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

Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-08-17 04:53
VLAI
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
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
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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 , ≤ * (original_commit_for_fix)
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-03T16:48:39+00:00",
      "cve": "CVE-2026-64344",
      "id": "CVE-2026-64344",
      "initial_release_date": "2026-07-25T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: USB: idmouse: fix use-after-free on disconnect race",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64344.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-17T16:38:05Z",
      "cve": "CVE-2026-64344",
      "id": "CVE-2026-64344",
      "initial_release_date": "2026-07-25T16:01:21Z",
      "product_status:known_affected": "197",
      "product_status:known_not_affected": "101",
      "product_status:recommended": "4",
      "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": "5"
    }
  }
}



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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.