CVE-2026-80793: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-vc8f-29mh-24xv
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Advisory Summary

CVE-2026-80793 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-2026-80793 at a Glance

CVE Identifier CVE-2026-80793
GHSA Identifier GHSA-vc8f-29mh-24xv
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-2026-80793

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-2026-80793, 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: ipv4: reject undersized MTUs in ip_do_fragment() ip_do_fragment() subtracts the IPv4 header length from the effective MTU and passes the resulting payload MTU to ip_frag_next(). If the effective MTU is smaller than hlen + 8, ip_frag_next() rounds the fragment payload length down to zero. The fragmentation state then never makes forward progress: state->left, state->ptr and state->offset stay unchanged while ip_do_fragment() keeps allocating and transmitting header-only fragments until the softlockup detector fires. This is reproducible with a route installed using "mtu lock 20", but it is also reproducible without route MTU lock, for example by forwarding a packet to a device whose MTU is 20. Fix it in ip_do_fragment() by rejecting mtu < hlen + 8 with -EMSGSIZE, matching the existing IPv6 fragmentation check.

References

NVD — CVE-2026-80793 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80793
git.kernel.org/stable/c/3556beb8ca... WEB
https://git.kernel.org/stable/c/3556beb8ca86677af2aca5bfbed6f8e790fccc83
git.kernel.org/stable/c/36e0741833... WEB
https://git.kernel.org/stable/c/36e0741833bd823866f8cb9f112f37cea1a70b60
git.kernel.org/stable/c/515b6816ba... WEB
https://git.kernel.org/stable/c/515b6816ba0c12d8415c88e5f41e6ec029e35cfa
git.kernel.org/stable/c/74ce7389f8... WEB
https://git.kernel.org/stable/c/74ce7389f8f562d39015f59a00ef7ad6acd37803
git.kernel.org/stable/c/a716a64a4b... WEB
https://git.kernel.org/stable/c/a716a64a4ba68cd46f2745fba2b1099fe8e0aa59
git.kernel.org/stable/c/b0ea911453... WEB
https://git.kernel.org/stable/c/b0ea911453ce7210e8200a07a94d2458bd1e6430
git.kernel.org/stable/c/c0726f0caf... WEB
https://git.kernel.org/stable/c/c0726f0caf8c6b3208552949e17d23634a2f3129
git.kernel.org/stable/c/c8a74adcca... WEB
https://git.kernel.org/stable/c/c8a74adccaf028223054633b532593101dfcc581
git.kernel.org/stable/c/d9d1a676b0... WEB
https://git.kernel.org/stable/c/d9d1a676b033acabf8e5645f730486d1f8204a3f

Frequently Asked Questions

What is CVE-2026-80793?
CVE-2026-80793 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-2026-80793?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80793?
CVE-2026-80793 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80793?
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-vc8f-29mh-24xv",
  "modified" : "2026-09-04T18:31:26Z",
  "published" : "2026-09-04T18:31:26Z",
  "aliases" : [ "CVE-2026-80793" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: reject undersized MTUs in ip_do_fragment()\n\nip_do_fragment() subtracts the IPv4 header length from the effective\nMTU and passes the resulting payload MTU to ip_frag_next().\n\nIf the effective MTU is smaller than hlen + 8, ip_frag_next() rounds\nthe fragment payload length down to zero. The fragmentation state then\nnever makes forward progress: state->left, state->ptr and state->offset\nstay unchanged while ip_do_fragment() keeps allocating and transmitting\nheader-only fragments until the softlockup detector fires.\n\nThis is reproducible with a route installed using \"mtu lock 20\", but it\nis also reproducible without route MTU lock, for example by forwarding a\npacket to a device whose MTU is 20.\n\nFix it in ip_do_fragment() by rejecting mtu < hlen + 8 with -EMSGSIZE,\nmatching the existing IPv6 fragmentation check.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
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  "database_specific" : {
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