CVE-2026-93266: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-xvwh-h3f9-mq6w
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Advisory Summary

CVE-2026-93266 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-2026-93266 at a Glance

CVE Identifier CVE-2026-93266
GHSA Identifier GHSA-xvwh-h3f9-mq6w
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-2026-93266

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-2026-93266, 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: arm64: RSI: fix field-spanning write warning in attestation token init The challenge is passed in registers a1 through a8. However, copying to &regs.a1 makes FORTIFY treat the destination as the single a1 field, resulting in a field-spanning write warning. [1] Overlay the SMCCC register structure with an RSI-specific argument layout and copy the challenge into an explicit 64-byte array. This keeps the existing a1-a8 argument encoding while giving the copy a correctly sized destination object. [1] memcpy: detected field-spanning write (size 64) of single field "&regs.a1" at ./arch/arm64/include/asm/rsi_cmds.h:119 (size 8) WARNING: ./arch/arm64/include/asm/rsi_cmds.h:119 at rsi_attestation_token_init+0xdc/0xf8 [arm_cca_guest], CPU#0: cat/3314

References

NVD — CVE-2026-93266 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93266
git.kernel.org/stable/c/221049874b... WEB
https://git.kernel.org/stable/c/221049874b6a78c7d87bc826581b0695cd338e2b
git.kernel.org/stable/c/d29a8ee271... WEB
https://git.kernel.org/stable/c/d29a8ee271da17b5e32d7a76a9c78d43f66447ca
git.kernel.org/stable/c/e505092cb2... WEB
https://git.kernel.org/stable/c/e505092cb200d430d5b8d8d3e926d45f29474ba3

Frequently Asked Questions

What is CVE-2026-93266?
CVE-2026-93266 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-2026-93266?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-93266?
CVE-2026-93266 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93266?
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-xvwh-h3f9-mq6w",
  "modified" : "2026-09-24T18:31:24Z",
  "published" : "2026-09-24T18:31:24Z",
  "aliases" : [ "CVE-2026-93266" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: RSI: fix field-spanning write warning in attestation token init\n\nThe challenge is passed in registers a1 through a8. However, copying to\n&regs.a1 makes FORTIFY treat the destination as the single a1 field,\nresulting in a field-spanning write warning. [1]\n\nOverlay the SMCCC register structure with an RSI-specific argument\nlayout and copy the challenge into an explicit 64-byte array. This keeps\nthe existing a1-a8 argument encoding while giving the copy a correctly\nsized destination object.\n\n[1]\nmemcpy: detected field-spanning write (size 64) of single field \"&regs.a1\" at ./arch/arm64/include/asm/rsi_cmds.h:119 (size 8)\nWARNING: ./arch/arm64/include/asm/rsi_cmds.h:119 at rsi_attestation_token_init+0xdc/0xf8 [arm_cca_guest], CPU#0: cat/3314",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93266"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/221049874b6a78c7d87bc826581b0695cd338e2b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d29a8ee271da17b5e32d7a76a9c78d43f66447ca"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e505092cb200d430d5b8d8d3e926d45f29474ba3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-24T16:17:23Z"
  }
}