CVE-2026-80671: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-98vx-8r93-84hf
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CVSS 9.3
Published
Advisory Summary

CVE-2026-80671 is a CRITICAL (CVSS 9.3) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-80671 at a Glance

CVE Identifier CVE-2026-80671
GHSA Identifier GHSA-98vx-8r93-84hf
Severity CRITICAL
CVSS v3.1 Base Score 9.3
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-80671

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-2026-80671, 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: perf sched: Fix register_pid() overflow, strcpy, and BUG_ON register_pid() has several issues when processing untrusted perf.data: 1. Integer overflow: (pid + 1) * sizeof(struct task_desc *) can wrap to a small value on 32-bit systems when pid is large (e.g. 0x40000000), causing realloc to return a tiny buffer followed by out-of-bounds writes in the initialization loop. 2. Heap buffer overflow: strcpy(task->comm, comm) copies the untrusted comm string into a fixed 20-byte COMM_LEN buffer with no length check. 3. BUG_ON on allocation failure: perf.data is untrusted input, so allocation failures should be handled gracefully rather than killing the process. 4. Realloc of sched->tasks assigned directly back, leaking the old pointer on failure; nr_tasks incremented before the realloc, leaving corrupted state on failure. Cap pid at PID_MAX_LIMIT (4194304, matching the kernel's maximum on 64-bit), replace strcpy with strlcpy, guard against NULL comm, replace BUG_ON with NULL returns using safe realloc patterns, and add NULL checks in callers that dereference the result.

References

NVD — CVE-2026-80671 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80671
git.kernel.org/stable/c/2003918e13... WEB
https://git.kernel.org/stable/c/2003918e13f43cf6c5698be3cc9aa3657dd676a8
git.kernel.org/stable/c/22263d241b... WEB
https://git.kernel.org/stable/c/22263d241bad753217d545f8085b7ead52e2873b
git.kernel.org/stable/c/261d2b5f4a... WEB
https://git.kernel.org/stable/c/261d2b5f4afa0570ca906e553c93811c5abe4590
git.kernel.org/stable/c/29639f00bf... WEB
https://git.kernel.org/stable/c/29639f00bfa49da7904ba0a499e0da7a0e5d735e
git.kernel.org/stable/c/344e59fc4f... WEB
https://git.kernel.org/stable/c/344e59fc4f2cba6dc04ce5e2a77388645d4ca834
git.kernel.org/stable/c/5949d339f5... WEB
https://git.kernel.org/stable/c/5949d339f5ec98752d56dcd4e36f619a59d513a5
git.kernel.org/stable/c/5ea1dcc941... WEB
https://git.kernel.org/stable/c/5ea1dcc9418c4e06ce29ed5170596f497ba86872
git.kernel.org/stable/c/652cea73b7... WEB
https://git.kernel.org/stable/c/652cea73b7b7b7c622a2be670e44e3c499c6d49f

Frequently Asked Questions

What is CVE-2026-80671?
CVE-2026-80671 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-2026-80671?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-80671?
CVE-2026-80671 has a CVSS v3.1 base score of 9.3 (CRITICAL) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2026-80671?
CVE-2026-80671 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80671?
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-98vx-8r93-84hf",
  "modified" : "2026-09-14T15:32:13Z",
  "published" : "2026-08-28T09:31:48Z",
  "aliases" : [ "CVE-2026-80671" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nperf sched: Fix register_pid() overflow, strcpy, and BUG_ON\n\nregister_pid() has several issues when processing untrusted perf.data:\n\n1. Integer overflow: (pid + 1) * sizeof(struct task_desc *) can wrap\n   to a small value on 32-bit systems when pid is large (e.g.\n   0x40000000), causing realloc to return a tiny buffer followed by\n   out-of-bounds writes in the initialization loop.\n\n2. Heap buffer overflow: strcpy(task->comm, comm) copies the\n   untrusted comm string into a fixed 20-byte COMM_LEN buffer with\n   no length check.\n\n3. BUG_ON on allocation failure: perf.data is untrusted input, so\n   allocation failures should be handled gracefully rather than\n   killing the process.\n\n4. Realloc of sched->tasks assigned directly back, leaking the old\n   pointer on failure; nr_tasks incremented before the realloc,\n   leaving corrupted state on failure.\n\nCap pid at PID_MAX_LIMIT (4194304, matching the kernel's maximum\non 64-bit), replace strcpy with strlcpy, guard against NULL comm,\nreplace BUG_ON with NULL returns using safe realloc patterns, and\nadd NULL checks in callers that dereference the result.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80671"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2003918e13f43cf6c5698be3cc9aa3657dd676a8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/22263d241bad753217d545f8085b7ead52e2873b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/261d2b5f4afa0570ca906e553c93811c5abe4590"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/29639f00bfa49da7904ba0a499e0da7a0e5d735e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/344e59fc4f2cba6dc04ce5e2a77388645d4ca834"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5949d339f5ec98752d56dcd4e36f619a59d513a5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5ea1dcc9418c4e06ce29ed5170596f497ba86872"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/652cea73b7b7b7c622a2be670e44e3c499c6d49f"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-28T08:16:52Z"
  }
}