Vulnerability-Lookup

CVE-2026-64344 (GCVE-0-2026-64344)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-07-25 08:50

Title

USB: idmouse: fix use-after-free on disconnect race

Summary

In the Linux kernel, the following vulnerability has been resolved: USB: idmouse: fix use-after-free on disconnect race mutex_unlock() may access the mutex structure after releasing the lock and therefore cannot be used to manage lifetime of objects directly (unlike spinlocks and refcounts). [1][2] Use a kref to release the driver data to avoid use-after-free in mutex_unlock() when release() races with disconnect(). [1] a51749ab34d9 ("locking/mutex: Document that mutex_unlock() is non-atomic") [2] 2b9d9e0a9ba0 ("locking/mutex: Clarify that mutex_unlock(), and most other sleeping locks, can still use the lock object after it's unlocked")

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/31e75fed8f90cfea9…
https://git.kernel.org/stable/c/8d53b14ad4ccbff6d…
https://git.kernel.org/stable/c/f62622e947f82a385…
https://git.kernel.org/stable/c/60fc5ef4ecea3e3d1…
https://git.kernel.org/stable/c/d0f61acb51a8c8f3f…
https://git.kernel.org/stable/c/54c2b7356b4aeea46…
https://git.kernel.org/stable/c/e88cff5fbaa629f3c…
https://git.kernel.org/stable/c/ff002c153f9722cae…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 54d2bc068fd21bcb096660938bce7c7265613a24 , < 31e75fed8f90cfea9f8285e7ed135b0e452bf872 (git) Affected: 54d2bc068fd21bcb096660938bce7c7265613a24 , < 8d53b14ad4ccbff6d306b3a39c812303f4a87d41 (git) Affected: 54d2bc068fd21bcb096660938bce7c7265613a24 , < f62622e947f82a3854a8502d09492ffbdeb252b4 (git) Affected: 54d2bc068fd21bcb096660938bce7c7265613a24 , < 60fc5ef4ecea3e3d1fe556cecf53ddd13096ef09 (git) Affected: 54d2bc068fd21bcb096660938bce7c7265613a24 , < d0f61acb51a8c8f3fd41c303ddb7770cd83e7ed4 (git) Affected: 54d2bc068fd21bcb096660938bce7c7265613a24 , < 54c2b7356b4aeea467f9fb13b85e9e036bc428cb (git) Affected: 54d2bc068fd21bcb096660938bce7c7265613a24 , < e88cff5fbaa629f3cab45c8b46f395d62c2eb515 (git) Affected: 54d2bc068fd21bcb096660938bce7c7265613a24 , < ff002c153f9722caece3983cc23dc4d9d4652cb4 (git)
Linux	Linux	Affected: 2.6.24 Unaffected: 0 , < 2.6.24 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc3 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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              "version": "0",
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            },
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.96",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver"
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              "lessThanOrEqual": "7.1.*",
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              "versionType": "semver"
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      ],
      "cpeApplicability": [
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                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2-rc3",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: idmouse: fix use-after-free on disconnect race\n\nmutex_unlock() may access the mutex structure after releasing the lock\nand therefore cannot be used to manage lifetime of objects directly\n(unlike spinlocks and refcounts). [1][2]\n\nUse a kref to release the driver data to avoid use-after-free in\nmutex_unlock() when release() races with disconnect().\n\n[1] a51749ab34d9 (\"locking/mutex: Document that mutex_unlock() is\n                   non-atomic\")\n[2] 2b9d9e0a9ba0 (\"locking/mutex: Clarify that mutex_unlock(), and most\n                   other sleeping locks, can still use the lock object\n                   after it\u0027s unlocked\")"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T08:50:06.461Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/31e75fed8f90cfea9f8285e7ed135b0e452bf872"
        },
        {
          "url": "https://git.kernel.org/stable/c/8d53b14ad4ccbff6d306b3a39c812303f4a87d41"
        },
        {
          "url": "https://git.kernel.org/stable/c/f62622e947f82a3854a8502d09492ffbdeb252b4"
        },
        {
          "url": "https://git.kernel.org/stable/c/60fc5ef4ecea3e3d1fe556cecf53ddd13096ef09"
        },
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        },
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          "url": "https://git.kernel.org/stable/c/54c2b7356b4aeea467f9fb13b85e9e036bc428cb"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/ff002c153f9722caece3983cc23dc4d9d4652cb4"
        }
      ],
      "title": "USB: idmouse: fix use-after-free on disconnect race",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64344",
    "datePublished": "2026-07-25T08:50:06.461Z",
    "dateReserved": "2026-07-19T15:36:31.781Z",
    "dateUpdated": "2026-07-25T08:50:06.461Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64344",
      "date": "2026-07-26",
      "epss": "0.00177",
      "percentile": "0.07458"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64344\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-25T10:17:16.487\",\"lastModified\":\"2026-07-25T10:17:16.487\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nUSB: idmouse: fix use-after-free on disconnect race\\n\\nmutex_unlock() may access the mutex structure after releasing the lock\\nand therefore cannot be used to manage lifetime of objects directly\\n(unlike spinlocks and refcounts). [1][2]\\n\\nUse a kref to release the driver data to avoid use-after-free in\\nmutex_unlock() when release() races with disconnect().\\n\\n[1] a51749ab34d9 (\\\"locking/mutex: Document that mutex_unlock() is\\n                   non-atomic\\\")\\n[2] 2b9d9e0a9ba0 (\\\"locking/mutex: Clarify that mutex_unlock(), and most\\n                   other sleeping locks, can still use the lock object\\n                   after it\u0027s unlocked\\\")\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/usb/misc/idmouse.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"54d2bc068fd21bcb096660938bce7c7265613a24\",\"lessThan\":\"31e75fed8f90cfea9f8285e7ed135b0e452bf872\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54d2bc068fd21bcb096660938bce7c7265613a24\",\"lessThan\":\"8d53b14ad4ccbff6d306b3a39c812303f4a87d41\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54d2bc068fd21bcb096660938bce7c7265613a24\",\"lessThan\":\"f62622e947f82a3854a8502d09492ffbdeb252b4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54d2bc068fd21bcb096660938bce7c7265613a24\",\"lessThan\":\"60fc5ef4ecea3e3d1fe556cecf53ddd13096ef09\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54d2bc068fd21bcb096660938bce7c7265613a24\",\"lessThan\":\"d0f61acb51a8c8f3fd41c303ddb7770cd83e7ed4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54d2bc068fd21bcb096660938bce7c7265613a24\",\"lessThan\":\"54c2b7356b4aeea467f9fb13b85e9e036bc428cb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54d2bc068fd21bcb096660938bce7c7265613a24\",\"lessThan\":\"e88cff5fbaa629f3cab45c8b46f395d62c2eb515\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"54d2bc068fd21bcb096660938bce7c7265613a24\",\"lessThan\":\"ff002c153f9722caece3983cc23dc4d9d4652cb4\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/usb/misc/idmouse.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.24\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.24\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/31e75fed8f90cfea9f8285e7ed135b0e452bf872\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/54c2b7356b4aeea467f9fb13b85e9e036bc428cb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/60fc5ef4ecea3e3d1fe556cecf53ddd13096ef09\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8d53b14ad4ccbff6d306b3a39c812303f4a87d41\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d0f61acb51a8c8f3fd41c303ddb7770cd83e7ed4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e88cff5fbaa629f3cab45c8b46f395d62c2eb515\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f62622e947f82a3854a8502d09492ffbdeb252b4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ff002c153f9722caece3983cc23dc4d9d4652cb4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T16:01:21Z",
      "cve": "CVE-2026-64344",
      "id": "CVE-2026-64344",
      "initial_release_date": "2026-07-25T16:01:21Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64344",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64344.json",
      "version": "2"
    }
  }
}

