CVE-2026-98555: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-q422-9435-7hfq
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Advisory Summary

CVE-2026-98555 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-2026-98555 at a Glance

CVE Identifier CVE-2026-98555
GHSA Identifier GHSA-q422-9435-7hfq
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-2026-98555

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-2026-98555, 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: llc: fix skb UAF and leaks on llc_mac_hdr_init() failure In llc_conn_ac_resend_i_xxx_x_set_0_or_send_rr(), if llc_mac_hdr_init() fails, kfree_skb(skb) is called instead of kfree_skb(nskb). This leaks the newly allocated nskb, reads from the freed skb via LLC_I_GET_NR(pdu), and double-frees skb when llc_conn_state_process() drops its reference. In llc_sap_action_send_xid_r() and llc_sap_action_send_test_r(), nskb is leaked if llc_mac_hdr_init() returns an error. Free nskb in all three error paths.

References

NVD — CVE-2026-98555 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98555
git.kernel.org/stable/c/060f827aa3... WEB
https://git.kernel.org/stable/c/060f827aa3dc47939ee306da715cd6700d129616
git.kernel.org/stable/c/41dcae82be... WEB
https://git.kernel.org/stable/c/41dcae82bece9f106b4dff0ee777bba8d157c8a8
git.kernel.org/stable/c/72f9dd522f... WEB
https://git.kernel.org/stable/c/72f9dd522f8d6c5a00be9695c7bb74631eb5069e
git.kernel.org/stable/c/8b855b6458... WEB
https://git.kernel.org/stable/c/8b855b645841b5a04e20339a22bb6d593c9b790d
git.kernel.org/stable/c/b859ba18b5... WEB
https://git.kernel.org/stable/c/b859ba18b5a1067f71db5618c6a4a70d55fa308b
git.kernel.org/stable/c/cb3528ad8b... WEB
https://git.kernel.org/stable/c/cb3528ad8bb46fa6252f5d14ced7febddc18515d
git.kernel.org/stable/c/d360b31f1a... WEB
https://git.kernel.org/stable/c/d360b31f1a3666579422872aa7d1a751e20b76f9
git.kernel.org/stable/c/fec0fe6838... WEB
https://git.kernel.org/stable/c/fec0fe6838a7f45175667701fb51abb23a6ffb1e

Frequently Asked Questions

What is CVE-2026-98555?
CVE-2026-98555 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-2026-98555?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98555?
CVE-2026-98555 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98555?
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-q422-9435-7hfq",
  "modified" : "2026-10-18T18:31:54Z",
  "published" : "2026-10-18T18:31:54Z",
  "aliases" : [ "CVE-2026-98555" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nllc: fix skb UAF and leaks on llc_mac_hdr_init() failure\n\nIn llc_conn_ac_resend_i_xxx_x_set_0_or_send_rr(), if llc_mac_hdr_init()\nfails, kfree_skb(skb) is called instead of kfree_skb(nskb). This leaks\nthe newly allocated nskb, reads from the freed skb via LLC_I_GET_NR(pdu),\nand double-frees skb when llc_conn_state_process() drops its reference.\n\nIn llc_sap_action_send_xid_r() and llc_sap_action_send_test_r(), nskb is\nleaked if llc_mac_hdr_init() returns an error.\n\nFree nskb in all three error paths.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98555"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/060f827aa3dc47939ee306da715cd6700d129616"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/41dcae82bece9f106b4dff0ee777bba8d157c8a8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/72f9dd522f8d6c5a00be9695c7bb74631eb5069e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8b855b645841b5a04e20339a22bb6d593c9b790d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b859ba18b5a1067f71db5618c6a4a70d55fa308b"
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    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d360b31f1a3666579422872aa7d1a751e20b76f9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fec0fe6838a7f45175667701fb51abb23a6ffb1e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:07Z"
  }
}