CVE-2026-80792: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-4jhv-hqg8-9j35
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Advisory Summary

CVE-2026-80792 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-2026-80792 at a Glance

CVE Identifier CVE-2026-80792
GHSA Identifier GHSA-4jhv-hqg8-9j35
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-2026-80792

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-2026-80792, 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: ipv6: fix use-after-free in ip6_finish_output2() ip6_finish_output2() caches a pointer to the IPv6 destination address (daddr) before invoking lwtunnel_xmit(). The LWT-BPF transmit path or other encapsulation operations within lwtunnel_xmit() can reallocate the skb head, freeing the memory that daddr points to. When lwtunnel_xmit() returns LWTUNNEL_XMIT_CONTINUE, the function continues to use the stale daddr pointer to compute the nexthop and to look up or create the neighbour entry. This results in a use-after-free read, which can leak sensitive kernel data, pollute the neighbour table with arbitrary values, misdirect traffic, or crash the system. Fix this by re-fetching the IPv6 header and the destination address pointer after lwtunnel_xmit() returns LWTUNNEL_XMIT_CONTINUE, ensuring that the subsequent nexthop computation and neighbour lookup operate on valid memory.

References

NVD — CVE-2026-80792 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80792
git.kernel.org/stable/c/087ee0d914... WEB
https://git.kernel.org/stable/c/087ee0d914aaae929f1660c9ca878e367655ba1a
git.kernel.org/stable/c/3c770ac4e6... WEB
https://git.kernel.org/stable/c/3c770ac4e6f07af7c7b40c474a3efc61ffed7862
git.kernel.org/stable/c/3dc98e5fe8... WEB
https://git.kernel.org/stable/c/3dc98e5fe82d069dd29b124ffbdb679331dfea43
git.kernel.org/stable/c/73a187384a... WEB
https://git.kernel.org/stable/c/73a187384a8c8b983c7fea046d716b6752a1e7a3
git.kernel.org/stable/c/75e0a544eb... WEB
https://git.kernel.org/stable/c/75e0a544ebe9af663ef53ca21e9e9185c51fb54a
git.kernel.org/stable/c/99219c8280... WEB
https://git.kernel.org/stable/c/99219c82804f266189388e8bf1cf5135d10d5515
git.kernel.org/stable/c/c95f01b782... WEB
https://git.kernel.org/stable/c/c95f01b78266828a57060d754fcbfc92123a98ed
git.kernel.org/stable/c/d0d48d999b... WEB
https://git.kernel.org/stable/c/d0d48d999b0eee6bb176ef4e39d9be868fa80f7e
git.kernel.org/stable/c/d960881b93... WEB
https://git.kernel.org/stable/c/d960881b9312e781a3429aabceb223ce6b7c882f

Frequently Asked Questions

What is CVE-2026-80792?
CVE-2026-80792 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-2026-80792?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80792?
CVE-2026-80792 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80792?
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 
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  "id" : "GHSA-4jhv-hqg8-9j35",
  "modified" : "2026-09-04T18:31:26Z",
  "published" : "2026-09-04T18:31:26Z",
  "aliases" : [ "CVE-2026-80792" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: fix use-after-free in ip6_finish_output2()\n\nip6_finish_output2() caches a pointer to the IPv6 destination\naddress (daddr) before invoking lwtunnel_xmit().  The LWT-BPF\ntransmit path or other encapsulation operations within\nlwtunnel_xmit() can reallocate the skb head, freeing the memory\nthat daddr points to.  When lwtunnel_xmit() returns\nLWTUNNEL_XMIT_CONTINUE, the function continues to use the stale\ndaddr pointer to compute the nexthop and to look up or create the\nneighbour entry.  This results in a use-after-free read, which can\nleak sensitive kernel data, pollute the neighbour table with\narbitrary values, misdirect traffic, or crash the system.\n\nFix this by re-fetching the IPv6 header and the destination\naddress pointer after lwtunnel_xmit() returns\nLWTUNNEL_XMIT_CONTINUE, ensuring that the subsequent nexthop\ncomputation and neighbour lookup operate on valid memory.",
  "severity" : [ ],
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  "database_specific" : {
    "cwe_ids" : [ ],
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    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-04T16:18:05Z"
  }
}