CVE-2026-43411: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-5396-3j5p-9gg2
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CVSS 5.5
CWE-369
Published
Advisory Summary

CVE-2026-43411 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-369: Divide By Zero) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product divides a value by zero.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-43411 at a Glance

CVE Identifier CVE-2026-43411
GHSA Identifier GHSA-5396-3j5p-9gg2
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-369: Divide By Zero
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-43411

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-2026-43411, 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 CWE-369: Divide By Zero, where the product divides a value by zero. 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: tipc: fix divide-by-zero in tipc_sk_filter_connect() A user can set conn_timeout to any value via setsockopt(TIPC_CONN_TIMEOUT), including values less than 4. When a SYN is rejected with TIPC_ERR_OVERLOAD and the retry path in tipc_sk_filter_connect() executes: delay %= (tsk->conn_timeout / 4); If conn_timeout is in the range [0, 3], the integer division yields 0, and the modulo operation triggers a divide-by-zero exception, causing a kernel oops/panic. Fix this by clamping conn_timeout to a minimum of 4 at the point of use in tipc_sk_filter_connect(). Oops: divide error: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 119 Comm: poc-F144 Not tainted 7.0.0-rc2+ RIP: 0010:tipc_sk_filter_rcv (net/tipc/socket.c:2236 net/tipc/socket.c:2362) Call Trace: tipc_sk_backlog_rcv (include/linux/instrumented.h:82 include/linux/atomic/atomic-instrumented.h:32 include/net/sock.h:2357 net/tipc/socket.c:2406) __release_sock (include/net/sock.h:1185 net/core/sock.c:3213) release_sock (net/core/sock.c:3797) tipc_connect (net/tipc/socket.c:2570) __sys_connect (include/linux/file.h:62 include/linux/file.h:83 net/socket.c:2098)

References

NVD — CVE-2026-43411 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43411
git.kernel.org/stable/c/2754e7b3d6... WEB
https://git.kernel.org/stable/c/2754e7b3d64748643df867d1ea6fec522914b635
git.kernel.org/stable/c/338c5edeb6... WEB
https://git.kernel.org/stable/c/338c5edeb6ae3f12a4b84dff9d71f6f7f8c202c3
git.kernel.org/stable/c/3bc9998041... WEB
https://git.kernel.org/stable/c/3bc9998041076ee05d3f312a22cee6b2ca35527f
git.kernel.org/stable/c/579956f9f2... WEB
https://git.kernel.org/stable/c/579956f9f297eb1b6a5d24de313f3acccee1f9d5
git.kernel.org/stable/c/600feb0a66... WEB
https://git.kernel.org/stable/c/600feb0a66a98c6b7f6f02b5f3612e75f9b8540f
git.kernel.org/stable/c/6c5a9baa15... WEB
https://git.kernel.org/stable/c/6c5a9baa15de240e747263aba435a0951da8d8d2
git.kernel.org/stable/c/a360d3815a... WEB
https://git.kernel.org/stable/c/a360d3815aae1f00dd71b7714a846482e85cc1f7
git.kernel.org/stable/c/c2ebfbe63d... WEB
https://git.kernel.org/stable/c/c2ebfbe63deb7bfd4dc2532bae62a7ed67713272

Frequently Asked Questions

What is CVE-2026-43411?
CVE-2026-43411 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-369: Divide By Zero.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-43411?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-43411?
CVE-2026-43411 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-43411?
CVE-2026-43411 is classified under CWE-369: Divide By Zero (The product divides a value by zero.).
How can I check Maven dependencies for CVE-2026-43411?
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-5396-3j5p-9gg2",
  "modified" : "2026-05-21T18:33:06Z",
  "published" : "2026-05-08T15:31:27Z",
  "aliases" : [ "CVE-2026-43411" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix divide-by-zero in tipc_sk_filter_connect()\n\nA user can set conn_timeout to any value via\nsetsockopt(TIPC_CONN_TIMEOUT), including values less than 4.  When a\nSYN is rejected with TIPC_ERR_OVERLOAD and the retry path in\ntipc_sk_filter_connect() executes:\n\n    delay %= (tsk->conn_timeout / 4);\n\nIf conn_timeout is in the range [0, 3], the integer division yields 0,\nand the modulo operation triggers a divide-by-zero exception, causing a\nkernel oops/panic.\n\nFix this by clamping conn_timeout to a minimum of 4 at the point of use\nin tipc_sk_filter_connect().\n\nOops: divide error: 0000 [#1] SMP KASAN NOPTI\nCPU: 0 UID: 0 PID: 119 Comm: poc-F144 Not tainted 7.0.0-rc2+\nRIP: 0010:tipc_sk_filter_rcv (net/tipc/socket.c:2236 net/tipc/socket.c:2362)\nCall Trace:\n tipc_sk_backlog_rcv (include/linux/instrumented.h:82 include/linux/atomic/atomic-instrumented.h:32 include/net/sock.h:2357 net/tipc/socket.c:2406)\n __release_sock (include/net/sock.h:1185 net/core/sock.c:3213)\n release_sock (net/core/sock.c:3797)\n tipc_connect (net/tipc/socket.c:2570)\n __sys_connect (include/linux/file.h:62 include/linux/file.h:83 net/socket.c:2098)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-43411"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2754e7b3d64748643df867d1ea6fec522914b635"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/338c5edeb6ae3f12a4b84dff9d71f6f7f8c202c3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3bc9998041076ee05d3f312a22cee6b2ca35527f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/579956f9f297eb1b6a5d24de313f3acccee1f9d5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/600feb0a66a98c6b7f6f02b5f3612e75f9b8540f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6c5a9baa15de240e747263aba435a0951da8d8d2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a360d3815aae1f00dd71b7714a846482e85cc1f7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c2ebfbe63deb7bfd4dc2532bae62a7ed67713272"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-369" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-08T15:16:52Z"
  }
}