CVE-2026-80844: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-jv4j-682x-84w7
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Advisory Summary

CVE-2026-80844 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-2026-80844 at a Glance

CVE Identifier CVE-2026-80844
GHSA Identifier GHSA-jv4j-682x-84w7
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-2026-80844

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-2026-80844, 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: xfrm: ah6: validate routing header segments_left AH6 rearranges routing-header addresses before computing or verifying the ICV. ipv6_rearrange_rthdr() assumes that segments_left is not larger than the number of addresses described by the routing header's hdrlen field. That assumption does not hold for raw IPv6 HDRINCL packets. A packet with hdrlen equal to 2 describes one address, but can carry an arbitrary segments_left value. With segments_left equal to 255, the function moves its address pointer 4,064 bytes backwards and passes a 4,064-byte length to memmove(), resulting in an out-of-bounds access. Validate the invariant locally before modifying the routing header or performing any address-pointer arithmetic, and propagate malformed-header errors to the existing AH6 input and output error paths.

References

NVD — CVE-2026-80844 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80844
git.kernel.org/stable/c/0bf11081ad... WEB
https://git.kernel.org/stable/c/0bf11081ad3753938a2b48723ce6298dbac743a1
git.kernel.org/stable/c/1516e31ac4... WEB
https://git.kernel.org/stable/c/1516e31ac458a738be485620579d8f7fb2700fcb
git.kernel.org/stable/c/1b7e066eab... WEB
https://git.kernel.org/stable/c/1b7e066eabcc7d6d8f476c34739b45932f2f4c31
git.kernel.org/stable/c/2dc650956e... WEB
https://git.kernel.org/stable/c/2dc650956e4e163b879b3fb1027f9557abc5c985
git.kernel.org/stable/c/46640c814f... WEB
https://git.kernel.org/stable/c/46640c814f25f096b0b0045ca50e1b7030cd8a30
git.kernel.org/stable/c/48b0e36cf5... WEB
https://git.kernel.org/stable/c/48b0e36cf54358276ee7aa897034c973097d2bc9
git.kernel.org/stable/c/6733ae7126... WEB
https://git.kernel.org/stable/c/6733ae71268a27d598cfb3f3339a3c950b9b656d
git.kernel.org/stable/c/7bad4bda74... WEB
https://git.kernel.org/stable/c/7bad4bda74dc4713f398d3b7624ff05478e3a568
git.kernel.org/stable/c/f00df8500e... WEB
https://git.kernel.org/stable/c/f00df8500e5a36ba70d336fd34bd2152ea074e5f

Frequently Asked Questions

What is CVE-2026-80844?
CVE-2026-80844 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-2026-80844?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80844?
CVE-2026-80844 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80844?
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-jv4j-682x-84w7",
  "modified" : "2026-09-04T18:31:29Z",
  "published" : "2026-09-04T18:31:28Z",
  "aliases" : [ "CVE-2026-80844" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: ah6: validate routing header segments_left\n\nAH6 rearranges routing-header addresses before computing or verifying the\nICV. ipv6_rearrange_rthdr() assumes that segments_left is not larger than\nthe number of addresses described by the routing header's hdrlen field.\n\nThat assumption does not hold for raw IPv6 HDRINCL packets. A packet with\nhdrlen equal to 2 describes one address, but can carry an arbitrary\nsegments_left value. With segments_left equal to 255, the function moves\nits address pointer 4,064 bytes backwards and passes a 4,064-byte length to\nmemmove(), resulting in an out-of-bounds access.\n\nValidate the invariant locally before modifying the routing header or\nperforming any address-pointer arithmetic, and propagate malformed-header\nerrors to the existing AH6 input and output error paths.",
  "severity" : [ ],
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