CVE-2026-74594: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-2rjf-492g-58r9
Share
CVSS 7.8
Published
Advisory Summary

CVE-2026-74594 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74594 at a Glance

CVE Identifier CVE-2026-74594
GHSA Identifier GHSA-2rjf-492g-58r9
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2026-74594

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-2026-74594, 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: sched/psi: Shut down rtpoll_timer in psi_cgroup_free() psi_schedule_rtpoll_work() is called locklessly from the scheduler hotpath and can race psi_trigger_destroy() taking down the last rtpoll trigger under rtpoll_trigger_lock: psi_schedule_rtpoll_work() psi_trigger_destroy() rcu_read_lock(); task = rcu_dereference(rtpoll_task); rcu_assign_pointer(rtpoll_task, NULL); timer_delete(&rtpoll_timer); mod_timer(&rtpoll_timer, ...); rcu_read_unlock(); synchronize_rcu(); kthread_stop(task_to_destroy); The group can then be freed with the re-armed timer still pending, and poll_timer_fn() runs on freed memory. 461daba06bdc ("psi: eliminate kthread_worker from psi trigger scheduling mechanism") deleted the timer synchronously after the synchronize_rcu(), which prevented this but raced trigger creation instead: the deletion could cancel the timer that a new trigger set armed during the grace period and, as creation also reinitialized the timer at the time, corrupt it. 8f91efd870ea ("psi: Fix race between psi_trigger_create/destroy") moved the initialization into group_init() and the deletion into the locked section, trading the creation races for the window above. Neither placement in the destruction path works. A pending timer firing while the group is alive is harmless though. poll_timer_fn() just wakes the rtpoll waitqueue and doesn't re-arm itself. Bind the timer to the group's lifetime instead and shut it down in psi_cgroup_free(). Nothing can arm it by then. timer_shutdown_sync() because the timer is never armed again.

References

NVD — CVE-2026-74594 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74594
git.kernel.org/stable/c/1e5ca82eee... WEB
https://git.kernel.org/stable/c/1e5ca82eee59caca6988f9d6e859786aab8a5fa0
git.kernel.org/stable/c/310b5a537a... WEB
https://git.kernel.org/stable/c/310b5a537a78c358a4cd244bd767c1a517a05459
git.kernel.org/stable/c/4addb10215... WEB
https://git.kernel.org/stable/c/4addb102154b7cf6e2310ccbe20c3c08619e520d
git.kernel.org/stable/c/5457025fa8... WEB
https://git.kernel.org/stable/c/5457025fa8ca3c0d2732109513de839e3e797190
git.kernel.org/stable/c/611e7821c4... WEB
https://git.kernel.org/stable/c/611e7821c4f83a671455658797336faecc3a5196
git.kernel.org/stable/c/8037c5b2b2... WEB
https://git.kernel.org/stable/c/8037c5b2b2a447df52542f4d8535895d837bdcbd
git.kernel.org/stable/c/806fcff98c... WEB
https://git.kernel.org/stable/c/806fcff98c1d7cb3c1dc0015e55ebdbe819e6b08
git.kernel.org/stable/c/894a9300d7... WEB
https://git.kernel.org/stable/c/894a9300d7fb2e2951da92e565ae6de7ddfb0a69

Frequently Asked Questions

What is CVE-2026-74594?
CVE-2026-74594 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-2026-74594?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74594?
CVE-2026-74594 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74594?
CVE-2026-74594 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74594?
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-2rjf-492g-58r9",
  "modified" : "2026-08-25T06:31:21Z",
  "published" : "2026-08-22T18:30:25Z",
  "aliases" : [ "CVE-2026-74594" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/psi: Shut down rtpoll_timer in psi_cgroup_free()\n\npsi_schedule_rtpoll_work() is called locklessly from the scheduler hotpath\nand can race psi_trigger_destroy() taking down the last rtpoll trigger under\nrtpoll_trigger_lock:\n\n  psi_schedule_rtpoll_work()        psi_trigger_destroy()\n\n  rcu_read_lock();\n  task = rcu_dereference(rtpoll_task);\n                                    rcu_assign_pointer(rtpoll_task, NULL);\n                                    timer_delete(&rtpoll_timer);\n  mod_timer(&rtpoll_timer, ...);\n  rcu_read_unlock();\n                                    synchronize_rcu();\n                                    kthread_stop(task_to_destroy);\n\nThe group can then be freed with the re-armed timer still pending, and\npoll_timer_fn() runs on freed memory.\n\n461daba06bdc (\"psi: eliminate kthread_worker from psi trigger scheduling\nmechanism\") deleted the timer synchronously after the synchronize_rcu(),\nwhich prevented this but raced trigger creation instead: the deletion could\ncancel the timer that a new trigger set armed during the grace period and,\nas creation also reinitialized the timer at the time, corrupt it.\n8f91efd870ea (\"psi: Fix race between psi_trigger_create/destroy\") moved the\ninitialization into group_init() and the deletion into the locked section,\ntrading the creation races for the window above.\n\nNeither placement in the destruction path works. A pending timer firing\nwhile the group is alive is harmless though. poll_timer_fn() just wakes the\nrtpoll waitqueue and doesn't re-arm itself. Bind the timer to the group's\nlifetime instead and shut it down in psi_cgroup_free(). Nothing can arm it\nby then. timer_shutdown_sync() because the timer is never armed again.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74594"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1e5ca82eee59caca6988f9d6e859786aab8a5fa0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/310b5a537a78c358a4cd244bd767c1a517a05459"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4addb102154b7cf6e2310ccbe20c3c08619e520d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5457025fa8ca3c0d2732109513de839e3e797190"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/611e7821c4f83a671455658797336faecc3a5196"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8037c5b2b2a447df52542f4d8535895d837bdcbd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/806fcff98c1d7cb3c1dc0015e55ebdbe819e6b08"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/894a9300d7fb2e2951da92e565ae6de7ddfb0a69"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-22T16:16:31Z"
  }
}