CVE-2026-63905: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-vpxx-f4pr-jggr
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Advisory Summary

CVE-2026-63905 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-2026-63905 at a Glance

CVE Identifier CVE-2026-63905
GHSA Identifier GHSA-vpxx-f4pr-jggr
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-2026-63905

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-2026-63905, 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: usbip: vudc: Fix use after free bug in vudc_remove due to race condition This patch follows up Zheng Wang's 2023 report of a use-after-free in vudc_remove(). The original thread stalled on Shuah Khan's request for runtime testing of the unplug/unbind path. This patch supplies that testing and keeps Zheng's original fix shape. In vudc_probe(), v_init_timer() binds udc->tr_timer.timer to v_timer(). usbip_sockfd_store() starts the timer via v_start_timer()/v_kick_timer(). vudc_remove() can then free the containing struct vudc while the timer is still pending or executing. KASAN confirms the race on an unpatched x86_64 QEMU guest with CONFIG_KASAN=y, CONFIG_USBIP_VUDC=y, CONFIG_USB_ZERO=y, and a tight loop that repeatedly writes a socket fd to usbip_sockfd, closes the socket pair, and unbinds/rebinds usbip-vudc.0: BUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x8ba/0x8e0 Write of size 8 at addr ffff888001b80740 by task trigger_and_unb/239 Allocated by task 239: vudc_probe+0x4d/0xaa0 Freed by task 239: kfree+0x18f/0x520 device_release_driver_internal+0x388/0x540 unbind_store+0xd9/0x100 This lands in the timer core rather than v_timer() itself because the embedded timer_list is being walked after its containing struct vudc has already been freed. The underlying lifetime bug is the same one Zheng reported. With v_stop_timer() called from vudc_remove() and the timer deleted synchronously, the same harness completed 5000 bind/unbind iterations with no KASAN report.

References

NVD — CVE-2026-63905 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63905
git.kernel.org/stable/c/1036ac6148... WEB
https://git.kernel.org/stable/c/1036ac6148995feaf486014d32bf26bf993c06a9
git.kernel.org/stable/c/207bf80362... WEB
https://git.kernel.org/stable/c/207bf80362df3fce8ebc9723351dcb1bc6d9ed0f
git.kernel.org/stable/c/61704e5cf9... WEB
https://git.kernel.org/stable/c/61704e5cf9cd7464b510eb606e7e2978b1160a64
git.kernel.org/stable/c/88d459e5b5... WEB
https://git.kernel.org/stable/c/88d459e5b5a46da1ef9fd6f52d9439343edeec88
git.kernel.org/stable/c/a0638db234... WEB
https://git.kernel.org/stable/c/a0638db2340ee053ab0450656a763fd111475e54
git.kernel.org/stable/c/d07ed70746... WEB
https://git.kernel.org/stable/c/d07ed707467ce05ea9c03412d0c5ee9d0fe386a6
git.kernel.org/stable/c/d96209626a... WEB
https://git.kernel.org/stable/c/d96209626a29ea64666be98c30b30ac82e5f1be6
git.kernel.org/stable/c/dcc1c90b28... WEB
https://git.kernel.org/stable/c/dcc1c90b28b28b7c493547506297e78653f81952

Frequently Asked Questions

What is CVE-2026-63905?
CVE-2026-63905 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-2026-63905?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-63905?
CVE-2026-63905 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-63905?
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-vpxx-f4pr-jggr",
  "modified" : "2026-07-19T18:31:45Z",
  "published" : "2026-07-19T18:31:45Z",
  "aliases" : [ "CVE-2026-63905" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nusbip: vudc: Fix use after free bug in vudc_remove due to race condition\n\nThis patch follows up Zheng Wang's 2023 report of a use-after-free in\nvudc_remove(). The original thread stalled on Shuah Khan's request for\nruntime testing of the unplug/unbind path. This patch supplies that\ntesting and keeps Zheng's original fix shape.\n\nIn vudc_probe(), v_init_timer() binds udc->tr_timer.timer to v_timer().\nusbip_sockfd_store() starts the timer via v_start_timer()/v_kick_timer().\nvudc_remove() can then free the containing struct vudc while the timer is\nstill pending or executing.\n\nKASAN confirms the race on an unpatched x86_64 QEMU guest with\nCONFIG_KASAN=y, CONFIG_USBIP_VUDC=y, CONFIG_USB_ZERO=y, and a tight loop\nthat repeatedly writes a socket fd to usbip_sockfd, closes the socket\npair, and unbinds/rebinds usbip-vudc.0:\n\n  BUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x8ba/0x8e0\n  Write of size 8 at addr ffff888001b80740 by task trigger_and_unb/239\n  Allocated by task 239:\n    vudc_probe+0x4d/0xaa0\n  Freed by task 239:\n    kfree+0x18f/0x520\n    device_release_driver_internal+0x388/0x540\n    unbind_store+0xd9/0x100\n\nThis lands in the timer core rather than v_timer() itself because the\nembedded timer_list is being walked after its containing struct vudc has\nalready been freed. The underlying lifetime bug is the same one Zheng\nreported.\n\nWith v_stop_timer() called from vudc_remove() and the timer deleted\nsynchronously, the same harness completed 5000 bind/unbind iterations\nwith no KASAN report.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-63905"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1036ac6148995feaf486014d32bf26bf993c06a9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/207bf80362df3fce8ebc9723351dcb1bc6d9ed0f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/61704e5cf9cd7464b510eb606e7e2978b1160a64"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/88d459e5b5a46da1ef9fd6f52d9439343edeec88"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a0638db2340ee053ab0450656a763fd111475e54"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d07ed707467ce05ea9c03412d0c5ee9d0fe386a6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d96209626a29ea64666be98c30b30ac82e5f1be6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dcc1c90b28b28b7c493547506297e78653f81952"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T16:17:08Z"
  }
}