CVE-2026-97557: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-v47h-9mpw-4682
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CVSS 7.5
Published
Advisory Summary

CVE-2026-97557 is a HIGH (CVSS 7.5) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-97557 at a Glance

CVE Identifier CVE-2026-97557
GHSA Identifier GHSA-v47h-9mpw-4682
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-97557

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-2026-97557, 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 leaking refcount in cifs_queue_oplock_break() cifs_queue_oplock_break() unconditionally takes a reference on the target file before queueing cifs_oplock_break(). Only that work item decreases the reference counter again. If another oplock break arrives while that work is still queued, queue_work() will return false and not queue this second work item. As a result, we will never reach the point to drop the file reference again and are leaking this reference. This can be triggered when interacting with a slow-responding server. As a result, later unmount operations for this file system will fail with BUG: Dentry ... still in use (1) [unmount of cifs cifs] VFS: Busy inodes after unmount of cifs (cifs) kernel BUG at fs/super.c:777! Fix this by only incrementing the reference count if the work has been queued successfully. Taking it after queue_work() is safe because all three callers hold tcon->open_file_lock across the call and _cifsFileInfo_put() decrements under that same lock, so a worker that starts the handler in the window cannot drop the reference before it has been taken.

References

NVD — CVE-2026-97557 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-97557
git.kernel.org/stable/c/2ed2c29dd9... WEB
https://git.kernel.org/stable/c/2ed2c29dd9593637cfa25ac1eb23241b20202778
git.kernel.org/stable/c/735a3a6101... WEB
https://git.kernel.org/stable/c/735a3a610136ae10f381d0909dff38e5b5c5f056
git.kernel.org/stable/c/9f2e63f1b2... WEB
https://git.kernel.org/stable/c/9f2e63f1b2d5fc5b5423424902c091123e220e7e
git.kernel.org/stable/c/af0193bbf1... WEB
https://git.kernel.org/stable/c/af0193bbf1ac8c0f67f972998b0cc629d6116cf6
git.kernel.org/stable/c/de2a6bcff2... WEB
https://git.kernel.org/stable/c/de2a6bcff2659bea40c7485115b57f0ae189fc01
git.kernel.org/stable/c/dfe7b750c7... WEB
https://git.kernel.org/stable/c/dfe7b750c7e069873a8a57a11c816831a235618a

Frequently Asked Questions

What is CVE-2026-97557?
CVE-2026-97557 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-2026-97557?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-97557?
CVE-2026-97557 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-97557?
CVE-2026-97557 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-97557?
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 
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  "id" : "GHSA-v47h-9mpw-4682",
  "modified" : "2026-10-03T12:31:16Z",
  "published" : "2026-09-25T12:31:24Z",
  "aliases" : [ "CVE-2026-97557" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: avoid leaking refcount in cifs_queue_oplock_break()\n\ncifs_queue_oplock_break() unconditionally takes a reference on the\ntarget file before queueing cifs_oplock_break(). Only that work item\ndecreases the reference counter again.\n\nIf another oplock break arrives while that work is still queued,\nqueue_work() will return false and not queue this second work item. As a\nresult, we will never reach the point to drop the file reference again\nand are leaking this reference. This can be triggered when interacting\nwith a slow-responding server.\n\nAs a result, later unmount operations for this file system will fail with\n\n  BUG: Dentry ... still in use (1) [unmount of cifs cifs]\n  VFS: Busy inodes after unmount of cifs (cifs)\n  kernel BUG at fs/super.c:777!\n\nFix this by only incrementing the reference count if the work has been\nqueued successfully. Taking it after queue_work() is safe because all\nthree callers hold tcon->open_file_lock across the call and\n_cifsFileInfo_put() decrements under that same lock, so a worker that\nstarts the handler in the window cannot drop the reference before it has\nbeen taken.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-97557"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2ed2c29dd9593637cfa25ac1eb23241b20202778"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/735a3a610136ae10f381d0909dff38e5b5c5f056"
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/af0193bbf1ac8c0f67f972998b0cc629d6116cf6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/de2a6bcff2659bea40c7485115b57f0ae189fc01"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dfe7b750c7e069873a8a57a11c816831a235618a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-25T11:17:06Z"
  }
}