CVE-2026-89587: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-2qcc-62m3-pg4c
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CVSS 7.8
Published
Advisory Summary

CVE-2026-89587 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-2026-89587 at a Glance

CVE Identifier CVE-2026-89587
GHSA Identifier GHSA-2qcc-62m3-pg4c
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-2026-89587

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-2026-89587, 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: ACPI: pfr_update: fix stack buffer overflow in query_capability() query_capability() copies four ACPI buffer objects returned by the firmware _DSM into fixed-size u8[16] fields in struct pfru_update_cap_info using memcpy with the firmware-supplied length: memcpy(&cap_hdr->code_type, elements[CAP_CODE_TYPE_IDX].buffer.pointer, elements[CAP_CODE_TYPE_IDX].buffer.length); The same pattern repeats for drv_type, platform_id, and oem_id. If the firmware returns buffer.length > 16 for any of these fields, memcpy writes past the destination array. struct pfru_update_cap_info is stack-allocated in pfru_ioctl(). Confirmed with KASAN on 7.2-rc6: three stack-out-of-bounds reports are generated when a DSM returns 64-byte buffers, with writes reaching 44 bytes past the end of cap_hdr's [64, 156) frame window into adjacent stack redzones. Introduce a helper pointer to out_obj->package.elements and use it to validate each buffer length against its destination field size before copying, returning -EINVAL if the firmware supplies an oversized buffer.

References

NVD — CVE-2026-89587 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89587
git.kernel.org/stable/c/15d2b7f38f... WEB
https://git.kernel.org/stable/c/15d2b7f38f95d28652170344f39ee492c55e567c
git.kernel.org/stable/c/6d4ed2fd02... WEB
https://git.kernel.org/stable/c/6d4ed2fd022bc862b156e53aae163b61259e1caa
git.kernel.org/stable/c/a2151624b5... WEB
https://git.kernel.org/stable/c/a2151624b55029dad0ca7efd17fb83a0461c8843
git.kernel.org/stable/c/c5a31b4e7e... WEB
https://git.kernel.org/stable/c/c5a31b4e7e37c92550be9a2edf51ca853a4d251a
git.kernel.org/stable/c/ced45be007... WEB
https://git.kernel.org/stable/c/ced45be0073a8a31b30b4a7f68cd3a15734515de
git.kernel.org/stable/c/d3af83e327... WEB
https://git.kernel.org/stable/c/d3af83e327565a9444cebc0db714cb837e493046

Frequently Asked Questions

What is CVE-2026-89587?
CVE-2026-89587 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-2026-89587?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89587?
CVE-2026-89587 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-2026-89587?
CVE-2026-89587 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89587?
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-2qcc-62m3-pg4c",
  "modified" : "2026-09-14T15:32:30Z",
  "published" : "2026-09-11T21:31:33Z",
  "aliases" : [ "CVE-2026-89587" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: pfr_update: fix stack buffer overflow in query_capability()\n\nquery_capability() copies four ACPI buffer objects returned by the\nfirmware _DSM into fixed-size u8[16] fields in struct\npfru_update_cap_info using memcpy with the firmware-supplied length:\n\n  memcpy(&cap_hdr->code_type,\n         elements[CAP_CODE_TYPE_IDX].buffer.pointer,\n         elements[CAP_CODE_TYPE_IDX].buffer.length);\n\nThe same pattern repeats for drv_type, platform_id, and oem_id.\nIf the firmware returns buffer.length > 16 for any of these fields,\nmemcpy writes past the destination array.\n\nstruct pfru_update_cap_info is stack-allocated in pfru_ioctl().\n\nConfirmed with KASAN on 7.2-rc6: three stack-out-of-bounds reports\nare generated when a DSM returns 64-byte buffers, with writes reaching\n44 bytes past the end of cap_hdr's [64, 156) frame window into\nadjacent stack redzones.\n\nIntroduce a helper pointer to out_obj->package.elements and use it\nto validate each buffer length against its destination field size\nbefore copying, returning -EINVAL if the firmware supplies an\noversized buffer.",
  "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-2026-89587"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/15d2b7f38f95d28652170344f39ee492c55e567c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6d4ed2fd022bc862b156e53aae163b61259e1caa"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a2151624b55029dad0ca7efd17fb83a0461c8843"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c5a31b4e7e37c92550be9a2edf51ca853a4d251a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ced45be0073a8a31b30b4a7f68cd3a15734515de"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d3af83e327565a9444cebc0db714cb837e493046"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:43Z"
  }
}