CVE-2026-89847: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-6f8q-4cvp-fr9q
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CVSS 9.8
Published
Advisory Summary

CVE-2026-89847 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89847 at a Glance

CVE Identifier CVE-2026-89847
GHSA Identifier GHSA-6f8q-4cvp-fr9q
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:N/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 None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-89847

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-2026-89847, 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: scsi: qla2xxx: Avoid double completion in async IOCB timeout qla2x00_async_iocb_timeout() tries to abort a timed-out async IOCB. When qla24xx_async_abort_cmd() fails, both the SRB_LOGIN_CMD path and the SRB_CTRL_VP/default path scan outstanding_cmds[] for the SRB and then call sp->done(sp, QLA_FUNCTION_TIMEOUT) unconditionally, without checking whether the SRB was actually found and removed. If the response ISR completes the same handle first, it removes the SRB under qp_lock_ptr and runs sp->done() -> complete(sp->comp). The submitter qla24xx_control_vp() wakes from wait_for_completion(), clears sp->comp, drops its reference and returns, reclaiming the on-stack completion. The timer reference keeps the SRB alive across the timeout handler, but not the submitter's stack. The timeout then issues a second sp->done() -> qla_ctrlvp_sp_done(), which evaluates "if (sp->comp) complete(sp->comp)"; with the pointer loaded before the submitter's NULL store, complete() writes into the freed stack frame, a use-after-free. Track whether this path removed the SRB from outstanding_cmds and only call sp->done() when it did, so the command is completed exactly once by whichever path owns it. This mirrors the sp_found guard already used in qla24xx_abort_iocb_timeout().

References

NVD — CVE-2026-89847 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89847
git.kernel.org/stable/c/6e217a9482... WEB
https://git.kernel.org/stable/c/6e217a9482eabbd8b29847be334c74cf468d3544
git.kernel.org/stable/c/71a7b6e3c7... WEB
https://git.kernel.org/stable/c/71a7b6e3c7f121439f51a058e53d4a8e05b63dec
git.kernel.org/stable/c/7257b5e1fb... WEB
https://git.kernel.org/stable/c/7257b5e1fb6c9387714f66e01b79ec82b717eede
git.kernel.org/stable/c/845d4abd92... WEB
https://git.kernel.org/stable/c/845d4abd92cd2f97551356c8b281ad6e197acb07
git.kernel.org/stable/c/9fa1d71233... WEB
https://git.kernel.org/stable/c/9fa1d71233a82416492d9c9de9756ebe140fe714
git.kernel.org/stable/c/bb45bc4bd5... WEB
https://git.kernel.org/stable/c/bb45bc4bd53c95a7bf6f782577b5ede94c0f8aa8
git.kernel.org/stable/c/d6d856c722... WEB
https://git.kernel.org/stable/c/d6d856c722f40f0694ff755208552e658db6dd42
git.kernel.org/stable/c/f5b660e0b0... WEB
https://git.kernel.org/stable/c/f5b660e0b0d9190d8853c795c2522cc5f8c93003

Frequently Asked Questions

What is CVE-2026-89847?
CVE-2026-89847 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-2026-89847?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89847?
CVE-2026-89847 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-89847?
CVE-2026-89847 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89847?
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-6f8q-4cvp-fr9q",
  "modified" : "2026-09-16T15:30:59Z",
  "published" : "2026-09-16T12:30:38Z",
  "aliases" : [ "CVE-2026-89847" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Avoid double completion in async IOCB timeout\n\nqla2x00_async_iocb_timeout() tries to abort a timed-out async IOCB. When\nqla24xx_async_abort_cmd() fails, both the SRB_LOGIN_CMD path and the\nSRB_CTRL_VP/default path scan outstanding_cmds[] for the SRB and then\ncall sp->done(sp, QLA_FUNCTION_TIMEOUT) unconditionally, without checking\nwhether the SRB was actually found and removed.\n\nIf the response ISR completes the same handle first, it removes the SRB\nunder qp_lock_ptr and runs sp->done() -> complete(sp->comp). The\nsubmitter qla24xx_control_vp() wakes from wait_for_completion(), clears\nsp->comp, drops its reference and returns, reclaiming the on-stack\ncompletion. The timer reference keeps the SRB alive across the timeout\nhandler, but not the submitter's stack. The timeout then issues a second\nsp->done() -> qla_ctrlvp_sp_done(), which evaluates \"if (sp->comp)\ncomplete(sp->comp)\"; with the pointer loaded before the submitter's NULL\nstore, complete() writes into the freed stack frame, a use-after-free.\n\nTrack whether this path removed the SRB from outstanding_cmds and only\ncall sp->done() when it did, so the command is completed exactly once by\nwhichever path owns it. This mirrors the sp_found guard already used in\nqla24xx_abort_iocb_timeout().",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
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    "url" : "https://git.kernel.org/stable/c/71a7b6e3c7f121439f51a058e53d4a8e05b63dec"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7257b5e1fb6c9387714f66e01b79ec82b717eede"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/845d4abd92cd2f97551356c8b281ad6e197acb07"
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    "url" : "https://git.kernel.org/stable/c/9fa1d71233a82416492d9c9de9756ebe140fe714"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bb45bc4bd53c95a7bf6f782577b5ede94c0f8aa8"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d6d856c722f40f0694ff755208552e658db6dd42"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f5b660e0b0d9190d8853c795c2522cc5f8c93003"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T11:16:51Z"
  }
}