CVE-2026-80876: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-f6hv-xhx3-9x64
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Advisory Summary

CVE-2026-80876 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-2026-80876 at a Glance

CVE Identifier CVE-2026-80876
GHSA Identifier GHSA-f6hv-xhx3-9x64
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-2026-80876

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-2026-80876, 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: ring-buffer: Fix event length with forced 8-byte alignment When RB_FORCE_8BYTE_ALIGNMENT is true, rb_calculate_event_length() reserves the space of event->array[0] for placing the data length and rb_update_event() stores the data length in event->array[0] accordingly. As a result the whole event length will add extra 4 bytes for sizeof(event.array[0]) unconditionally. But ring_buffer_event_length() only subtracts the sizeof(event->array[0]) for events larger than RB_MAX_SMALL_DATA + sizeof(event->array[0]). As a result, small events on architectures with RB_FORCE_8BYTE_ALIGNMENT=true report a data length that is 4 bytes larger than expected. To fix it, add the RB_FORCE_8BYTE_ALIGNMENT as a condition to subtract the size of that length field whenever RB_FORCE_8BYTE_ALIGNMENT is true. This issue is observed in a riscv64 kernel with CONFIG_HAVE_64BIT_ALIGNED_ACCESS set to y, when we run ftrace selftest trace_marker_raw.tc, we get the weird log: for cases where the id is 1..100, the number of data field is 8*N, but once id exceeds 100, the number of data field becomes 8*N+4: # 1 buf: 58 00 00 00 80 5e d1 63 (number of data field is 8*1) ... # a buf: 58 ... (number of data field is 8*2) ... # 64 buf: 58 ... (number of data field is 8*13) # 65 buf: 58 ... (number of data field is 8*13+4) After applying this change, the number of data field keeps being 8*N+4 consistently.

References

NVD — CVE-2026-80876 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80876
git.kernel.org/stable/c/14057268e7... WEB
https://git.kernel.org/stable/c/14057268e79654c3e8ea2c9b5204cb9644b2964d
git.kernel.org/stable/c/24c3fa71f9... WEB
https://git.kernel.org/stable/c/24c3fa71f9947b0e1f3b954db1b769b44140192e
git.kernel.org/stable/c/3a63a11897... WEB
https://git.kernel.org/stable/c/3a63a11897c7ba32d1be7a3fdbc48a8b01cf4992
git.kernel.org/stable/c/7c9f0ccf9f... WEB
https://git.kernel.org/stable/c/7c9f0ccf9f04142458d2ac3d39414f4acae242f0
git.kernel.org/stable/c/c37e0a4b79... WEB
https://git.kernel.org/stable/c/c37e0a4b79a6bbb96ce5ffe279d7c001e20529e0
git.kernel.org/stable/c/cfada73fab... WEB
https://git.kernel.org/stable/c/cfada73fabe2ccc06ec77fe2ceaa088689213326
git.kernel.org/stable/c/dbcb8635b1... WEB
https://git.kernel.org/stable/c/dbcb8635b1eb7603818591cf745c7b1d714f7ac6
git.kernel.org/stable/c/ec5e96aee7... WEB
https://git.kernel.org/stable/c/ec5e96aee75d27779b9a860307679f13f33adb0c

Frequently Asked Questions

What is CVE-2026-80876?
CVE-2026-80876 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-2026-80876?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80876?
CVE-2026-80876 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80876?
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-f6hv-xhx3-9x64",
  "modified" : "2026-09-04T18:31:32Z",
  "published" : "2026-09-04T18:31:31Z",
  "aliases" : [ "CVE-2026-80876" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Fix event length with forced 8-byte alignment\n\nWhen RB_FORCE_8BYTE_ALIGNMENT is true, rb_calculate_event_length()\nreserves the space of event->array[0] for placing the data length and\nrb_update_event() stores the data length in event->array[0]\naccordingly. As a result the whole event length will add extra 4 bytes\nfor sizeof(event.array[0]) unconditionally.\n\nBut ring_buffer_event_length() only subtracts the\nsizeof(event->array[0]) for events larger than RB_MAX_SMALL_DATA +\nsizeof(event->array[0]). As a result, small events on architectures\nwith RB_FORCE_8BYTE_ALIGNMENT=true report a data length that is 4\nbytes larger than expected.\n\nTo fix it, add the RB_FORCE_8BYTE_ALIGNMENT as a condition to subtract\nthe size of that length field whenever RB_FORCE_8BYTE_ALIGNMENT is\ntrue.\n\nThis issue is observed in a riscv64 kernel with\nCONFIG_HAVE_64BIT_ALIGNED_ACCESS set to y, when we run ftrace selftest\ntrace_marker_raw.tc, we get the weird log: for cases where the id is\n1..100, the number of data field is 8*N, but once id exceeds 100, the\nnumber of data field becomes 8*N+4:\n # 1 buf: 58 00 00 00 80 5e d1 63 (number of data field is 8*1)\n ...\n # a buf: 58 ...                  (number of data field is 8*2)\n ...\n # 64 buf: 58 ...                 (number of data field is 8*13)\n # 65 buf: 58 ...                 (number of data field is 8*13+4)\n\nAfter applying this change, the number of data field keeps being 8*N+4\nconsistently.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80876"
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    "url" : "https://git.kernel.org/stable/c/14057268e79654c3e8ea2c9b5204cb9644b2964d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/24c3fa71f9947b0e1f3b954db1b769b44140192e"
  }, {
    "type" : "WEB",
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  }, {
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    "url" : "https://git.kernel.org/stable/c/c37e0a4b79a6bbb96ce5ffe279d7c001e20529e0"
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    "url" : "https://git.kernel.org/stable/c/cfada73fabe2ccc06ec77fe2ceaa088689213326"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dbcb8635b1eb7603818591cf745c7b1d714f7ac6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ec5e96aee75d27779b9a860307679f13f33adb0c"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-04T17:16:59Z"
  }
}