CVE-2026-93783: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-xv96-c36m-qhm7
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Advisory Summary

CVE-2026-93783 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-2026-93783 at a Glance

CVE Identifier CVE-2026-93783
GHSA Identifier GHSA-xv96-c36m-qhm7
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-2026-93783

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-2026-93783, 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: Bluetooth: RFCOMM: validate skb length in rfcomm_recv_frame rfcomm_recv_frame() casts skb->data to struct rfcomm_hdr and dereferences hdr->addr and hdr->ctrl without validating skb->len first. A truncated frame with skb->len less than the minimum header size causes an out-of-bounds read of uninitialized memory. Additionally, a zero-length frame causes skb->len-- to underflow to UINT_MAX, making skb_tail_pointer() read far past the buffer. Commit 23882b828c3c ("Bluetooth: RFCOMM: validate skb length in MCC handlers") fixed the same class of missing-length-check bugs in the MCC sub-handlers, but the top-level rfcomm_recv_frame() was left unfixed. KMSAN reports: BUG: KMSAN: uninit-value in rfcomm_run ... Uninit was created at: __alloc_skb+0x474/0xb60 vhci_write+0xe9/0x870 Fix this by rejecting frames smaller than sizeof(struct rfcomm_hdr) + 1 (the minimum frame must have a 3-byte header and a 1-byte FCS).

References

NVD — CVE-2026-93783 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93783
git.kernel.org/stable/c/30d1d9f349... WEB
https://git.kernel.org/stable/c/30d1d9f3495463f7c026e4c553127f79b486fcd6
git.kernel.org/stable/c/3829af5fab... WEB
https://git.kernel.org/stable/c/3829af5fab5a22405bf1e7d69068c2ec0fce46ca
git.kernel.org/stable/c/67dc3b40fa... WEB
https://git.kernel.org/stable/c/67dc3b40fae71b6b11c71e7ff69bac0758818c05
git.kernel.org/stable/c/b161eacd7f... WEB
https://git.kernel.org/stable/c/b161eacd7fa4a2d765724b5504ac6cc388e48f80
git.kernel.org/stable/c/b230e5bf50... WEB
https://git.kernel.org/stable/c/b230e5bf501c5edaf2eb0991cb862ac142031d4b
git.kernel.org/stable/c/bbc310caa2... WEB
https://git.kernel.org/stable/c/bbc310caa2b6bf5fe42896ba27da0fbc12e4ac51
git.kernel.org/stable/c/fb40eda151... WEB
https://git.kernel.org/stable/c/fb40eda15122f6b780228639c1ead6820340ff54

Frequently Asked Questions

What is CVE-2026-93783?
CVE-2026-93783 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-2026-93783?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-93783?
CVE-2026-93783 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93783?
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-xv96-c36m-qhm7",
  "modified" : "2026-10-03T12:31:08Z",
  "published" : "2026-09-24T18:31:28Z",
  "aliases" : [ "CVE-2026-93783" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: RFCOMM: validate skb length in rfcomm_recv_frame\n\nrfcomm_recv_frame() casts skb->data to struct rfcomm_hdr and dereferences\nhdr->addr and hdr->ctrl without validating skb->len first. A truncated\nframe with skb->len less than the minimum header size causes an\nout-of-bounds read of uninitialized memory. Additionally, a zero-length\nframe causes skb->len-- to underflow to UINT_MAX, making\nskb_tail_pointer() read far past the buffer.\n\nCommit 23882b828c3c (\"Bluetooth: RFCOMM: validate skb length in MCC\nhandlers\") fixed the same class of missing-length-check bugs in the MCC\nsub-handlers, but the top-level rfcomm_recv_frame() was left unfixed.\nKMSAN reports:\n\n  BUG: KMSAN: uninit-value in rfcomm_run\n  ...\n  Uninit was created at:\n    __alloc_skb+0x474/0xb60\n    vhci_write+0xe9/0x870\n\nFix this by rejecting frames smaller than sizeof(struct rfcomm_hdr) + 1\n(the minimum frame must have a 3-byte header and a 1-byte FCS).",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93783"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/30d1d9f3495463f7c026e4c553127f79b486fcd6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3829af5fab5a22405bf1e7d69068c2ec0fce46ca"
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    "url" : "https://git.kernel.org/stable/c/fb40eda15122f6b780228639c1ead6820340ff54"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-24T17:17:10Z"
  }
}