device teardown can clear the pointer and drop the last reference between these operations. The increment then resurrects an object whose RCU free has already been queued, so callers can use it after it is freed. Use refcount_inc_not_zero() and return NULL when the object has already reached zero. RCU keeps the memory accessible through the attempted reference acquisition, and a successful increment pins the object for the caller. An independent run on the exact unpatched 6f5156d7a31a (v7.2-rc3) kernel reproduced the invalid reference acquisition as UID 1000: refcount_t: addition on 0; use-after-free. ip6_mc_source+0xef4/0x17e0 It was followed by the corresponding reference underflow in ip6_mc_source(). The supplied trace from the same unpatched revision additionally shows the access after the RCU read-side section ends: BUG: KASAN: slab-use-after-free in mutex_lock+0x76/0xe0 Write of size 8 at addr ffff888015b50240 by task poc/1219 Bug found and triaged by OpenAI Security Research and validated by Trail of Bits.

References

NVD — CVE-2026-74630 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74630
git.kernel.org/stable/c/0e243671bc... WEB
https://git.kernel.org/stable/c/0e243671bc7b8eaf00f83dd2f4367436dc0cff98
git.kernel.org/stable/c/145812b678... WEB
https://git.kernel.org/stable/c/145812b678de9f3b59780173be3c0d22ed60dd93
git.kernel.org/stable/c/14e812ab41... WEB
https://git.kernel.org/stable/c/14e812ab41df0cac033479da835ec9a5de633404
git.kernel.org/stable/c/1c206d461c... WEB
https://git.kernel.org/stable/c/1c206d461c680c3151daa3c89fc26eaf5bf98a7f
git.kernel.org/stable/c/680fbd7942... WEB
https://git.kernel.org/stable/c/680fbd7942185448eadb990a3d10a53eb946b702
git.kernel.org/stable/c/785d908f8d... WEB
https://git.kernel.org/stable/c/785d908f8d21c8bc78b6fb2c2932ab662bf6918a
git.kernel.org/stable/c/aedcfefdb5... WEB
https://git.kernel.org/stable/c/aedcfefdb5b7ed7f8a6196a3e68a25bdbe51d2f8
git.kernel.org/stable/c/cc5bd568f9... WEB
https://git.kernel.org/stable/c/cc5bd568f9b7683e60841b6fd02c10d64535bd6e

Frequently Asked Questions

What is CVE-2026-74630?
CVE-2026-74630 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-2026-74630?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74630?
CVE-2026-74630 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74630?
CVE-2026-74630 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74630?
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-6g8v-5hwp-cmr2",
  "modified" : "2026-08-25T06:31:24Z",
  "published" : "2026-08-22T18:30:27Z",
  "aliases" : [ "CVE-2026-74630" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: prevent in6_dev_get() from resurrecting inet6_dev\n\nin6_dev_get() reads dev->ip6_ptr under RCU and then unconditionally\nincrements its refcount. Device teardown can clear the pointer and drop\nthe last reference between these operations. The increment then\nresurrects an object whose RCU free has already been queued, so callers\ncan use it after it is freed.\n\nUse refcount_inc_not_zero() and return NULL when the object has already\nreached zero. RCU keeps the memory accessible through the attempted\nreference acquisition, and a successful increment pins the object for\nthe caller.\n\nAn independent run on the exact unpatched 6f5156d7a31a (v7.2-rc3)\nkernel reproduced the invalid reference acquisition as UID 1000:\n\n  refcount_t: addition on 0; use-after-free.\n  ip6_mc_source+0xef4/0x17e0\n\nIt was followed by the corresponding reference underflow in\nip6_mc_source(). The supplied trace from the same unpatched revision\nadditionally shows the access after the RCU read-side section ends:\n\n  BUG: KASAN: slab-use-after-free in mutex_lock+0x76/0xe0\n  Write of size 8 at addr ffff888015b50240 by task poc/1219\n\nBug found and triaged by OpenAI Security Research and\nvalidated by Trail of Bits.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74630"
  }, {
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    "url" : "https://git.kernel.org/stable/c/0e243671bc7b8eaf00f83dd2f4367436dc0cff98"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/145812b678de9f3b59780173be3c0d22ed60dd93"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/14e812ab41df0cac033479da835ec9a5de633404"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1c206d461c680c3151daa3c89fc26eaf5bf98a7f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/680fbd7942185448eadb990a3d10a53eb946b702"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/785d908f8d21c8bc78b6fb2c2932ab662bf6918a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/aedcfefdb5b7ed7f8a6196a3e68a25bdbe51d2f8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cc5bd568f9b7683e60841b6fd02c10d64535bd6e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-22T16:16:35Z"
  }
}