CVE-2026-98171: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-68gh-wq6f-89rf
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CVSS 8.8
Published
Advisory Summary

CVE-2026-98171 is a HIGH (CVSS 8.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-98171 at a Glance

CVE Identifier CVE-2026-98171
GHSA Identifier GHSA-68gh-wq6f-89rf
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

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:R/S:U/C:H/I:H/A:H).

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

How to Fix CVE-2026-98171

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-2026-98171, 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: fix next_buffer UAF and NextCommand bounds in compound PDUs Fix several related bounds checking and pointer lifecycle issues in receive_encrypted_standard()'s handling of compound encrypted frames: - Clear next_buffer after assigning it to server->bigbuf. A stale next_buffer pointer can lead to a use-after-free on subsequent error paths. - Update pdu_length to the decrypted plaintext size (buf_size). Using the pre-decryption length allows NextCommand to point into stale ciphertext residue. - Reject next_cmd values smaller than MID_HEADER_SIZE(server). - Fix an integer overflow in the upper bound check by verifying pdu_length - next_cmd < MID_HEADER_SIZE(server), ensuring the trailing slice is large enough for a header.

References

NVD — CVE-2026-98171 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98171
git.kernel.org/stable/c/05762c5bc1... WEB
https://git.kernel.org/stable/c/05762c5bc1cfdcac36747994fde2c04387a457f1
git.kernel.org/stable/c/491e33144d... WEB
https://git.kernel.org/stable/c/491e33144dee872cffda207f6fcb09260728f803
git.kernel.org/stable/c/72eaef1f37... WEB
https://git.kernel.org/stable/c/72eaef1f37a3b6bec11c342736834dc3707be3e4
git.kernel.org/stable/c/858d5ac22c... WEB
https://git.kernel.org/stable/c/858d5ac22cb889266993e7670f9f0c4f4aeedd78
git.kernel.org/stable/c/8749946579... WEB
https://git.kernel.org/stable/c/8749946579708ea0d339034bb7f423a67dbe89cf
git.kernel.org/stable/c/96c436e4b0... WEB
https://git.kernel.org/stable/c/96c436e4b010711452b2872558938f4ef276492a

Frequently Asked Questions

What is CVE-2026-98171?
CVE-2026-98171 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-2026-98171?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-98171?
CVE-2026-98171 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-98171?
CVE-2026-98171 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98171?
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-68gh-wq6f-89rf",
  "modified" : "2026-10-07T09:32:12Z",
  "published" : "2026-10-06T09:31:28Z",
  "aliases" : [ "CVE-2026-98171" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix next_buffer UAF and NextCommand bounds in compound PDUs\n\nFix several related bounds checking and pointer lifecycle issues in\nreceive_encrypted_standard()'s handling of compound encrypted frames:\n\n- Clear next_buffer after assigning it to server->bigbuf. A stale\n  next_buffer pointer can lead to a use-after-free on subsequent\n  error paths.\n- Update pdu_length to the decrypted plaintext size (buf_size). Using\n  the pre-decryption length allows NextCommand to point into stale\n  ciphertext residue.\n- Reject next_cmd values smaller than MID_HEADER_SIZE(server).\n- Fix an integer overflow in the upper bound check by verifying\n  pdu_length - next_cmd < MID_HEADER_SIZE(server), ensuring the\n  trailing slice is large enough for a header.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98171"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/05762c5bc1cfdcac36747994fde2c04387a457f1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/491e33144dee872cffda207f6fcb09260728f803"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/72eaef1f37a3b6bec11c342736834dc3707be3e4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/858d5ac22cb889266993e7670f9f0c4f4aeedd78"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8749946579708ea0d339034bb7f423a67dbe89cf"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/96c436e4b010711452b2872558938f4ef276492a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-06T09:17:58Z"
  }
}