CVE-2026-93167: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-fgg4-f5v2-253f
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Advisory Summary

CVE-2026-93167 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-2026-93167 at a Glance

CVE Identifier CVE-2026-93167
GHSA Identifier GHSA-fgg4-f5v2-253f
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-2026-93167

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-2026-93167, 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: csky: Fix a4/a5 restoration in syscall trace path The syscall trace path reloads syscall arguments from pt_regs before calling the syscall handler. On C-SKY ABIv2, the 5th and 6th syscall arguments are prepared as stack arguments before invoking syscallid. The current code adjusts sp before loading LSAVE_A4 and LSAVE_A5. Since those offsets are relative to the original pt_regs base, loading them after changing sp fetches the wrong slots. As a result, traced syscalls that use the 5th or 6th argument may receive corrupted arguments. This is visible with mmap2(), which takes six arguments. A small PTRACE_SYSCALL reproducer opens a file and maps one page with: mmap(NULL, 4096, PROT_READ | PROT_EXEC, MAP_PRIVATE, fd, 0) Before the fix, the traced child fails the mmap and exits with 12. After the fix, the mapping succeeds and the child exits with 0. Fix the trace path by loading a4/a5 from pt_regs before changing sp. Tested on: ck860f, linux-4.19.15, C-SKY abiv2

References

NVD — CVE-2026-93167 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93167
git.kernel.org/stable/c/31c81b376e... WEB
https://git.kernel.org/stable/c/31c81b376e5f058c7f2c94f69719cf7caec2fc3f
git.kernel.org/stable/c/343aa52754... WEB
https://git.kernel.org/stable/c/343aa5275484d627c921a42e8e115cae366be5de
git.kernel.org/stable/c/64e3ec7a71... WEB
https://git.kernel.org/stable/c/64e3ec7a71d3b715e2567f19f64207f04999bb0c
git.kernel.org/stable/c/863fa63fd1... WEB
https://git.kernel.org/stable/c/863fa63fd1491f201ac819f805a8db98d2a32c3d
git.kernel.org/stable/c/a776afa894... WEB
https://git.kernel.org/stable/c/a776afa89424570bfa637ebf812ca281a5732904
git.kernel.org/stable/c/abb81e5ce7... WEB
https://git.kernel.org/stable/c/abb81e5ce7d995baa41556b8125fa59e28ba3be8
git.kernel.org/stable/c/e71a3dc5b8... WEB
https://git.kernel.org/stable/c/e71a3dc5b8d2ea4d9cfbdb135d6b7777de84212e
git.kernel.org/stable/c/e9ae8e86ee... WEB
https://git.kernel.org/stable/c/e9ae8e86eed68bea5d2670eadf61938a43bd2263

Frequently Asked Questions

What is CVE-2026-93167?
CVE-2026-93167 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-2026-93167?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-93167?
CVE-2026-93167 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93167?
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-fgg4-f5v2-253f",
  "modified" : "2026-09-17T18:32:13Z",
  "published" : "2026-09-17T18:32:13Z",
  "aliases" : [ "CVE-2026-93167" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ncsky: Fix a4/a5 restoration in syscall trace path\n\nThe syscall trace path reloads syscall arguments from pt_regs before\ncalling the syscall handler. On C-SKY ABIv2, the 5th and 6th syscall\narguments are prepared as stack arguments before invoking syscallid.\n\nThe current code adjusts sp before loading LSAVE_A4 and LSAVE_A5. Since\nthose offsets are relative to the original pt_regs base, loading them\nafter changing sp fetches the wrong slots. As a result, traced syscalls\nthat use the 5th or 6th argument may receive corrupted arguments.\n\nThis is visible with mmap2(), which takes six arguments. A small\nPTRACE_SYSCALL reproducer opens a file and maps one page with:\n\n  mmap(NULL, 4096, PROT_READ | PROT_EXEC, MAP_PRIVATE, fd, 0)\n\nBefore the fix, the traced child fails the mmap and exits with 12.\nAfter the fix, the mapping succeeds and the child exits with 0.\n\nFix the trace path by loading a4/a5 from pt_regs before changing sp.\n\nTested on: ck860f, linux-4.19.15, C-SKY abiv2",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93167"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/31c81b376e5f058c7f2c94f69719cf7caec2fc3f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/343aa5275484d627c921a42e8e115cae366be5de"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/64e3ec7a71d3b715e2567f19f64207f04999bb0c"
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    "type" : "WEB",
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e9ae8e86eed68bea5d2670eadf61938a43bd2263"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:18:12Z"
  }
}