GHSA-FPMV-M5RR-683W

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

In the Linux kernel, the following vulnerability has been resolved:

USB: idmouse: fix use-after-free on disconnect race

mutex_unlock() may access the mutex structure after releasing the lock and therefore cannot be used to manage lifetime of objects directly (unlike spinlocks and refcounts). [1][2]

Use a kref to release the driver data to avoid use-after-free in mutex_unlock() when release() races with disconnect().

[1] a51749ab34d9 ("locking/mutex: Document that mutex_unlock() is non-atomic") [2] 2b9d9e0a9ba0 ("locking/mutex: Clarify that mutex_unlock(), and most other sleeping locks, can still use the lock object after it's unlocked")

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-64344"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:16Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: idmouse: fix use-after-free on disconnect race\n\nmutex_unlock() may access the mutex structure after releasing the lock\nand therefore cannot be used to manage lifetime of objects directly\n(unlike spinlocks and refcounts). [1][2]\n\nUse a kref to release the driver data to avoid use-after-free in\nmutex_unlock() when release() races with disconnect().\n\n[1] a51749ab34d9 (\"locking/mutex: Document that mutex_unlock() is\n                   non-atomic\")\n[2] 2b9d9e0a9ba0 (\"locking/mutex: Clarify that mutex_unlock(), and most\n                   other sleeping locks, can still use the lock object\n                   after it\u0027s unlocked\")",
  "id": "GHSA-fpmv-m5rr-683w",
  "modified": "2026-07-25T12:31:32Z",
  "published": "2026-07-25T12:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64344"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/31e75fed8f90cfea9f8285e7ed135b0e452bf872"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54c2b7356b4aeea467f9fb13b85e9e036bc428cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60fc5ef4ecea3e3d1fe556cecf53ddd13096ef09"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d53b14ad4ccbff6d306b3a39c812303f4a87d41"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0f61acb51a8c8f3fd41c303ddb7770cd83e7ed4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e88cff5fbaa629f3cab45c8b46f395d62c2eb515"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f62622e947f82a3854a8502d09492ffbdeb252b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff002c153f9722caece3983cc23dc4d9d4652cb4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

Action not permitted

CVE-2026-64344 (GCVE-0-2026-64344)

GHSA-FPMV-M5RR-683W

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