CVE-2026-63798: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-2332-q5fp-53mf
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CVSS 5.5
CWE-401
Published
Advisory Summary

CVE-2026-63798 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-401: Missing Release of Memory after Effective Lifetime) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-63798 at a Glance

CVE Identifier CVE-2026-63798
GHSA Identifier GHSA-2332-q5fp-53mf
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-401: Missing Release of Memory after Effective Lifetime
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

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:N/I:N/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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-63798

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-2026-63798, 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-401: Missing Release of Memory after Effective Lifetime, where the product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. 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: irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove The driver allocates domain generic chips using irq_alloc_domain_generic_chips() during probe and sets up chained handlers using irq_set_chained_handler_and_data(). However, on driver removal, the generic chips are not freed and the chained handlers are not removed. The generic chips remain on the global gc_list and may later be accessed by generic interrupt chip suspend, resume, or shutdown callbacks after the driver has been removed, potentially resulting in a use-after-free and kernel crash. The chained handlers that were installed in probe for peripheral and syswake interrupts are also left dangling, which can lead to spurious interrupts accessing freed memory. Fix these issues by: - Setting IRQ_DOMAIN_FLAG_DESTROY_GC flag in domain->flags, so the core code automatically removes generic chips when irq_domain_remove() is called - Clearing all chained handlers with NULL in pdc_intc_remove()

References

NVD — CVE-2026-63798 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63798
git.kernel.org/stable/c/0405a65e4e... WEB
https://git.kernel.org/stable/c/0405a65e4ebd9eac13a765f9f02ac05851ca5421
git.kernel.org/stable/c/37738fdf2a... WEB
https://git.kernel.org/stable/c/37738fdf2ab1e504d1c63ce5bc0aeb6452d8f057
git.kernel.org/stable/c/41826e5297... WEB
https://git.kernel.org/stable/c/41826e5297e67cd96a0a46fde06a5069a8ce436a
git.kernel.org/stable/c/44567537a2... WEB
https://git.kernel.org/stable/c/44567537a2623dcd2b4018a7f043cf8069579e5d
git.kernel.org/stable/c/8176773dfc... WEB
https://git.kernel.org/stable/c/8176773dfceae7978b01c20b233693e072053700
git.kernel.org/stable/c/83d7ec14b0... WEB
https://git.kernel.org/stable/c/83d7ec14b0938ad8cae008058fd6f912f4a9a312
git.kernel.org/stable/c/b3a3831b2e... WEB
https://git.kernel.org/stable/c/b3a3831b2eb884641906fc5e46207b205b6aea13
git.kernel.org/stable/c/c2c7733101... WEB
https://git.kernel.org/stable/c/c2c7733101bb8c0b29ac9ee41073eaf602821a59

Frequently Asked Questions

What is CVE-2026-63798?
CVE-2026-63798 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-401: Missing Release of Memory after Effective Lifetime.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-63798?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-63798?
CVE-2026-63798 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-63798?
CVE-2026-63798 is classified under CWE-401: Missing Release of Memory after Effective Lifetime (The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.).
How can I check Maven dependencies for CVE-2026-63798?
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-2332-q5fp-53mf",
  "modified" : "2026-07-29T21:30:53Z",
  "published" : "2026-07-19T12:30:23Z",
  "aliases" : [ "CVE-2026-63798" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove\n\nThe driver allocates domain generic chips using\nirq_alloc_domain_generic_chips() during probe and sets up chained\nhandlers using irq_set_chained_handler_and_data(). However, on driver\nremoval, the generic chips are not freed and the chained handlers are\nnot removed.\n\nThe generic chips remain on the global gc_list and may later be accessed by\ngeneric interrupt chip suspend, resume, or shutdown callbacks after the\ndriver has been removed, potentially resulting in a use-after-free and\nkernel crash.\n\nThe chained handlers that were installed in probe for peripheral and\nsyswake interrupts are also left dangling, which can lead to spurious\ninterrupts accessing freed memory.\n\nFix these issues by:\n\n  - Setting IRQ_DOMAIN_FLAG_DESTROY_GC flag in domain->flags, so the\n    core code automatically removes generic chips when irq_domain_remove()\n    is called\n\n  - Clearing all chained handlers with NULL in pdc_intc_remove()",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-63798"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0405a65e4ebd9eac13a765f9f02ac05851ca5421"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/37738fdf2ab1e504d1c63ce5bc0aeb6452d8f057"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/41826e5297e67cd96a0a46fde06a5069a8ce436a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/44567537a2623dcd2b4018a7f043cf8069579e5d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8176773dfceae7978b01c20b233693e072053700"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/83d7ec14b0938ad8cae008058fd6f912f4a9a312"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b3a3831b2eb884641906fc5e46207b205b6aea13"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c2c7733101bb8c0b29ac9ee41073eaf602821a59"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-401" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T12:16:52Z"
  }
}