CVE-2026-68441: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-5v73-p3r2-qvx5
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Advisory Summary

CVE-2026-68441 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-2026-68441 at a Glance

CVE Identifier CVE-2026-68441
GHSA Identifier GHSA-5v73-p3r2-qvx5
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-2026-68441

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-2026-68441, 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: Handle TC_ACT_REDIRECT from qdisc filter chains When a TC filter attached to a qdisc filter chain returns TC_ACT_REDIRECT (ex: via an eBPF program calling bpf_redirect() or an act_bpf action), the redirect was silently lost i.e no qdisc classify function handled TC_ACT_REDIRECT, so the packet fell through the switch and was enqueued normally instead of being redirected. This has been broken since bpf_redirect() was introduced for TC in commit 27b29f63058d ("bpf: add bpf_redirect() helper"). We got lucky for a long time because bpf_net_context was a per-CPU variable that was always available. commit 401cb7dae813 ("net: Reference bpf_redirect_info via task_struct on PREEMPT_RT.") turned bpf_net_context into a task_struct member that is only set up by explicit callers. Without a caller setting it up, bpf_redirect() itself crashes with a NULL pointer dereference in bpf_net_ctx_get_ri(). However, even with bpf_net_context available, TC_ACT_REDIRECT from qdisc filter chains cannot be honored without adding skb_do_redirect() calls to every qdisc classify function, which would require changes across net/sched/. Isolate it to ebpf core where it belongs. Instead, add a tcf_classify_qdisc() inline helper in pkt_cls.h, as a wrapper around tcf_classify() for use by qdisc classify functions and tcf_qevent_handle(). When the classify verdict is TC_ACT_REDIRECT, the wrapper converts it to TC_ACT_SHOT, dropping the packet rather than letting it continue silently. Dropping is preferred over letting the packet through because the user immediately sees packet loss. Silently passing the packet through would hide the problem and leave the user wondering why their redirect is not working. The clsact fast path, tc_run() continues to call tcf_classify() directly and is unaffected: TC_ACT_REDIRECT is returned as-is and handled by sch_handle_egress/ingress() calling skb_do_redirect() as before.

References

NVD — CVE-2026-68441 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68441
git.kernel.org/stable/c/9cbad9c812... WEB
https://git.kernel.org/stable/c/9cbad9c8125f5fe377c0800ab08f7196eab44456
git.kernel.org/stable/c/c8fd74445e... WEB
https://git.kernel.org/stable/c/c8fd74445e86f88096d2f6cf0f9e4d54d8ed1781
git.kernel.org/stable/c/ec48b3be2c... WEB
https://git.kernel.org/stable/c/ec48b3be2c8595dd290be883dbd4fb8b2f9f5d5e

Frequently Asked Questions

What is CVE-2026-68441?
CVE-2026-68441 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-2026-68441?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-68441?
CVE-2026-68441 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-68441?
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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  "schema_version" : "1.4.0",
  "id" : "GHSA-5v73-p3r2-qvx5",
  "modified" : "2026-10-15T12:30:40Z",
  "published" : "2026-08-12T00:31:12Z",
  "aliases" : [ "CVE-2026-68441" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: Handle TC_ACT_REDIRECT from qdisc filter chains\n\nWhen a TC filter attached to a qdisc filter chain returns\nTC_ACT_REDIRECT (ex: via an eBPF program calling bpf_redirect() or an\nact_bpf action), the redirect was silently lost i.e no qdisc classify\nfunction handled TC_ACT_REDIRECT, so the packet fell through the\nswitch and was enqueued normally instead of being redirected.\n\nThis has been broken since bpf_redirect() was introduced for TC in\ncommit 27b29f63058d (\"bpf: add bpf_redirect() helper\"). We got lucky\nfor a long time because bpf_net_context was a per-CPU variable that\nwas always available.\n\ncommit 401cb7dae813 (\"net: Reference bpf_redirect_info via task_struct\non PREEMPT_RT.\") turned bpf_net_context into a task_struct member that\nis only set up by explicit callers. Without a caller setting it up,\nbpf_redirect() itself crashes with a NULL pointer dereference in\nbpf_net_ctx_get_ri(). However, even with bpf_net_context available,\nTC_ACT_REDIRECT from qdisc filter chains cannot be honored without\nadding skb_do_redirect() calls to every qdisc classify function, which\nwould require changes across net/sched/. Isolate it to ebpf core where\nit belongs.\n\nInstead, add a tcf_classify_qdisc() inline helper in pkt_cls.h, as a\nwrapper around tcf_classify() for use by qdisc classify functions and\ntcf_qevent_handle(). When the classify verdict is TC_ACT_REDIRECT,\nthe wrapper converts it to TC_ACT_SHOT, dropping the packet rather\nthan letting it continue silently. Dropping is preferred over\nletting the packet through because the user immediately sees packet\nloss. Silently passing the packet through would hide the problem and\nleave the user wondering why their redirect is not working.\n\nThe clsact fast path, tc_run() continues to call tcf_classify() directly\nand is unaffected: TC_ACT_REDIRECT is returned as-is and handled by\nsch_handle_egress/ingress() calling skb_do_redirect() as before.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-68441"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9cbad9c8125f5fe377c0800ab08f7196eab44456"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c8fd74445e86f88096d2f6cf0f9e4d54d8ed1781"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ec48b3be2c8595dd290be883dbd4fb8b2f9f5d5e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-12T00:17:44Z"
  }
}