CVE-2026-93794: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-5fcw-5g57-rhgg
Share
Published
Advisory Summary

CVE-2026-93794 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-2026-93794 at a Glance

CVE Identifier CVE-2026-93794
GHSA Identifier GHSA-5fcw-5g57-rhgg
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-2026-93794

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-2026-93794, 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: smb/client: flush dirty data before punching a hole Punching a hole after a large buffered write may leave the range reported as data. Reproduce it with: xfs_io -f \ -c "pwrite -b 3m -S 0x61 0 3m" \ -c "fpunch 1m 1m" \ -c "seek -h 0" \ -c "seek -d 1m" \ /mnt/test/repro Punching 1 MiB at offset 1 MiB should produce: 0 1 MiB 2 MiB 3 MiB | DATA | HOLE | DATA | EOF Instead, the entire file is reported as data. SEEK_HOLE(0) returns EOF, and SEEK_DATA(1M) returns 1M. This happens because a dirty folio spanning the punched range can be written back after the punch and refill the hole. Fix this by flushing and waiting for dirty data in the punched range before invalidating the page cache and issuing FSCTL_SET_ZERO_DATA. The xfstests generic/539 pass against Samba/ksmbd with this change.

References

NVD — CVE-2026-93794 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93794
git.kernel.org/stable/c/216e469586... WEB
https://git.kernel.org/stable/c/216e469586057c29409e4ef8311d282388c6e251
git.kernel.org/stable/c/39562a56cd... WEB
https://git.kernel.org/stable/c/39562a56cdb515f6635c3e7bfe6629439b18a169
git.kernel.org/stable/c/6c265aca08... WEB
https://git.kernel.org/stable/c/6c265aca08155e519a8f6f6071c59dff4f535f70
git.kernel.org/stable/c/d7d2adcd02... WEB
https://git.kernel.org/stable/c/d7d2adcd022baade5cab65ca492ce63421ce3a6e

Frequently Asked Questions

What is CVE-2026-93794?
CVE-2026-93794 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-2026-93794?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-93794?
CVE-2026-93794 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93794?
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-5fcw-5g57-rhgg",
  "modified" : "2026-10-03T12:31:09Z",
  "published" : "2026-09-24T18:31:29Z",
  "aliases" : [ "CVE-2026-93794" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/client: flush dirty data before punching a hole\n\nPunching a hole after a large buffered write may leave the range\nreported as data. Reproduce it with:\n\n  xfs_io -f \\\n    -c \"pwrite -b 3m -S 0x61 0 3m\" \\\n    -c \"fpunch 1m 1m\" \\\n    -c \"seek -h 0\" \\\n    -c \"seek -d 1m\" \\\n    /mnt/test/repro\n\nPunching 1 MiB at offset 1 MiB should produce:\n\n  0          1 MiB       2 MiB       3 MiB\n  |  DATA    |   HOLE    |   DATA    | EOF\n\nInstead, the entire file is reported as data. SEEK_HOLE(0) returns EOF,\nand SEEK_DATA(1M) returns 1M.\n\nThis happens because a dirty folio spanning the punched range can be\nwritten back after the punch and refill the hole.\n\nFix this by flushing and waiting for dirty data in the punched range\nbefore invalidating the page cache and issuing FSCTL_SET_ZERO_DATA.\n\nThe xfstests generic/539 pass against Samba/ksmbd with this change.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93794"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/216e469586057c29409e4ef8311d282388c6e251"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/39562a56cdb515f6635c3e7bfe6629439b18a169"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6c265aca08155e519a8f6f6071c59dff4f535f70"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d7d2adcd022baade5cab65ca492ce63421ce3a6e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-24T17:17:12Z"
  }
}