CVE-2026-80556: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-4ppc-mf9q-3j92
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CVSS 7.8
Published
Advisory Summary

CVE-2026-80556 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-2026-80556 at a Glance

CVE Identifier CVE-2026-80556
GHSA Identifier GHSA-4ppc-mf9q-3j92
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-2026-80556

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-2026-80556, 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: mmc: atmel-mci: Fix use-after-free in atmci_remove due to race condition In atmci_probe, &host->bh_work is bound with atmci_work_func, and atmci_interrupt, atmci_timeout_timer and atmci_dma_complete can all queue this work on system_bh_wq. If we remove the module, atmci_remove makes cleanup and the memory allocated for host with devm_kzalloc() is released after the remove callback returns, while the work mentioned above may still be pending or running. The sequence of operations that may lead to a UAF bug is as follows: CPU0 CPU1 | atmci_interrupt | queue_work(system_bh_wq, | &host->bh_work) atmci_remove | atmci_cleanup_slot(...) | atmci_writel(host, ATMCI_IDR, ~0UL) | timer_delete_sync(&host->timer) | dma_release_channel(host->dma.chan) | free_irq(platform_get_irq(pdev, 0), host) | | atmci_work_func | // use host // devm resources released after | // remove returns, host is freed | | // use host (use-after-free) Fix it by canceling the work after all the sources that can schedule it (IRQ handler, timeout timer and DMA completion callback) have been stopped, and before proceeding with the remaining cleanup in atmci_remove.

References

NVD — CVE-2026-80556 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80556
git.kernel.org/stable/c/22aecf6c47... WEB
https://git.kernel.org/stable/c/22aecf6c4721727a2f724ca0438bc7d4b609bf3f
git.kernel.org/stable/c/7599a73ff6... WEB
https://git.kernel.org/stable/c/7599a73ff66d195a908f5d88b427933a9fb1c02a
git.kernel.org/stable/c/b5060ff2f5... WEB
https://git.kernel.org/stable/c/b5060ff2f5460795a3e9f7cdf5052aa42f96ff81
git.kernel.org/stable/c/c125ee35a4... WEB
https://git.kernel.org/stable/c/c125ee35a49a0518521b52b27631eef061b8719a

Frequently Asked Questions

What is CVE-2026-80556?
CVE-2026-80556 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-2026-80556?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-80556?
CVE-2026-80556 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-2026-80556?
CVE-2026-80556 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80556?
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-4ppc-mf9q-3j92",
  "modified" : "2026-08-27T06:31:32Z",
  "published" : "2026-08-27T06:31:32Z",
  "aliases" : [ "CVE-2026-80556" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: atmel-mci: Fix use-after-free in atmci_remove due to race condition\n\nIn atmci_probe, &host->bh_work is bound with atmci_work_func, and\natmci_interrupt, atmci_timeout_timer and atmci_dma_complete can all\nqueue this work on system_bh_wq.\n\nIf we remove the module, atmci_remove makes cleanup and the memory\nallocated for host with devm_kzalloc() is released after the remove\ncallback returns, while the work mentioned above may still be pending\nor running. The sequence of operations that may lead to a UAF bug is\nas follows:\n\nCPU0                                      CPU1\n\n                                          | atmci_interrupt\n                                          | queue_work(system_bh_wq,\n                                          |            &host->bh_work)\natmci_remove                              |\natmci_cleanup_slot(...)                   |\natmci_writel(host, ATMCI_IDR, ~0UL)       |\ntimer_delete_sync(&host->timer)           |\ndma_release_channel(host->dma.chan)       |\nfree_irq(platform_get_irq(pdev, 0), host) |\n                                          | atmci_work_func\n                                          | // use host\n// devm resources released after          |\n// remove returns, host is freed          |\n                                          | // use host (use-after-free)\n\nFix it by canceling the work after all the sources that can schedule\nit (IRQ handler, timeout timer and DMA completion callback) have been\nstopped, and before proceeding with the remaining cleanup in\natmci_remove.",
  "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-2026-80556"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/22aecf6c4721727a2f724ca0438bc7d4b609bf3f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7599a73ff66d195a908f5d88b427933a9fb1c02a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b5060ff2f5460795a3e9f7cdf5052aa42f96ff81"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c125ee35a49a0518521b52b27631eef061b8719a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-26T15:17:10Z"
  }
}