CVE-2026-93227: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-x6mv-65qg-c346
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Advisory Summary

CVE-2026-93227 is a security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-93227 at a Glance

CVE Identifier CVE-2026-93227
GHSA Identifier GHSA-x6mv-65qg-c346
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-93227

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-2026-93227, 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: mm/mm_init: deferred_grow_zone(): fix out-of-range first_deferred_pfn With CONFIG_DEFERRED_STRUCT_PAGE_INIT enabled, deferred_grow_zone() initializes struct pages early in boot to satisfy an allocation. With a large CMA reservation in place, the ranges deferred_init_memmap() finds may not add up to the allocation it was asked for, and the function ends up initializing the memory map of the entire zone and still falls short. That is fine in itself: the function accounts for it and leaves the caller to decide whether it now has enough memory. However, the update of pgdat->first_deferred_pfn that tracks where uninitialized memory map starts could overflow. If the node's RAM end is not aligned on PAGES_PER_SECTION boundaries and some deferred struct pages were initialized, pgdat->first_deferred_pfn would point past the end of the node's memory. deferred_init_memmap() later picks up from pgdat->first_deferred_pfn and hits a BUG_ON(), because it expects a pfn within its node. For example, when running a kernel with CONFIG_DEFERRED_STRUCT_PAGE_INIT=y and CONFIG_CMA=y using the following qemu command line qemu-system-x86_64 -enable-kvm -m 8032M -kernel bzImage \ -append "nokaslr cma=4768M@0x100000000" the kernel panics: kernel BUG at mm/mm_init.c:2131! CPU: 3 UID: 0 PID: 36 Comm: pgdatinit0 Not tainted 7.2.0-rc6 #1 RIP: 0010:deferred_init_memmap+0x1b8/0x1c0 RAX: 0000000000236000 R13: 0000000000238000 Call Trace: kthread+0xdf/0x120 ret_from_fork+0x187/0x250 Make sure that the update of pgdta->first_deferred_pfn does not overflow when the entire zone's (and therefore node's) memory map is initialized. [rppt: massaged the changelog]

References

NVD — CVE-2026-93227 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93227
git.kernel.org/stable/c/45489d4f95... WEB
https://git.kernel.org/stable/c/45489d4f95802903ab35799b400b346fa4e13151
git.kernel.org/stable/c/84339578c2... WEB
https://git.kernel.org/stable/c/84339578c2d6936ac3a93cd1f0bbaa3468a988f2
git.kernel.org/stable/c/97090500d7... WEB
https://git.kernel.org/stable/c/97090500d776c3f6d08e857e3a0a7cf092999094

Frequently Asked Questions

What is CVE-2026-93227?
CVE-2026-93227 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-2026-93227?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-93227?
CVE-2026-93227 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93227?
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-x6mv-65qg-c346",
  "modified" : "2026-09-24T18:31:23Z",
  "published" : "2026-09-24T18:31:23Z",
  "aliases" : [ "CVE-2026-93227" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mm_init: deferred_grow_zone(): fix out-of-range first_deferred_pfn\n\nWith CONFIG_DEFERRED_STRUCT_PAGE_INIT enabled, deferred_grow_zone()\ninitializes struct pages early in boot to satisfy an allocation.\n\nWith a large CMA reservation in place, the ranges deferred_init_memmap()\nfinds may not add up to the allocation it was asked for, and the function\nends up initializing the memory map of the entire zone and still falls\nshort.\n\nThat is fine in itself: the function accounts for it and leaves the\ncaller to decide whether it now has enough memory.\n\nHowever, the update of pgdat->first_deferred_pfn that tracks where\nuninitialized memory map starts could overflow.\n\nIf the node's RAM end is not aligned on PAGES_PER_SECTION boundaries and\nsome deferred struct pages were initialized, pgdat->first_deferred_pfn\nwould point past the end of the node's memory.\n\ndeferred_init_memmap() later picks up from pgdat->first_deferred_pfn and\nhits a BUG_ON(), because it expects a pfn within its node.\n\nFor example, when running a kernel with CONFIG_DEFERRED_STRUCT_PAGE_INIT=y\nand CONFIG_CMA=y using the following qemu command line\n\n  qemu-system-x86_64 -enable-kvm -m 8032M -kernel bzImage \\\n      -append \"nokaslr cma=4768M@0x100000000\"\n\nthe kernel panics:\n\n  kernel BUG at mm/mm_init.c:2131!\n  CPU: 3 UID: 0 PID: 36 Comm: pgdatinit0 Not tainted 7.2.0-rc6 #1\n  RIP: 0010:deferred_init_memmap+0x1b8/0x1c0\n  RAX: 0000000000236000 R13: 0000000000238000\n  Call Trace:\n   kthread+0xdf/0x120\n   ret_from_fork+0x187/0x250\n\nMake sure that the update of pgdta->first_deferred_pfn does not overflow\nwhen the entire zone's (and therefore node's) memory map is initialized.\n\n[rppt: massaged the changelog]",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93227"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/45489d4f95802903ab35799b400b346fa4e13151"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/84339578c2d6936ac3a93cd1f0bbaa3468a988f2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/97090500d776c3f6d08e857e3a0a7cf092999094"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-24T16:17:18Z"
  }
}