Vulnerability-Lookup

CVE-2026-80572 (GCVE-0-2026-80572)

Vulnerability from cvelistv5 – Published: 2026-08-26 14:37 – Updated: 2026-08-26 14:37

Title

Input: byd - synchronize timer deletion before freeing private data

Summary

In the Linux kernel, the following vulnerability has been resolved: Input: byd - synchronize timer deletion before freeing private data byd_disconnect() uses timer_delete() before freeing the driver's private data. This does not wait for a running byd_clear_touch() callback, which dereferences the private data and its psmouse pointer. A callback racing with disconnect can therefore access the private data after it has been freed. The timer can also still be re-armed by byd_process_byte() while the disconnect is in progress. Use timer_shutdown_sync() before freeing the private data: it waits for a running callback and turns any later re-arm attempt into a no-op.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/8dbfd8e32a13e1167…
https://git.kernel.org/stable/c/2e509ef60ee41a2da…
https://git.kernel.org/stable/c/c83e79c0842ed2986…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 2d5f5611dd0de52e9a52b56391a7049a52184e72 , < 8dbfd8e32a13e116790780ed0be82b5a05eb9916 (git) Affected: 2d5f5611dd0de52e9a52b56391a7049a52184e72 , < 2e509ef60ee41a2da0deb062c262bb530143fb37 (git) Affected: 2d5f5611dd0de52e9a52b56391a7049a52184e72 , < c83e79c0842ed29860648bcce5022ef0ba5001c6 (git)	guessed
Linux	Linux	Affected: 4.6 Unaffected: 0 , < 4.6 (semver) Unaffected: 6.18.46 , ≤ 6.18.* (semver) Unaffected: 7.1.10 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/mouse/byd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8dbfd8e32a13e116790780ed0be82b5a05eb9916",
              "status": "affected",
              "version": "2d5f5611dd0de52e9a52b56391a7049a52184e72",
              "versionType": "git"
            },
            {
              "lessThan": "2e509ef60ee41a2da0deb062c262bb530143fb37",
              "status": "affected",
              "version": "2d5f5611dd0de52e9a52b56391a7049a52184e72",
              "versionType": "git"
            },
            {
              "lessThan": "c83e79c0842ed29860648bcce5022ef0ba5001c6",
              "status": "affected",
              "version": "2d5f5611dd0de52e9a52b56391a7049a52184e72",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/mouse/byd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.6"
            },
            {
              "lessThan": "4.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.46",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.10",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "4.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: byd - synchronize timer deletion before freeing private data\n\nbyd_disconnect() uses timer_delete() before freeing the driver\u0027s private\ndata.  This does not wait for a running byd_clear_touch() callback, which\ndereferences the private data and its psmouse pointer.  A callback racing\nwith disconnect can therefore access the private data after it has been\nfreed.  The timer can also still be re-armed by byd_process_byte() while\nthe disconnect is in progress.\n\nUse timer_shutdown_sync() before freeing the private data: it waits for\na running callback and turns any later re-arm attempt into a no-op."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-26T14:37:33.141Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8dbfd8e32a13e116790780ed0be82b5a05eb9916"
        },
        {
          "url": "https://git.kernel.org/stable/c/2e509ef60ee41a2da0deb062c262bb530143fb37"
        },
        {
          "url": "https://git.kernel.org/stable/c/c83e79c0842ed29860648bcce5022ef0ba5001c6"
        }
      ],
      "title": "Input: byd - synchronize timer deletion before freeing private data",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80572",
    "datePublished": "2026-08-26T14:37:33.141Z",
    "dateReserved": "2026-08-26T14:34:25.768Z",
    "dateUpdated": "2026-08-26T14:37:33.141Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-80572\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-26T15:17:13.140\",\"lastModified\":\"2026-08-26T15:17:13.140\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nInput: byd - synchronize timer deletion before freeing private data\\n\\nbyd_disconnect() uses timer_delete() before freeing the driver\u0027s private\\ndata.  This does not wait for a running byd_clear_touch() callback, which\\ndereferences the private data and its psmouse pointer.  A callback racing\\nwith disconnect can therefore access the private data after it has been\\nfreed.  The timer can also still be re-armed by byd_process_byte() while\\nthe disconnect is in progress.\\n\\nUse timer_shutdown_sync() before freeing the private data: it waits for\\na running callback and turns any later re-arm attempt into a no-op.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/input/mouse/byd.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2d5f5611dd0de52e9a52b56391a7049a52184e72\",\"lessThan\":\"8dbfd8e32a13e116790780ed0be82b5a05eb9916\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2d5f5611dd0de52e9a52b56391a7049a52184e72\",\"lessThan\":\"2e509ef60ee41a2da0deb062c262bb530143fb37\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2d5f5611dd0de52e9a52b56391a7049a52184e72\",\"lessThan\":\"c83e79c0842ed29860648bcce5022ef0ba5001c6\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/input/mouse/byd.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.6\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.6\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.46\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.10\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2e509ef60ee41a2da0deb062c262bb530143fb37\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8dbfd8e32a13e116790780ed0be82b5a05eb9916\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c83e79c0842ed29860648bcce5022ef0ba5001c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}

FKIE_CVE-2026-80572

Vulnerability from fkie_nvd - Published: 2026-08-26 15:17 - Updated: 2026-08-26 15:17

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2e509ef60ee41a2da0deb062c262bb530143fb37
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8dbfd8e32a13e116790780ed0be82b5a05eb9916
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c83e79c0842ed29860648bcce5022ef0ba5001c6

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/mouse/byd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8dbfd8e32a13e116790780ed0be82b5a05eb9916",
              "status": "affected",
              "version": "2d5f5611dd0de52e9a52b56391a7049a52184e72",
              "versionType": "git"
            },
            {
              "lessThan": "2e509ef60ee41a2da0deb062c262bb530143fb37",
              "status": "affected",
              "version": "2d5f5611dd0de52e9a52b56391a7049a52184e72",
              "versionType": "git"
            },
            {
              "lessThan": "c83e79c0842ed29860648bcce5022ef0ba5001c6",
              "status": "affected",
              "version": "2d5f5611dd0de52e9a52b56391a7049a52184e72",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/mouse/byd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.6"
            },
            {
              "lessThan": "4.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "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\nInput: byd - synchronize timer deletion before freeing private data\n\nbyd_disconnect() uses timer_delete() before freeing the driver\u0027s private\ndata.  This does not wait for a running byd_clear_touch() callback, which\ndereferences the private data and its psmouse pointer.  A callback racing\nwith disconnect can therefore access the private data after it has been\nfreed.  The timer can also still be re-armed by byd_process_byte() while\nthe disconnect is in progress.\n\nUse timer_shutdown_sync() before freeing the private data: it waits for\na running callback and turns any later re-arm attempt into a no-op."
    }
  ],
  "id": "CVE-2026-80572",
  "lastModified": "2026-08-26T15:17:13.140",
  "metrics": {},
  "published": "2026-08-26T15:17:13.140",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2e509ef60ee41a2da0deb062c262bb530143fb37"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8dbfd8e32a13e116790780ed0be82b5a05eb9916"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c83e79c0842ed29860648bcce5022ef0ba5001c6"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-80572 (GCVE-0-2026-80572)

FKIE_CVE-2026-80572

Tags

Sightings

Nomenclature