CVE-2026-23074: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-7cwq-2xv8-7cqw
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CVSS 7.8
CWE-825 CWE-416
Published
Advisory Summary

CVE-2026-23074 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-825: Expired Pointer Dereference) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-23074 at a Glance

CVE Identifier CVE-2026-23074
GHSA Identifier GHSA-7cwq-2xv8-7cqw
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-825: Expired Pointer Dereference
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-2026-23074

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-2026-23074, 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 CWE-825: Expired Pointer Dereference, where the product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid. 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: net/sched: Enforce that teql can only be used as root qdisc Design intent of teql is that it is only supposed to be used as root qdisc. We need to check for that constraint. Although not important, I will describe the scenario that unearthed this issue for the curious. GangMin Kim <km.kim1503@gmail.com> managed to concot a scenario as follows: ROOT qdisc 1:0 (QFQ) ├── class 1:1 (weight=15, lmax=16384) netem with delay 6.4s └── class 1:2 (weight=1, lmax=1514) teql GangMin sends a packet which is enqueued to 1:1 (netem). Any invocation of dequeue by QFQ from this class will not return a packet until after 6.4s. In the meantime, a second packet is sent and it lands on 1:2. teql's enqueue will return success and this will activate class 1:2. Main issue is that teql only updates the parent visible qlen (sch->q.qlen) at dequeue. Since QFQ will only call dequeue if peek succeeds (and teql's peek always returns NULL), dequeue will never be called and thus the qlen will remain as 0. With that in mind, when GangMin updates 1:2's lmax value, the qfq_change_class calls qfq_deact_rm_from_agg. Since the child qdisc's qlen was not incremented, qfq fails to deactivate the class, but still frees its pointers from the aggregate. So when the first packet is rescheduled after 6.4 seconds (netem's delay), a dangling pointer is accessed causing GangMin's causing a UAF.

References

NVD — CVE-2026-23074 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23074
Software Security Information SECURITY
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23074.json
git.kernel.org/stable/c/dad49a67c2... WEB
https://git.kernel.org/stable/c/dad49a67c2d817bfec98e6e45121b351e3a0202c
git.kernel.org/stable/c/ae810e6a8a... WEB
https://git.kernel.org/stable/c/ae810e6a8ac4fe25042e6825d2a401207a2e41fb
git.kernel.org/stable/c/73d970ff0e... WEB
https://git.kernel.org/stable/c/73d970ff0eddd874a84c953387c7f4464b705fc6
git.kernel.org/stable/c/50da4b9d07... WEB
https://git.kernel.org/stable/c/50da4b9d07a7a463e2cfb738f3ad4cff6b2c9c3b
git.kernel.org/stable/c/4c7e8aa71c... WEB
https://git.kernel.org/stable/c/4c7e8aa71c9232cba84c289b4b56cba80b280841
git.kernel.org/stable/c/16ed73c128... WEB
https://git.kernel.org/stable/c/16ed73c1282d376b956bff23e5139add061767ba
git.kernel.org/stable/c/0686bedfed... WEB
https://git.kernel.org/stable/c/0686bedfed34155520f3f735cbf3210cb9044380
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2436791
Software Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-23074
access.redhat.com/errata/rhsa-2026:38... WEB
https://access.redhat.com/errata/RHSA-2026:3810
access.redhat.com/errata/rhsa-2026:36... WEB
https://access.redhat.com/errata/RHSA-2026:3685
access.redhat.com/errata/rhsa-2026:36... WEB
https://access.redhat.com/errata/RHSA-2026:3634
access.redhat.com/errata/rhsa-2026:33... WEB
https://access.redhat.com/errata/RHSA-2026:3388
access.redhat.com/errata/rhsa-2026:33... WEB
https://access.redhat.com/errata/RHSA-2026:3360
access.redhat.com/errata/rhsa-2026:32... WEB
https://access.redhat.com/errata/RHSA-2026:3277
access.redhat.com/errata/rhsa-2026:32... WEB
https://access.redhat.com/errata/RHSA-2026:3268
access.redhat.com/errata/rhsa-2026:31... WEB
https://access.redhat.com/errata/RHSA-2026:3110
access.redhat.com/errata/rhsa-2026:30... WEB
https://access.redhat.com/errata/RHSA-2026:3083

Frequently Asked Questions

What is CVE-2026-23074?
CVE-2026-23074 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-825: Expired Pointer Dereference.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-23074?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-23074?
CVE-2026-23074 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-2026-23074?
CVE-2026-23074 is classified under CWE-825: Expired Pointer Dereference (The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.).
How can I check Maven dependencies for CVE-2026-23074?
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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