CVE-2026-80807: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-h6ww-mgj9-p3pf
Share
Published
Advisory Summary

CVE-2026-80807 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-2026-80807 at a Glance

CVE Identifier CVE-2026-80807
GHSA Identifier GHSA-h6ww-mgj9-p3pf
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-2026-80807

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-2026-80807, 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: nilfs2: reject invalid block index in GC ioctl Syzbot reported list corruption caused by a double list_add_tail() call on bh->b_assoc_buffers within nilfs_lookup_dirty_data_buffers(). Analysis revealed that the root cause was the insertion of a page/folio with a page index of ULONG_MAX into the page cache via the GC ioctl. filemap_get_folios_tag(), called by nilfs_lookup_dirty_data_buffers(), repeatedly detects a dirty folio with a page index of ULONG_MAX due to index wrap-around, leading to duplicate processing of dirty buffers. As a preparatory step, the GC ioctl loads the page/folio of the block to be moved during GC and inserts it into the page cache based on information in the nilfs_vdesc structure passed as an argument. Normally, this does not cause issues because the user-space GC library configures the nilfs_vdesc structure properly. However, since there is no range check on the parameters determining the page index, a request with artificially crafted parameters -- such as those generated by Syzbot -- can result in a page/folio being inserted with a page index of ULONG_MAX, triggering the above problem. This resolves the issue by checking the ranges of 'vd_offset' and 'vd_vblocknr' in the nilfs_vdesc structure that determine the page index, thereby preventing the invalid page/folio insertions.

References

NVD — CVE-2026-80807 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80807
git.kernel.org/stable/c/3bd064ccc7... WEB
https://git.kernel.org/stable/c/3bd064ccc70b85f9a3d53aece29dc8473be5a226
git.kernel.org/stable/c/68aa9ab6f8... WEB
https://git.kernel.org/stable/c/68aa9ab6f8f2895713aa6ddf781463ed8ea5ba44
git.kernel.org/stable/c/898404cdf8... WEB
https://git.kernel.org/stable/c/898404cdf882d7b54f1132f75570984ca3214796
git.kernel.org/stable/c/a1735eae55... WEB
https://git.kernel.org/stable/c/a1735eae55448bc79c2da6593455791e886f6ed8
git.kernel.org/stable/c/a5e776e293... WEB
https://git.kernel.org/stable/c/a5e776e2937581d67ec5b9b4d27b0f70d7baa6b1
git.kernel.org/stable/c/ba8a8b563a... WEB
https://git.kernel.org/stable/c/ba8a8b563a28d358c45c62a306d421434a058648
git.kernel.org/stable/c/e447f7edb9... WEB
https://git.kernel.org/stable/c/e447f7edb99bd00cec63d6f3049e2e5074946f71
git.kernel.org/stable/c/ec6ddf271d... WEB
https://git.kernel.org/stable/c/ec6ddf271dfa4c7e3147bc2c8b2bad4315f316a1
git.kernel.org/stable/c/fbcfb75c20... WEB
https://git.kernel.org/stable/c/fbcfb75c20d71a5b542ad4ac3b79d10b997c8152

Frequently Asked Questions

What is CVE-2026-80807?
CVE-2026-80807 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-2026-80807?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80807?
CVE-2026-80807 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80807?
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-h6ww-mgj9-p3pf",
  "modified" : "2026-09-04T18:31:27Z",
  "published" : "2026-09-04T18:31:27Z",
  "aliases" : [ "CVE-2026-80807" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: reject invalid block index in GC ioctl\n\nSyzbot reported list corruption caused by a double list_add_tail() call on\nbh->b_assoc_buffers within nilfs_lookup_dirty_data_buffers().\n\nAnalysis revealed that the root cause was the insertion of a page/folio\nwith a page index of ULONG_MAX into the page cache via the GC ioctl.\nfilemap_get_folios_tag(), called by nilfs_lookup_dirty_data_buffers(),\nrepeatedly detects a dirty folio with a page index of ULONG_MAX due to\nindex wrap-around, leading to duplicate processing of dirty buffers.\n\nAs a preparatory step, the GC ioctl loads the page/folio of the block to\nbe moved during GC and inserts it into the page cache based on information\nin the nilfs_vdesc structure passed as an argument.  Normally, this does\nnot cause issues because the user-space GC library configures the\nnilfs_vdesc structure properly.  However, since there is no range check on\nthe parameters determining the page index, a request with artificially\ncrafted parameters -- such as those generated by Syzbot -- can result in a\npage/folio being inserted with a page index of ULONG_MAX, triggering the\nabove problem.\n\nThis resolves the issue by checking the ranges of 'vd_offset' and\n'vd_vblocknr' in the nilfs_vdesc structure that determine the page index,\nthereby preventing the invalid page/folio insertions.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80807"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3bd064ccc70b85f9a3d53aece29dc8473be5a226"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/68aa9ab6f8f2895713aa6ddf781463ed8ea5ba44"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/898404cdf882d7b54f1132f75570984ca3214796"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a1735eae55448bc79c2da6593455791e886f6ed8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a5e776e2937581d67ec5b9b4d27b0f70d7baa6b1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ba8a8b563a28d358c45c62a306d421434a058648"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e447f7edb99bd00cec63d6f3049e2e5074946f71"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ec6ddf271dfa4c7e3147bc2c8b2bad4315f316a1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fbcfb75c20d71a5b542ad4ac3b79d10b997c8152"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-04T16:18:07Z"
  }
}