CVE-2026-90078: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-4hxp-vhhr-h77f
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Advisory Summary

CVE-2026-90078 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-2026-90078 at a Glance

CVE Identifier CVE-2026-90078
GHSA Identifier GHSA-4hxp-vhhr-h77f
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-2026-90078

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-2026-90078, 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: net/sched: act_skbmod: fix length calculations and avoid invalid header warnings syzbot reported a warning in skb_network_header_len() triggered by tcf_skbmod_act(): !skb_transport_header_was_set(skb) WARNING: CPU: 0 PID: 14949 at include/linux/skbuff.h:3243 skb_network_header_len include/linux/skbuff.h:3243 [inline] WARNING: CPU: 0 PID: 14949 at net/sched/act_skbmod.c:55 tcf_skbmod_act+0xfe8/0x1810 net/sched/act_skbmod.c:55 There are a few issues in tcf_skbmod_act(): 1. Calling skb_network_header_len() assumes skb->transport_header is set, which is not guaranteed when tcf_skbmod_act() runs at TC ingress. 2. Unconditionally calling skb_mac_header_len() at the beginning of tcf_skbmod_act() triggers a warning on L3 devices (e.g. TUN) where the MAC header is unset, evaluating to an underflowed garbage length. 3. On TC ingress, skb->data points to the network header. Adding the MAC header length to the IP header length causes skb_ensure_writable() to request more bytes than the actual IP packet length, dropping valid short packets (e.g. 28-byte UDP/IPv4 packets). Fix these by: - Using skb_network_offset(skb) + sizeof(struct iphdr/ipv6hdr) for SKBMOD_F_ECN so that the required length is correctly calculated on both ingress (offset == 0) and egress (offset == mac_len). - Setting max_edit_len to ETH_HLEN for Ethernet header modifications after validating ARPHRD_ETHER.

References

NVD — CVE-2026-90078 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90078
git.kernel.org/stable/c/0675cff3c2... WEB
https://git.kernel.org/stable/c/0675cff3c2924eb9b80d9dd250cf56a1140af157
git.kernel.org/stable/c/1719865b20... WEB
https://git.kernel.org/stable/c/1719865b20b22c88d2a55e922eff5ca31b0841f6
git.kernel.org/stable/c/62126464f3... WEB
https://git.kernel.org/stable/c/62126464f3a6159c0a3dd89e196ba65bfeb0afc6
git.kernel.org/stable/c/81d0d1e64f... WEB
https://git.kernel.org/stable/c/81d0d1e64f30d9989c829c0953cd6e6c68d9c5fb
git.kernel.org/stable/c/985a37781a... WEB
https://git.kernel.org/stable/c/985a37781ade19061400100c2ba0f43979dd4d63
git.kernel.org/stable/c/d896843d8d... WEB
https://git.kernel.org/stable/c/d896843d8d925f0adbba319020595cfb1a7bcd57
git.kernel.org/stable/c/e8a2027b7e... WEB
https://git.kernel.org/stable/c/e8a2027b7e686784a69b2dfcee841d779919f313

Frequently Asked Questions

What is CVE-2026-90078?
CVE-2026-90078 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-2026-90078?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-90078?
CVE-2026-90078 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-90078?
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-4hxp-vhhr-h77f",
  "modified" : "2026-09-17T18:31:50Z",
  "published" : "2026-09-17T18:31:50Z",
  "aliases" : [ "CVE-2026-90078" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_skbmod: fix length calculations and avoid invalid header warnings\n\nsyzbot reported a warning in skb_network_header_len() triggered\nby tcf_skbmod_act():\n\n  !skb_transport_header_was_set(skb)\n  WARNING: CPU: 0 PID: 14949 at include/linux/skbuff.h:3243 skb_network_header_len include/linux/skbuff.h:3243 [inline]\n  WARNING: CPU: 0 PID: 14949 at net/sched/act_skbmod.c:55 tcf_skbmod_act+0xfe8/0x1810 net/sched/act_skbmod.c:55\n\nThere are a few issues in tcf_skbmod_act():\n\n1. Calling skb_network_header_len() assumes skb->transport_header is set,\n   which is not guaranteed when tcf_skbmod_act() runs at TC ingress.\n2. Unconditionally calling skb_mac_header_len() at the beginning of\n   tcf_skbmod_act() triggers a warning on L3 devices (e.g. TUN) where the\n   MAC header is unset, evaluating to an underflowed garbage length.\n3. On TC ingress, skb->data points to the network header. Adding the MAC\n   header length to the IP header length causes skb_ensure_writable() to\n   request more bytes than the actual IP packet length, dropping valid\n   short packets (e.g. 28-byte UDP/IPv4 packets).\n\nFix these by:\n- Using skb_network_offset(skb) + sizeof(struct iphdr/ipv6hdr) for\n  SKBMOD_F_ECN so that the required length is correctly calculated on\n  both ingress (offset == 0) and egress (offset == mac_len).\n- Setting max_edit_len to ETH_HLEN for Ethernet header modifications\n  after validating ARPHRD_ETHER.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-90078"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0675cff3c2924eb9b80d9dd250cf56a1140af157"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1719865b20b22c88d2a55e922eff5ca31b0841f6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/62126464f3a6159c0a3dd89e196ba65bfeb0afc6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/81d0d1e64f30d9989c829c0953cd6e6c68d9c5fb"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/985a37781ade19061400100c2ba0f43979dd4d63"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d896843d8d925f0adbba319020595cfb1a7bcd57"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e8a2027b7e686784a69b2dfcee841d779919f313"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:16:57Z"
  }
}