CVE-2026-45998: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-mjcm-hf7x-hm3w
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CVSS 7.8
CWE-825 CWE-416
Published
Advisory Summary

CVE-2026-45998 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occurs when the product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid..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-2026-45998 at a Glance

CVE Identifier CVE-2026-45998
GHSA Identifier GHSA-mjcm-hf7x-hm3w
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-2026-45998

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-2026-45998, 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: rxrpc: Fix potential UAF after skb_unshare() failure If skb_unshare() fails to unshare a packet due to allocation failure in rxrpc_input_packet(), the skb pointer in the parent (rxrpc_io_thread()) will be NULL'd out. This will likely cause the call to trace_rxrpc_rx_done() to oops. Fix this by moving the unsharing down to where rxrpc_input_call_event() calls rxrpc_input_call_packet(). There are a number of places prior to that where we ignore DATA packets for a variety of reasons (such as the call already being complete) for which an unshare is then avoided. And with that, rxrpc_input_packet() doesn't need to take a pointer to the pointer to the packet, so change that to just a pointer.

References

NVD — CVE-2026-45998 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45998
access.redhat.com/errata/rhsa-2026:34... WEB
https://access.redhat.com/errata/RHSA-2026:34911
access.redhat.com/errata/rhsa-2026:55... WEB
https://access.redhat.com/errata/RHSA-2026:55445
access.redhat.com/errata/rhsa-2026:65... WEB
https://access.redhat.com/errata/RHSA-2026:65708
access.redhat.com/errata/rhsa-2026:65... WEB
https://access.redhat.com/errata/RHSA-2026:65712
access.redhat.com/errata/rhsa-2026:67... WEB
https://access.redhat.com/errata/RHSA-2026:67721
access.redhat.com/errata/rhsa-2026:67... WEB
https://access.redhat.com/errata/RHSA-2026:67723
Software Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-45998
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2482024
git.kernel.org/stable/c/1f2740150f... WEB
https://git.kernel.org/stable/c/1f2740150f904bfa60e4bad74d65add3ccb5e7f8
git.kernel.org/stable/c/8fde6296c4... WEB
https://git.kernel.org/stable/c/8fde6296c4d4da2be7ab761305ab7f232b94eefd
git.kernel.org/stable/c/996b0487b3... WEB
https://git.kernel.org/stable/c/996b0487b3cdda4c91811dbb1c9564626bc840bd
git.kernel.org/stable/c/bf20f46d94... WEB
https://git.kernel.org/stable/c/bf20f46d94f1db38e6ffc0ca204a5fe0de01b495
git.kernel.org/stable/c/e3bf143b1e... WEB
https://git.kernel.org/stable/c/e3bf143b1e98fb3d6d9e6825bcd683974d478e8c
Software Security Information SECURITY
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45998.json

Frequently Asked Questions

What is CVE-2026-45998?
CVE-2026-45998 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-2026-45998?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-45998?
CVE-2026-45998 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-2026-45998?
CVE-2026-45998 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-2026-45998?
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-mjcm-hf7x-hm3w",
  "modified" : "2026-09-16T15:30:36Z",
  "published" : "2026-05-27T15:33:20Z",
  "aliases" : [ "CVE-2026-45998" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix potential UAF after skb_unshare() failure\n\nIf skb_unshare() fails to unshare a packet due to allocation failure in\nrxrpc_input_packet(), the skb pointer in the parent (rxrpc_io_thread())\nwill be NULL'd out.  This will likely cause the call to\ntrace_rxrpc_rx_done() to oops.\n\nFix this by moving the unsharing down to where rxrpc_input_call_event()\ncalls rxrpc_input_call_packet().  There are a number of places prior to\nthat where we ignore DATA packets for a variety of reasons (such as the\ncall already being complete) for which an unshare is then avoided.\n\nAnd with that, rxrpc_input_packet() doesn't need to take a pointer to the\npointer to the packet, so change that to just a pointer.",
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    "url" : "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45998.json"
  } ],
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    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-27T14:17:17Z"
  }
}