CVE-2026-97554: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-vfwc-r92w-jp29
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Advisory Summary

CVE-2026-97554 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-2026-97554 at a Glance

CVE Identifier CVE-2026-97554
GHSA Identifier GHSA-vfwc-r92w-jp29
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-2026-97554

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-2026-97554, 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: smb: client: avoid using uninitialized SIDs in cifs_posix_to_fattr() cifs_posix_to_fattr() ignores the return value of posix_info_parse(). When a malformed POSIX directory entry is encountered (e.g. invalid SID lengths from an untrusted server), posix_info_parse() returns -1 without populating the 'parsed' struct. The uninitialized stack memory in parsed.owner and parsed.group is then passed to sid_to_id(), which processes the garbage bytes and passes them to request_key() to construct a SID string, potentially leaking kernel stack contents to the userspace idmap daemon. Fix this by checking the return value and skipping the SID-to-id mapping when parsing fails. The remaining fattr fields (timestamps, mode, etc.) are populated directly from the 'info' pointer so they are unaffected.

References

NVD — CVE-2026-97554 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-97554
git.kernel.org/stable/c/2be31f252a... WEB
https://git.kernel.org/stable/c/2be31f252ade791b84f7164991f14436aed1d4b9
git.kernel.org/stable/c/c9a8b60ce1... WEB
https://git.kernel.org/stable/c/c9a8b60ce140a68d172452f418137fc7ddbae7db
git.kernel.org/stable/c/da6e258424... WEB
https://git.kernel.org/stable/c/da6e25842431982d5a53cf00d925b98c690f4467

Frequently Asked Questions

What is CVE-2026-97554?
CVE-2026-97554 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-2026-97554?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-97554?
CVE-2026-97554 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-97554?
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-vfwc-r92w-jp29",
  "modified" : "2026-10-15T12:30:53Z",
  "published" : "2026-09-25T12:31:24Z",
  "aliases" : [ "CVE-2026-97554" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: avoid using uninitialized SIDs in cifs_posix_to_fattr()\n\ncifs_posix_to_fattr() ignores the return value of posix_info_parse().\nWhen a malformed POSIX directory entry is encountered (e.g. invalid\nSID lengths from an untrusted server), posix_info_parse() returns -1\nwithout populating the 'parsed' struct.  The uninitialized stack\nmemory in parsed.owner and parsed.group is then passed to\nsid_to_id(), which processes the garbage bytes and passes them to\nrequest_key() to construct a SID string, potentially leaking kernel\nstack contents to the userspace idmap daemon.\n\nFix this by checking the return value and skipping the SID-to-id\nmapping when parsing fails.  The remaining fattr fields (timestamps,\nmode, etc.) are populated directly from the 'info' pointer so they\nare unaffected.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-97554"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2be31f252ade791b84f7164991f14436aed1d4b9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c9a8b60ce140a68d172452f418137fc7ddbae7db"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/da6e25842431982d5a53cf00d925b98c690f4467"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-25T11:17:05Z"
  }
}