CVE-2026-93781: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-3mhv-m8g9-8q53
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Advisory Summary

CVE-2026-93781 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-2026-93781 at a Glance

CVE Identifier CVE-2026-93781
GHSA Identifier GHSA-3mhv-m8g9-8q53
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-2026-93781

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-2026-93781, 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: core: Do not block on tag allocation in scsi_eh_lock_door() scsi_eh_lock_door() is called from scsi_restart_operations() while the host is still in the SHOST_RECOVERY state, i.e. before the host is switched back to SHOST_RUNNING and scsi_run_host_queues() restarts the queues. It allocates a request via scsi_alloc_request() with no flags, so blk_mq_get_tag() may block waiting for a free sched tag when all tags are already in use. Those tags can be held by commands that were just requeued by scsi_eh_flush_done_q() during error handling. Such commands cannot be dispatched until the host leaves SHOST_RECOVERY and scsi_run_host_queues() is called - which only happens *after* scsi_eh_lock_door() returns. This forms a circular dependency: - scsi_eh_lock_door(), running in the SCSI error handler thread, waits for a sched tag held by a requeued command; - the requeued command cannot complete and release its sched tag until the error handler thread leaves scsi_restart_operations() and restart the queues. For devices with a single driver tag (e.g. USB storage) it is a guaranteed deadlock and I/O that can never be submitted. This problem has also been reproduced in our environment. Locking the door is a best-effort operation, and scsi_eh_lock_door() already returns silently when the request allocation fails. Pass BLK_MQ_REQ_NOWAIT to scsi_alloc_request() so the allocation fails instead of blocking when no tag is available. This breaks the circular dependency and allows the error handler to finish restarting the queues, after which the pending commands are dispatched normally.

References

NVD — CVE-2026-93781 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93781
git.kernel.org/stable/c/261c80a6b2... WEB
https://git.kernel.org/stable/c/261c80a6b23e34ba98bcf3f75317e35ecf0a08f0
git.kernel.org/stable/c/3bc7af4cef... WEB
https://git.kernel.org/stable/c/3bc7af4cefac1c583f0607f6183a67012436aad9
git.kernel.org/stable/c/6b450c277c... WEB
https://git.kernel.org/stable/c/6b450c277c106c4e31411067f025d1aaa27c2a02
git.kernel.org/stable/c/732cb6bb37... WEB
https://git.kernel.org/stable/c/732cb6bb37fd26863d5786522fb1997e7f5865b4
git.kernel.org/stable/c/dc9e1b6b90... WEB
https://git.kernel.org/stable/c/dc9e1b6b9080dd6374cc9a38e4b53abca63c3b1b

Frequently Asked Questions

What is CVE-2026-93781?
CVE-2026-93781 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-2026-93781?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-93781?
CVE-2026-93781 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93781?
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-3mhv-m8g9-8q53",
  "modified" : "2026-10-03T12:31:08Z",
  "published" : "2026-09-24T18:31:28Z",
  "aliases" : [ "CVE-2026-93781" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: Do not block on tag allocation in scsi_eh_lock_door()\n\nscsi_eh_lock_door() is called from scsi_restart_operations() while the\nhost is still in the SHOST_RECOVERY state, i.e. before the host is\nswitched back to SHOST_RUNNING and scsi_run_host_queues() restarts the\nqueues. It allocates a request via scsi_alloc_request() with no flags,\nso blk_mq_get_tag() may block waiting for a free sched tag when all tags\nare already in use.\n\nThose tags can be held by commands that were just requeued by\nscsi_eh_flush_done_q() during error handling. Such commands cannot be\ndispatched until the host leaves SHOST_RECOVERY and\nscsi_run_host_queues() is called - which only happens *after*\nscsi_eh_lock_door() returns.\n\nThis forms a circular dependency:\n\n  - scsi_eh_lock_door(), running in the SCSI error handler thread, waits\n    for a sched tag held by a requeued command;\n\n  - the requeued command cannot complete and release its sched tag until\n    the error handler thread leaves scsi_restart_operations() and restart\n    the queues.\n\nFor devices with a single driver tag (e.g. USB storage) it is a\nguaranteed deadlock and I/O that can never be submitted. This problem\nhas also been reproduced in our environment.\n\nLocking the door is a best-effort operation, and scsi_eh_lock_door()\nalready returns silently when the request allocation fails. Pass\nBLK_MQ_REQ_NOWAIT to scsi_alloc_request() so the allocation fails\ninstead of blocking when no tag is available. This breaks the circular\ndependency and allows the error handler to finish restarting the queues,\nafter which the pending commands are dispatched normally.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93781"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/261c80a6b23e34ba98bcf3f75317e35ecf0a08f0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3bc7af4cefac1c583f0607f6183a67012436aad9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6b450c277c106c4e31411067f025d1aaa27c2a02"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/732cb6bb37fd26863d5786522fb1997e7f5865b4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dc9e1b6b9080dd6374cc9a38e4b53abca63c3b1b"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-24T17:17:10Z"
  }
}