CVE-2026-80766: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-xc7g-5f4m-53h6
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Advisory Summary

CVE-2026-80766 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-2026-80766 at a Glance

CVE Identifier CVE-2026-80766
GHSA Identifier GHSA-xc7g-5f4m-53h6
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-2026-80766

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-2026-80766, 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: HID: uclogic: fix use-after-free of inrange_timer on remove uclogic_remove() cancels the pen in-range timer and then stops the device: timer_delete_sync(&drvdata->inrange_timer); hid_hw_stop(hdev); timer_delete_sync() only guarantees the timer is idle at that instant. uclogic_raw_event_pen() keeps delivering pen reports until hid_hw_stop() stops the transport several lines later, and every report with pen->inrange == UCLOGIC_PARAMS_PEN_INRANGE_NONE re-arms the timer: mod_timer(&drvdata->inrange_timer, jiffies + msecs_to_jiffies(100)); A report landing between the timer_delete_sync() call and the transport teardown in hid_hw_stop() re-arms inrange_timer after it was cancelled. uclogic_remove() then returns and the devm drvdata is freed, while hid_hw_stop() has already freed the input device drvdata->pen_input points at, so when the timer fires ~100 ms later uclogic_inrange_timeout() dereferences freed memory -- a use-after-free in timer-softirq context. Swapping the two calls is not a fix: stopping the device first frees drvdata->pen_input via hidinput_disconnect() while the timer may still be pending, so a timer already armed before removal fires on the freed input device in the window before timer_delete_sync() runs. Use timer_shutdown_sync() before hid_hw_stop() instead. It cancels the timer, waits for a running callback while pen_input is still valid, and prevents any further re-arming -- a later mod_timer() from an in-flight report is silently ignored -- so the timer is provably dead before hid_hw_stop() frees the inputs. This is the ordering the timer core documents for this "timer re-armed from another path" teardown case.

References

NVD — CVE-2026-80766 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80766
git.kernel.org/stable/c/506fd50a90... WEB
https://git.kernel.org/stable/c/506fd50a9027340f0e9dcc587d10ccb03312dba6
git.kernel.org/stable/c/849e537160... WEB
https://git.kernel.org/stable/c/849e537160bbb77fe419ecc3944bfe125dcd441b
git.kernel.org/stable/c/9d77ac82e5... WEB
https://git.kernel.org/stable/c/9d77ac82e57ead056cf3f71d347083ed9244ad90
git.kernel.org/stable/c/dc5108f18f... WEB
https://git.kernel.org/stable/c/dc5108f18f58870a8dd4203a02a47e571a2be7f0
git.kernel.org/stable/c/e750cdb6de... WEB
https://git.kernel.org/stable/c/e750cdb6de009aace3c77f37fe2173f96175e8e4
git.kernel.org/stable/c/f13d0a0020... WEB
https://git.kernel.org/stable/c/f13d0a00204b05e62336da0ab72ea0d87b56690c
git.kernel.org/stable/c/f1b3ca0638... WEB
https://git.kernel.org/stable/c/f1b3ca06380531f49f988f4721d3ed30b0d7a5d2
git.kernel.org/stable/c/f40243358b... WEB
https://git.kernel.org/stable/c/f40243358b407aec362fe305fabfcdc94a3abd89

Frequently Asked Questions

What is CVE-2026-80766?
CVE-2026-80766 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-2026-80766?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80766?
CVE-2026-80766 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80766?
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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  "schema_version" : "1.4.0",
  "id" : "GHSA-xc7g-5f4m-53h6",
  "modified" : "2026-09-04T18:31:24Z",
  "published" : "2026-09-04T18:31:24Z",
  "aliases" : [ "CVE-2026-80766" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: uclogic: fix use-after-free of inrange_timer on remove\n\nuclogic_remove() cancels the pen in-range timer and then stops the\ndevice:\n\n\ttimer_delete_sync(&drvdata->inrange_timer);\n\thid_hw_stop(hdev);\n\ntimer_delete_sync() only guarantees the timer is idle at that instant.\nuclogic_raw_event_pen() keeps delivering pen reports until hid_hw_stop()\nstops the transport several lines later, and every report with\npen->inrange == UCLOGIC_PARAMS_PEN_INRANGE_NONE re-arms the timer:\n\n\tmod_timer(&drvdata->inrange_timer, jiffies + msecs_to_jiffies(100));\n\nA report landing between the timer_delete_sync() call and the transport\nteardown in hid_hw_stop() re-arms inrange_timer after it was cancelled.\nuclogic_remove() then returns and the devm drvdata is freed, while\nhid_hw_stop() has already freed the input device drvdata->pen_input\npoints at, so when the timer fires ~100 ms later\nuclogic_inrange_timeout() dereferences freed memory -- a use-after-free\nin timer-softirq context.\n\nSwapping the two calls is not a fix: stopping the device first frees\ndrvdata->pen_input via hidinput_disconnect() while the timer may still\nbe pending, so a timer already armed before removal fires on the freed\ninput device in the window before timer_delete_sync() runs.\n\nUse timer_shutdown_sync() before hid_hw_stop() instead. It cancels the\ntimer, waits for a running callback while pen_input is still valid, and\nprevents any further re-arming -- a later mod_timer() from an in-flight\nreport is silently ignored -- so the timer is provably dead before\nhid_hw_stop() frees the inputs. This is the ordering the timer core\ndocuments for this \"timer re-armed from another path\" teardown case.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80766"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/506fd50a9027340f0e9dcc587d10ccb03312dba6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/849e537160bbb77fe419ecc3944bfe125dcd441b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9d77ac82e57ead056cf3f71d347083ed9244ad90"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dc5108f18f58870a8dd4203a02a47e571a2be7f0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e750cdb6de009aace3c77f37fe2173f96175e8e4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f13d0a00204b05e62336da0ab72ea0d87b56690c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f1b3ca06380531f49f988f4721d3ed30b0d7a5d2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f40243358b407aec362fe305fabfcdc94a3abd89"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-04T16:18:01Z"
  }
}