CVE-2026-80856: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-4jx3-fh7f-pxhw
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Advisory Summary

CVE-2026-80856 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-2026-80856 at a Glance

CVE Identifier CVE-2026-80856
GHSA Identifier GHSA-4jx3-fh7f-pxhw
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-2026-80856

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-2026-80856, 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: fuse: fix invalidate lock leak on setattr writeback failure fuse_do_setattr() takes filemap_invalidate_lock() for a DAX truncate (fault_blocked = true) and releases it at the out:/error: labels. But when a writeback flush is also needed, a write_inode_now() failure returns directly and leaks the lock, so any later fault or truncate on the file stalls on the stale rwsem. For example, truncate(2) on a setuid file reaches fuse_do_setattr() with both ATTR_SIZE and ATTR_MODE set: truncate(2) └─ do_truncate() ├─ dentry_needs_remove_privs() # S_ISUID └─ notify_change() # KILL_SUID -> ATTR_MODE └─ fuse_setattr() # no killpriv: │ # ia_valid |= ATTR_MODE └─ fuse_do_setattr() ├─ filemap_invalidate_lock() # IS_DAX && is_truncate └─ write_inode_now() # is_wb && ATTR_MODE └─ if (err) # e.g. daemon -> -EIO return err # <- lock leaked Fix this by adding an unlock label that releases the lock before returning the error, and use it for the fuse_dax_break_layouts() failure path as well.

References

NVD — CVE-2026-80856 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80856
git.kernel.org/stable/c/03cfeeb135... WEB
https://git.kernel.org/stable/c/03cfeeb135428fa83f0791d3f8f94d9298cae695
git.kernel.org/stable/c/1758730d9e... WEB
https://git.kernel.org/stable/c/1758730d9eaa3c06cf415c3446d9f6eed9ed3eed
git.kernel.org/stable/c/8f14906ce9... WEB
https://git.kernel.org/stable/c/8f14906ce9103ab8f2f1ebda45935a0d61b9d763
git.kernel.org/stable/c/92588d187b... WEB
https://git.kernel.org/stable/c/92588d187ba4697a322e7aefe5d9e538a87d1cd2
git.kernel.org/stable/c/9afeca0d56... WEB
https://git.kernel.org/stable/c/9afeca0d569c9fc89d758fe7a9339d1e8afb1546
git.kernel.org/stable/c/dd278d954c... WEB
https://git.kernel.org/stable/c/dd278d954c0e96a9cbd3cc491e07b8267d25f8d5
git.kernel.org/stable/c/e8457ebfd7... WEB
https://git.kernel.org/stable/c/e8457ebfd77a46e8d1210e8888ea914ad064558e
git.kernel.org/stable/c/ea9fea370b... WEB
https://git.kernel.org/stable/c/ea9fea370b8de4ffd72e0ef89550415c15637787

Frequently Asked Questions

What is CVE-2026-80856?
CVE-2026-80856 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-2026-80856?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80856?
CVE-2026-80856 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80856?
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-4jx3-fh7f-pxhw",
  "modified" : "2026-09-04T18:31:29Z",
  "published" : "2026-09-04T18:31:29Z",
  "aliases" : [ "CVE-2026-80856" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: fix invalidate lock leak on setattr writeback failure\n\nfuse_do_setattr() takes filemap_invalidate_lock() for a DAX truncate\n(fault_blocked = true) and releases it at the out:/error: labels.  But\nwhen a writeback flush is also needed, a write_inode_now() failure\nreturns directly and leaks the lock, so any later fault or truncate on\nthe file stalls on the stale rwsem.\n\nFor example, truncate(2) on a setuid file reaches fuse_do_setattr()\nwith both ATTR_SIZE and ATTR_MODE set:\n\n  truncate(2)\n  └─ do_truncate()\n     ├─ dentry_needs_remove_privs()         # S_ISUID\n     └─ notify_change()                     # KILL_SUID -> ATTR_MODE\n        └─ fuse_setattr()                   # no killpriv:\n           │                                #   ia_valid |= ATTR_MODE\n           └─ fuse_do_setattr()\n              ├─ filemap_invalidate_lock()  # IS_DAX && is_truncate\n              └─ write_inode_now()          # is_wb && ATTR_MODE\n                 └─ if (err)                # e.g. daemon -> -EIO\n                    return err              # <- lock leaked\n\nFix this by adding an unlock label that releases the lock before\nreturning the error, and use it for the fuse_dax_break_layouts()\nfailure path as well.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80856"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/03cfeeb135428fa83f0791d3f8f94d9298cae695"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1758730d9eaa3c06cf415c3446d9f6eed9ed3eed"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8f14906ce9103ab8f2f1ebda45935a0d61b9d763"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/92588d187ba4697a322e7aefe5d9e538a87d1cd2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9afeca0d569c9fc89d758fe7a9339d1e8afb1546"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dd278d954c0e96a9cbd3cc491e07b8267d25f8d5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e8457ebfd77a46e8d1210e8888ea914ad064558e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ea9fea370b8de4ffd72e0ef89550415c15637787"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-04T16:18:14Z"
  }
}