CVE-2026-93191: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-9697-g343-86c8
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Advisory Summary

CVE-2026-93191 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-2026-93191 at a Glance

CVE Identifier CVE-2026-93191
GHSA Identifier GHSA-9697-g343-86c8
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-2026-93191

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-2026-93191, 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: smack: fix incorrect task context in smack_msg_queue_msgrcv The smack_msg_queue_msgrcv() function incorrectly checks the permissions of the 'current' task instead of the 'target' task. In the msgsnd() syscall path, if a receiver is already waiting, the pipelined_send() optimization is used to push the message directly to the receiver task: ipc/msg.c`pipelined_send(): ` smp_store_release(&msr->r_msg, msg) In this case, the 'sender' (current) task performs the check on behalf of the 'receiver' task (msr->r_tsk, passed as the 'target' parameter): ipc/msg.c`pipelined_send(): ` security_msg_queue_msgrcv(,, target := msr->r_tsk,,) However, smack_msg_queue_msgrcv() ignores the 'target' and checks 'current': smack_msg_queue_msgrcv(…) ` smk_curacc_msq(isp, MAY_READWRITE); // current task 'current' MAY satisfy smack_msg_queue_msgrcv r/w requirement, but 'target' (the receiver task) might NOT; as a result, an unauthorized receiver gets the message, violating MAC policy. Test: 1) create a sysv message queue with label “foo” 2) echo "bar foo r" >/smack/load2 3) msgrcv(,,,0,MSG_NOERROR) in "bar"-labeled task. The task is waiting for the messages ... 4) msgsnd() from a "foo"-labeled task: "bar"-labeled task gets the message. This patch fixes the issue by checking permission on the 'target' task instead of 'current'. (2008-02-04, Casey Schaufler)

References

NVD — CVE-2026-93191 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93191
git.kernel.org/stable/c/4e49f997ef... WEB
https://git.kernel.org/stable/c/4e49f997ef0c569e09b42aab6bd38c7c54ea095d
git.kernel.org/stable/c/7be4bd21c5... WEB
https://git.kernel.org/stable/c/7be4bd21c50afa83c93799b0f16cf5bfa493194e
git.kernel.org/stable/c/c2ab27c2e1... WEB
https://git.kernel.org/stable/c/c2ab27c2e11591524b1378c24ad18882a425d1fa
git.kernel.org/stable/c/d02c55e3ea... WEB
https://git.kernel.org/stable/c/d02c55e3ea82e41ea2c2026e08201e5daa4d0cfe
git.kernel.org/stable/c/dbece6c2f8... WEB
https://git.kernel.org/stable/c/dbece6c2f80b0470d8d99d7a016827dce99ed6e3
git.kernel.org/stable/c/e35dc5a4ed... WEB
https://git.kernel.org/stable/c/e35dc5a4ed6d1e536382d80c685187511ff248a1
git.kernel.org/stable/c/ec47f41770... WEB
https://git.kernel.org/stable/c/ec47f4177046dfaaf1cebb15f4d2e7b543475daf
git.kernel.org/stable/c/fba3d32825... WEB
https://git.kernel.org/stable/c/fba3d32825f4bbc8e20f0cdc3b14df57965b8fe5

Frequently Asked Questions

What is CVE-2026-93191?
CVE-2026-93191 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-2026-93191?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-93191?
CVE-2026-93191 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93191?
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-9697-g343-86c8",
  "modified" : "2026-09-17T18:32:13Z",
  "published" : "2026-09-17T18:32:13Z",
  "aliases" : [ "CVE-2026-93191" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsmack: fix incorrect task context in smack_msg_queue_msgrcv\n\nThe smack_msg_queue_msgrcv() function incorrectly checks\nthe permissions of the 'current' task instead of the\n'target' task.\n\nIn the msgsnd() syscall path, if a receiver is already waiting,\nthe pipelined_send() optimization is used to push the message\ndirectly to the receiver task:\n\n    ipc/msg.c`pipelined_send():\n    ` smp_store_release(&msr->r_msg, msg)\n\nIn this case, the 'sender' (current) task performs the check\non behalf of the 'receiver' task (msr->r_tsk, passed as the\n'target' parameter):\n\n  ipc/msg.c`pipelined_send():\n  ` security_msg_queue_msgrcv(,, target := msr->r_tsk,,)\n\nHowever, smack_msg_queue_msgrcv() ignores the 'target' and\nchecks 'current':\n\n  smack_msg_queue_msgrcv(…)\n  ` smk_curacc_msq(isp, MAY_READWRITE); // current task\n\n'current' MAY satisfy smack_msg_queue_msgrcv r/w requirement,\nbut 'target' (the receiver task) might NOT;\nas a result, an unauthorized receiver gets the message,\nviolating MAC policy.\n\nTest:\n1) create a sysv message queue with label “foo”\n2) echo \"bar foo r\" >/smack/load2\n3) msgrcv(,,,0,MSG_NOERROR) in \"bar\"-labeled task.\n    The task is waiting for the messages ...\n4) msgsnd() from a \"foo\"-labeled task:\n\"bar\"-labeled task gets the message.\n\nThis patch fixes the issue by checking permission on the\n'target' task instead of 'current'.\n\n(2008-02-04, Casey Schaufler)",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93191"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4e49f997ef0c569e09b42aab6bd38c7c54ea095d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7be4bd21c50afa83c93799b0f16cf5bfa493194e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c2ab27c2e11591524b1378c24ad18882a425d1fa"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d02c55e3ea82e41ea2c2026e08201e5daa4d0cfe"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dbece6c2f80b0470d8d99d7a016827dce99ed6e3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e35dc5a4ed6d1e536382d80c685187511ff248a1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ec47f4177046dfaaf1cebb15f4d2e7b543475daf"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fba3d32825f4bbc8e20f0cdc3b14df57965b8fe5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:18:15Z"
  }
}