CVE-2026-98696 (GCVE-0-2026-98696)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:46 – Updated: 2026-10-30 12:38
VLAI
Title
USB: serial: fix driver deregistration order
Summary
In the Linux kernel, the following vulnerability has been resolved: USB: serial: fix driver deregistration order USB serial driver modules register one driver for the USB bus and one or more drivers for the ports on the USB serial bus. When unloading a driver module, the USB driver must be deregistered before the USB serial bus drivers so that I/O is stopped before unbinding the ports to avoid use-after-free in completion handlers accessing port data. Note that the "new_id" attributes must first be removed to prevent new ids from being added and triggering a probe of the USB driver after it has been deregistered.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6820 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 765e0ba62613fb90f09c1b5926750df0aa56f349 , < 991904982827f07706c643bb0428c4b689b254e3 (git)
Affected: 765e0ba62613fb90f09c1b5926750df0aa56f349 , < 7c65438e3b98bd6009af09db8c725547192cdfe0 (git)
Affected: 765e0ba62613fb90f09c1b5926750df0aa56f349 , < 2f12343f39e316ff66adc84a6db3569f33b50f66 (git)
Affected: 765e0ba62613fb90f09c1b5926750df0aa56f349 , < e7ad832b1144df19cbbaaa655625c6f984e85b9f (git)
Affected: 765e0ba62613fb90f09c1b5926750df0aa56f349 , < 9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe (git)
Affected: 765e0ba62613fb90f09c1b5926750df0aa56f349 , < a1aa474768f69ea3a70da523f00f74c264cfa10e (git)
Affected: 765e0ba62613fb90f09c1b5926750df0aa56f349 , < 428d479a0d31460fbf5969ab262ccd673f1fac01 (git)
Affected: 765e0ba62613fb90f09c1b5926750df0aa56f349 , < 646e5b28b4fdbc1b828a2398d6ced2c1dd308a46 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.4
Unaffected: 0 , < 3.4 (semver)
Unaffected: 5.10.273 , ≤ 5.10.* (semver)
Unaffected: 5.15.224 , ≤ 5.15.* (semver)
Unaffected: 6.1.191 , ≤ 6.1.* (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.113 , ≤ 6.12.* (semver)
Unaffected: 6.18.56 , ≤ 6.18.* (semver)
Unaffected: 7.2.10 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/serial/bus.c",
            "drivers/usb/serial/usb-serial.c",
            "include/linux/usb/serial.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "991904982827f07706c643bb0428c4b689b254e3",
              "status": "affected",
              "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
              "versionType": "git"
            },
            {
              "lessThan": "7c65438e3b98bd6009af09db8c725547192cdfe0",
              "status": "affected",
              "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
              "versionType": "git"
            },
            {
              "lessThan": "2f12343f39e316ff66adc84a6db3569f33b50f66",
              "status": "affected",
              "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
              "versionType": "git"
            },
            {
              "lessThan": "e7ad832b1144df19cbbaaa655625c6f984e85b9f",
              "status": "affected",
              "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
              "versionType": "git"
            },
            {
              "lessThan": "9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe",
              "status": "affected",
              "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
              "versionType": "git"
            },
            {
              "lessThan": "a1aa474768f69ea3a70da523f00f74c264cfa10e",
              "status": "affected",
              "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
              "versionType": "git"
            },
            {
              "lessThan": "428d479a0d31460fbf5969ab262ccd673f1fac01",
              "status": "affected",
              "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
              "versionType": "git"
            },
            {
              "lessThan": "646e5b28b4fdbc1b828a2398d6ced2c1dd308a46",
              "status": "affected",
              "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/serial/bus.c",
            "drivers/usb/serial/usb-serial.c",
            "include/linux/usb/serial.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.4"
            },
            {
              "lessThan": "3.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.273",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.224",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.273",
                  "versionStartIncluding": "3.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.224",
                  "versionStartIncluding": "3.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.191",
                  "versionStartIncluding": "3.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.160",
                  "versionStartIncluding": "3.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.113",
                  "versionStartIncluding": "3.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.56",
                  "versionStartIncluding": "3.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.10",
                  "versionStartIncluding": "3.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "3.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: fix driver deregistration order\n\nUSB serial driver modules register one driver for the USB bus and one or\nmore drivers for the ports on the USB serial bus.\n\nWhen unloading a driver module, the USB driver must be deregistered\nbefore the USB serial bus drivers so that I/O is stopped before\nunbinding the ports to avoid use-after-free in completion handlers\naccessing port data.\n\nNote that the \"new_id\" attributes must first be removed to prevent new\nids from being added and triggering a probe of the USB driver after it\nhas been deregistered."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:38:48.486Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/991904982827f07706c643bb0428c4b689b254e3"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c65438e3b98bd6009af09db8c725547192cdfe0"
