CVE-2026-80620: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-wrw8-wwxf-qp7r
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Advisory Summary

CVE-2026-80620 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-2026-80620 at a Glance

CVE Identifier CVE-2026-80620
GHSA Identifier GHSA-wrw8-wwxf-qp7r
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-2026-80620

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-2026-80620, 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: Revert "PCI/MSI: Unmap MSI-X region on error" This reverts commit 1a8d4c6ecb4c81261bcdf13556abd4a958eca202. Commit 1a8d4c6ecb4c ("PCI/MSI: Unmap MSI-X region on error") added an iounmap(dev->msix_base) on the error path of msix_capability_init() to release the MSI-X region when msix_setup_interrupts() fails. When msix_setup_interrupts() fails, the call chain is: msix_setup_interrupts() -> __msix_setup_interrupts() struct pci_dev *dev __free(free_msi_irqs) = __dev; ... return ret; // __free cleanup fires on error The __free(free_msi_irqs) cleanup calls pci_free_msi_irqs(), which already handles the unmap: void pci_free_msi_irqs(struct pci_dev *dev) { pci_msi_teardown_msi_irqs(dev); if (dev->msix_base) { iounmap(dev->msix_base); // already unmapped here dev->msix_base = NULL; // and set to NULL } } So dev->msix_base is unmapped and set to NULL before msix_setup_interrupts() returns to msix_capability_init(). The "goto out_unmap" introduced by commit 1a8d4c6ecb4c ("PCI/MSI: Unmap MSI-X region on error") then calls iounmap() a second time on a NULL pointer. This was reproduced on Intel Emerald Rapids (192 CPUs) while running tools/testing/selftests/kexec/test_kexec_jump.sh: WARNING: CPU#44 at iounmap+0x2a/0xe0 RIP: 0010:iounmap+0x2a/0xe0 RDI: 0000000000000000 Call Trace: msix_capability_init+0x317/0x3f0 __pci_enable_msix_range+0x21d/0x2c0 pci_alloc_irq_vectors_affinity+0xa9/0x130 nvme_setup_io_queues+0x2a8/0x420 [nvme] nvme_reset_work+0x151/0x340 [nvme] ... RDI=0 confirms iounmap() is called with NULL. Restore the original "goto out_disable" and leave the unmap to the existing __free(free_msi_irqs) cleanup.

References

NVD — CVE-2026-80620 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80620
git.kernel.org/stable/c/0a2aeb0289... WEB
https://git.kernel.org/stable/c/0a2aeb02894b839ecc3ece6dc7e5c3d6c3def16f
git.kernel.org/stable/c/3691a82be2... WEB
https://git.kernel.org/stable/c/3691a82be2095abaf3326a1cbf7b25858a1d959c
git.kernel.org/stable/c/6848ca381e... WEB
https://git.kernel.org/stable/c/6848ca381edff84f87dd1b6973848c271541e813
git.kernel.org/stable/c/82e120a7dd... WEB
https://git.kernel.org/stable/c/82e120a7dd566c476ba923d30e3fb78e8118a1dd
git.kernel.org/stable/c/f64e03da0d... WEB
https://git.kernel.org/stable/c/f64e03da0d83cb173743888bff4a7e61476a8fc2
git.kernel.org/stable/c/f79519f636... WEB
https://git.kernel.org/stable/c/f79519f636059b007d6abc91652f36dea4f54a20

Frequently Asked Questions

What is CVE-2026-80620?
CVE-2026-80620 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-2026-80620?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80620?
CVE-2026-80620 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80620?
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-wrw8-wwxf-qp7r",
  "modified" : "2026-08-28T09:31:47Z",
  "published" : "2026-08-28T09:31:47Z",
  "aliases" : [ "CVE-2026-80620" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"PCI/MSI: Unmap MSI-X region on error\"\n\nThis reverts commit 1a8d4c6ecb4c81261bcdf13556abd4a958eca202.\n\nCommit 1a8d4c6ecb4c (\"PCI/MSI: Unmap MSI-X region on error\") added an\niounmap(dev->msix_base) on the error path of msix_capability_init() to\nrelease the MSI-X region when msix_setup_interrupts() fails.\n\nWhen msix_setup_interrupts() fails, the call chain is:\n\n  msix_setup_interrupts()\n    -> __msix_setup_interrupts()\n         struct pci_dev *dev __free(free_msi_irqs) = __dev;\n         ...\n         return ret;  // __free cleanup fires on error\n\nThe __free(free_msi_irqs) cleanup calls pci_free_msi_irqs(), which\nalready handles the unmap:\n\n  void pci_free_msi_irqs(struct pci_dev *dev)\n  {\n      pci_msi_teardown_msi_irqs(dev);\n      if (dev->msix_base) {\n          iounmap(dev->msix_base);   // already unmapped here\n          dev->msix_base = NULL;     // and set to NULL\n      }\n  }\n\nSo dev->msix_base is unmapped and set to NULL before\nmsix_setup_interrupts() returns to msix_capability_init(). The\n\"goto out_unmap\" introduced by commit 1a8d4c6ecb4c (\"PCI/MSI: Unmap\nMSI-X region on error\") then calls iounmap() a second time on a NULL\npointer.\n\nThis was reproduced on Intel Emerald Rapids (192 CPUs) while\nrunning tools/testing/selftests/kexec/test_kexec_jump.sh:\n\n  WARNING: CPU#44 at iounmap+0x2a/0xe0\n  RIP: 0010:iounmap+0x2a/0xe0\n  RDI: 0000000000000000\n  Call Trace:\n   msix_capability_init+0x317/0x3f0\n   __pci_enable_msix_range+0x21d/0x2c0\n   pci_alloc_irq_vectors_affinity+0xa9/0x130\n   nvme_setup_io_queues+0x2a8/0x420 [nvme]\n   nvme_reset_work+0x151/0x340 [nvme]\n   ...\n\nRDI=0 confirms iounmap() is called with NULL.\n\nRestore the original \"goto out_disable\" and leave the unmap to the\nexisting __free(free_msi_irqs) cleanup.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80620"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0a2aeb02894b839ecc3ece6dc7e5c3d6c3def16f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3691a82be2095abaf3326a1cbf7b25858a1d959c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6848ca381edff84f87dd1b6973848c271541e813"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/82e120a7dd566c476ba923d30e3fb78e8118a1dd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f64e03da0d83cb173743888bff4a7e61476a8fc2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f79519f636059b007d6abc91652f36dea4f54a20"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-28T08:16:46Z"
  }
}