CVE-2026-68370: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-c79g-9hcr-cr2x
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CVSS 7.8
Published
Advisory Summary

CVE-2026-68370 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-68370 at a Glance

CVE Identifier CVE-2026-68370
GHSA Identifier GHSA-c79g-9hcr-cr2x
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-68370

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-2026-68370, 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: usb: gadget: dummy_hcd: prevent fifo_req reuse during giveback dummy_hcd embeds a single shared usb_request (dum->fifo_req) that the "emulated single-request FIFO" fast-path in dummy_queue() reuses for small IN transfers: it copies the caller's request into it (req->req = *_req) and queues it, treating list_empty(&fifo_req.queue) as "the slot is free". The completion side (dummy_timer/transfer/nuke/dummy_dequeue) follows the standard pattern: list_del_init(&req->queue) unlinks the request, then the lock is dropped and usb_gadget_giveback_request() invokes req->complete(). But list_del_init() makes fifo_req.queue look empty *before* the completion callback returns, so a concurrent dummy_queue() on another CPU sees the slot as free, reuses fifo_req and runs req->req = *_req -- overwriting req->complete while dummy_timer is mid-calling it. The indirect call then jumps to a clobbered pointer, causing a general protection fault / page fault in dummy_timer (syzkaller extid faf3a6cf579fc65591ca). The clobbering write is an in-bounds memcpy on a live shared object, so KASAN cannot flag it. Add a fifo_req_busy bit covering the shared request's whole lifetime: set it in dummy_queue() when the FIFO fast-path takes fifo_req (making it the fast-path guard, replacing the list_empty(&fifo_req.queue) test), and clear it after the completion callback has returned, via a dummy_giveback() helper used at all four gadget-request giveback sites. The shared slot can no longer be reused until its completion callback has finished.

References

NVD — CVE-2026-68370 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68370
git.kernel.org/stable/c/16a685172a... WEB
https://git.kernel.org/stable/c/16a685172abc9233728830e27d26ffa778975b51
git.kernel.org/stable/c/3cab0e5498... WEB
https://git.kernel.org/stable/c/3cab0e5498d0fbb21fe1a9181f7bda9a844a697e
git.kernel.org/stable/c/67b589d09a... WEB
https://git.kernel.org/stable/c/67b589d09a96882d56842dced5698ed8dd06ce45
git.kernel.org/stable/c/95f30a2161... WEB
https://git.kernel.org/stable/c/95f30a21612cc65761c58ba044b1767699437317
git.kernel.org/stable/c/d5e5cd3654... WEB
https://git.kernel.org/stable/c/d5e5cd3654d2b5359a12ea6586120f05b28634ee
git.kernel.org/stable/c/e239ea91b4... WEB
https://git.kernel.org/stable/c/e239ea91b48180ed48a86ac25643832a02c88456
git.kernel.org/stable/c/e24b336182... WEB
https://git.kernel.org/stable/c/e24b33618231034bf01dfaff4fd3409d4b4d5b2e
git.kernel.org/stable/c/e2b2740f12... WEB
https://git.kernel.org/stable/c/e2b2740f1242bc70b5b46da2cdbbaa419f490e59

Frequently Asked Questions

What is CVE-2026-68370?
CVE-2026-68370 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-2026-68370?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-68370?
CVE-2026-68370 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-68370?
CVE-2026-68370 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-68370?
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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  "id" : "GHSA-c79g-9hcr-cr2x",
  "modified" : "2026-08-19T18:32:17Z",
  "published" : "2026-08-10T15:33:48Z",
  "aliases" : [ "CVE-2026-68370" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: dummy_hcd: prevent fifo_req reuse during giveback\n\ndummy_hcd embeds a single shared usb_request (dum->fifo_req) that the\n\"emulated single-request FIFO\" fast-path in dummy_queue() reuses for\nsmall IN transfers: it copies the caller's request into it\n(req->req = *_req) and queues it, treating list_empty(&fifo_req.queue)\nas \"the slot is free\".\n\nThe completion side (dummy_timer/transfer/nuke/dummy_dequeue) follows\nthe standard pattern: list_del_init(&req->queue) unlinks the request,\nthen the lock is dropped and usb_gadget_giveback_request() invokes\nreq->complete().  But list_del_init() makes fifo_req.queue look empty\n*before* the completion callback returns, so a concurrent dummy_queue()\non another CPU sees the slot as free, reuses fifo_req and runs\nreq->req = *_req -- overwriting req->complete while dummy_timer is\nmid-calling it.  The indirect call then jumps to a clobbered pointer,\ncausing a general protection fault / page fault in dummy_timer\n(syzkaller extid faf3a6cf579fc65591ca).  The clobbering write is an\nin-bounds memcpy on a live shared object, so KASAN cannot flag it.\n\nAdd a fifo_req_busy bit covering the shared request's whole lifetime:\nset it in dummy_queue() when the FIFO fast-path takes fifo_req (making\nit the fast-path guard, replacing the list_empty(&fifo_req.queue)\ntest), and clear it after the completion callback has returned, via a\ndummy_giveback() helper used at all four gadget-request giveback\nsites.  The shared slot can no longer be reused until its completion\ncallback has finished.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-68370"
  }, {
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    "url" : "https://git.kernel.org/stable/c/16a685172abc9233728830e27d26ffa778975b51"
  }, {
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  }, {
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    "url" : "https://git.kernel.org/stable/c/67b589d09a96882d56842dced5698ed8dd06ce45"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/95f30a21612cc65761c58ba044b1767699437317"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d5e5cd3654d2b5359a12ea6586120f05b28634ee"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e239ea91b48180ed48a86ac25643832a02c88456"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e24b33618231034bf01dfaff4fd3409d4b4d5b2e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e2b2740f1242bc70b5b46da2cdbbaa419f490e59"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-10T13:20:29Z"
  }
}