CVE-2026-93811: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-47cf-52hv-jjq9
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Advisory Summary

CVE-2026-93811 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-2026-93811 at a Glance

CVE Identifier CVE-2026-93811
GHSA Identifier GHSA-47cf-52hv-jjq9
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-2026-93811

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-2026-93811, 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: ksmbd: Fix acl.sd_buf memory leak and invalid sd_size error handling 1. When ndr_decode_v4_ntacl() fails, the code jumped to free_n_data which only freed n.data, skipping kfree(acl.sd_buf) and leaking the buffer. Zero-initialize struct xattr_ntacl acl, reorder error labels to out_free to release acl.sd_buf on all error paths. 2. if (acl.sd_size < sizeof(struct smb_ntsd)) is true, original code returned success without freeing sd_buf and left stale *pntsd. Set rc = -EINVAL before jumping to out_free to return error code and free buffer.

References

NVD — CVE-2026-93811 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93811
git.kernel.org/stable/c/6e6329322a... WEB
https://git.kernel.org/stable/c/6e6329322ad733c5b23555c609353841560b26bc
git.kernel.org/stable/c/86c2625fb9... WEB
https://git.kernel.org/stable/c/86c2625fb9863139b359805fc6be1e31edbd3d65
git.kernel.org/stable/c/c3836f55e0... WEB
https://git.kernel.org/stable/c/c3836f55e0dab96314774215e12d87f63fa919f2
git.kernel.org/stable/c/d708a36634... WEB
https://git.kernel.org/stable/c/d708a36634bb7b6f94d0e76d587d2ec50b2b93b5
git.kernel.org/stable/c/edc17db830... WEB
https://git.kernel.org/stable/c/edc17db83085624a2b1bacf6a4521d7f15571737
git.kernel.org/stable/c/f46a70a082... WEB
https://git.kernel.org/stable/c/f46a70a082bdbfecbe074af8a719c26c4deb58c6

Frequently Asked Questions

What is CVE-2026-93811?
CVE-2026-93811 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-2026-93811?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-93811?
CVE-2026-93811 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93811?
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-47cf-52hv-jjq9",
  "modified" : "2026-10-03T12:31:10Z",
  "published" : "2026-09-24T18:31:30Z",
  "aliases" : [ "CVE-2026-93811" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: Fix acl.sd_buf memory leak and invalid sd_size error handling\n\n1. When ndr_decode_v4_ntacl() fails, the code jumped to free_n_data\n   which only freed n.data, skipping kfree(acl.sd_buf) and leaking\n   the buffer. Zero-initialize struct xattr_ntacl acl, reorder error\n   labels to out_free to release acl.sd_buf on all error paths.\n\n2. if (acl.sd_size < sizeof(struct smb_ntsd)) is true, original code\n   returned success without freeing sd_buf and left stale *pntsd.\n   Set rc = -EINVAL before jumping to out_free to return error code and\n   free buffer.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93811"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6e6329322ad733c5b23555c609353841560b26bc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/86c2625fb9863139b359805fc6be1e31edbd3d65"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c3836f55e0dab96314774215e12d87f63fa919f2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d708a36634bb7b6f94d0e76d587d2ec50b2b93b5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/edc17db83085624a2b1bacf6a4521d7f15571737"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f46a70a082bdbfecbe074af8a719c26c4deb58c6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-24T17:17:14Z"
  }
}