CVE-2026-81002: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-w4xj-mpx6-w45f
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CVSS 9.8
Published
Advisory Summary

CVE-2026-81002 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-81002 at a Glance

CVE Identifier CVE-2026-81002
GHSA Identifier GHSA-w4xj-mpx6-w45f
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2026-81002

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-2026-81002, 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: xdp: fix zero-copy frame layout xdp_convert_zc_to_xdp_frame() clones an XSK packet into an order-0 page and advertises PAGE_SIZE as its frame size. It allows the copied frame to occupy the page tail needed by skb_shared_info and records zero headroom even when metadata separates the frame header from packet data. An AF_XDP zero-copy packet redirected through cpumap can therefore make the skb overlap skb_shared_info or place it beyond the allocated page. Limit the copied layout to SKB_WITH_OVERHEAD(PAGE_SIZE) and include the metadata length in frame headroom. Redirect callers already handle a NULL conversion result. BUG: KASAN: slab-out-of-bounds in skb_gro_receive Write of size 4 at addr ffff88800cf37004 by task cpumap/1/map:1/146 Call Trace: skb_gro_receive (net/core/gro.c:174) udp_gro_receive (net/ipv4/udp_offload.c:812) inet_gro_receive (net/ipv4/af_inet.c:1539) dev_gro_receive (net/core/gro.c:515) gro_receive_skb (net/core/gro.c:633) cpu_map_kthread_run (kernel/bpf/cpumap.c:395) kthread (kernel/kthread.c:436) ret_from_fork (arch/x86/kernel/process.c:164) ret_from_fork_asm (arch/x86/entry/entry_64.S:255) Kernel panic - not syncing: KASAN: panic_on_warn set ...

References

NVD — CVE-2026-81002 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-81002
git.kernel.org/stable/c/15d1f3c0db... WEB
https://git.kernel.org/stable/c/15d1f3c0dbe7a740f779337deb39f23cd8d002c8
git.kernel.org/stable/c/2209273012... WEB
https://git.kernel.org/stable/c/22092730129077c302d8c947bbe0876f0280c528
git.kernel.org/stable/c/444216dacd... WEB
https://git.kernel.org/stable/c/444216dacdbebd3e52d5e704facafbb230da09e9
git.kernel.org/stable/c/68d7cc5512... WEB
https://git.kernel.org/stable/c/68d7cc5512238693670fc19c7a615df631e10edf
git.kernel.org/stable/c/6de17275b3... WEB
https://git.kernel.org/stable/c/6de17275b3ccdf9887568b07e54da2e3597217cf
git.kernel.org/stable/c/71283aaa6c... WEB
https://git.kernel.org/stable/c/71283aaa6c65b3cec84caf1dc78560985737641f
git.kernel.org/stable/c/ced3e18cd9... WEB
https://git.kernel.org/stable/c/ced3e18cd9b9caf630aaa1e1eac305f5192ba896
git.kernel.org/stable/c/dcb6db9ca6... WEB
https://git.kernel.org/stable/c/dcb6db9ca6515fcd3e00c93ec5e27dc7a0a7012f

Frequently Asked Questions

What is CVE-2026-81002?
CVE-2026-81002 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-2026-81002?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-81002?
CVE-2026-81002 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-81002?
CVE-2026-81002 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-81002?
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-w4xj-mpx6-w45f",
  "modified" : "2026-09-14T15:32:23Z",
  "published" : "2026-09-11T21:31:24Z",
  "aliases" : [ "CVE-2026-81002" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nxdp: fix zero-copy frame layout\n\nxdp_convert_zc_to_xdp_frame() clones an XSK packet into an order-0 page\nand advertises PAGE_SIZE as its frame size.  It allows the copied frame\nto occupy the page tail needed by skb_shared_info and records zero\nheadroom even when metadata separates the frame header from packet data.\nAn AF_XDP zero-copy packet redirected through cpumap can therefore make\nthe skb overlap skb_shared_info or place it beyond the allocated page.\n\nLimit the copied layout to SKB_WITH_OVERHEAD(PAGE_SIZE) and include the\nmetadata length in frame headroom.  Redirect callers already handle a\nNULL conversion result.\n\nBUG: KASAN: slab-out-of-bounds in skb_gro_receive\nWrite of size 4 at addr ffff88800cf37004 by task cpumap/1/map:1/146\nCall Trace:\n skb_gro_receive (net/core/gro.c:174)\n udp_gro_receive (net/ipv4/udp_offload.c:812)\n inet_gro_receive (net/ipv4/af_inet.c:1539)\n dev_gro_receive (net/core/gro.c:515)\n gro_receive_skb (net/core/gro.c:633)\n cpu_map_kthread_run (kernel/bpf/cpumap.c:395)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:164)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:255)\nKernel panic - not syncing: KASAN: panic_on_warn set ...",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-81002"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/15d1f3c0dbe7a740f779337deb39f23cd8d002c8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/22092730129077c302d8c947bbe0876f0280c528"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/444216dacdbebd3e52d5e704facafbb230da09e9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/68d7cc5512238693670fc19c7a615df631e10edf"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6de17275b3ccdf9887568b07e54da2e3597217cf"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/71283aaa6c65b3cec84caf1dc78560985737641f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ced3e18cd9b9caf630aaa1e1eac305f5192ba896"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dcb6db9ca6515fcd3e00c93ec5e27dc7a0a7012f"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:08Z"
  }
}