        },
        {
          "url": "https://git.kernel.org/stable/c/2f12343f39e316ff66adc84a6db3569f33b50f66"
        },
        {
          "url": "https://git.kernel.org/stable/c/e7ad832b1144df19cbbaaa655625c6f984e85b9f"
        },
        {
          "url": "https://git.kernel.org/stable/c/9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe"
        },
        {
          "url": "https://git.kernel.org/stable/c/a1aa474768f69ea3a70da523f00f74c264cfa10e"
        },
        {
          "url": "https://git.kernel.org/stable/c/428d479a0d31460fbf5969ab262ccd673f1fac01"
        },
        {
          "url": "https://git.kernel.org/stable/c/646e5b28b4fdbc1b828a2398d6ced2c1dd308a46"
        }
      ],
      "title": "USB: serial: fix driver deregistration order",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98696",
    "datePublished": "2026-10-18T15:46:20.399Z",
    "dateReserved": "2026-09-25T10:25:14.365Z",
    "dateUpdated": "2026-10-30T12:38:48.486Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-98696",
      "date": "2026-11-02",
      "epss": "0.00176",
      "percentile": "0.07142"
    },
    "microsoft_vex": {
      "current_release_date": "2026-11-01T14:53:44.000Z",
      "cve": "CVE-2026-98696",
      "id": "msrc_CVE-2026-98696",
      "initial_release_date": "2026-10-20T01:02:11.000Z",
      "product_status:known_affected": "2",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "USB: serial: fix driver deregistration order",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98696.json",
      "version": "3"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/usb/serial/bus.c",
                  "drivers/usb/serial/usb-serial.c",
                  "include/linux/usb/serial.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "991904982827f07706c643bb0428c4b689b254e3",
                    "status": "affected",
                    "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "7c65438e3b98bd6009af09db8c725547192cdfe0",
                    "status": "affected",
                    "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "2f12343f39e316ff66adc84a6db3569f33b50f66",
                    "status": "affected",
                    "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "e7ad832b1144df19cbbaaa655625c6f984e85b9f",
                    "status": "affected",
                    "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe",
                    "status": "affected",
                    "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "a1aa474768f69ea3a70da523f00f74c264cfa10e",
                    "status": "affected",
                    "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "428d479a0d31460fbf5969ab262ccd673f1fac01",
                    "status": "affected",
                    "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "646e5b28b4fdbc1b828a2398d6ced2c1dd308a46",
                    "status": "affected",
                    "version": "765e0ba62613fb90f09c1b5926750df0aa56f349",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/usb/serial/bus.c",
                  "drivers/usb/serial/usb-serial.c",
                  "include/linux/usb/serial.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "3.4"
                  },
                  {
                    "lessThan": "3.4",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.273",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.224",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.191",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.160",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.113",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.56",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.10",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.3",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: fix driver deregistration order\n\nUSB serial driver modules register one driver for the USB bus and one or\nmore drivers for the ports on the USB serial bus.\n\nWhen unloading a driver module, the USB driver must be deregistered\nbefore the USB serial bus drivers so that I/O is stopped before\nunbinding the ports to avoid use-after-free in completion handlers\naccessing port data.\n\nNote that the \"new_id\" attributes must first be removed to prevent new\nids from being added and triggering a probe of the USB driver after it\nhas been deregistered."
          }
        ],
        "id": "CVE-2026-98696",
        "lastModified": "2026-10-30T13:21:18.720",
        "metrics": {},
        "published": "2026-10-18T16:17:23.070",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2f12343f39e316ff66adc84a6db3569f33b50f66"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/428d479a0d31460fbf5969ab262ccd673f1fac01"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/646e5b28b4fdbc1b828a2398d6ced2c1dd308a46"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7c65438e3b98bd6009af09db8c725547192cdfe0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/991904982827f07706c643bb0428c4b689b254e3"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffe"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a1aa474768f69ea3a70da523f00f74c264cfa10e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e7ad832b1144df19cbbaaa655625c6f984e85b9f"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-22T06:01:53+00:00",
      "cve": "CVE-2026-98696",
      "id": "CVE-2026-98696",
      "initial_release_date": "2026-10-18T00:00:00+00:00",
      "product_status:known_affected": "278",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: USB: serial: fix driver deregistration order",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98696.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.