CVE-2025-40001 (GCVE-0-2025-40001)

Vulnerability from cvelistv5 – Published: 2025-10-18 08:03 – Updated: 2026-05-11 21:40
VLAI
Title
scsi: mvsas: Fix use-after-free bugs in mvs_work_queue
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: mvsas: Fix use-after-free bugs in mvs_work_queue During the detaching of Marvell's SAS/SATA controller, the original code calls cancel_delayed_work() in mvs_free() to cancel the delayed work item mwq->work_q. However, if mwq->work_q is already running, the cancel_delayed_work() may fail to cancel it. This can lead to use-after-free scenarios where mvs_free() frees the mvs_info while mvs_work_queue() is still executing and attempts to access the already-freed mvs_info. A typical race condition is illustrated below: CPU 0 (remove) | CPU 1 (delayed work callback) mvs_pci_remove() | mvs_free() | mvs_work_queue() cancel_delayed_work() | kfree(mvi) | | mvi-> // UAF Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the delayed work item is properly canceled and any executing delayed work item completes before the mvs_info is deallocated. This bug was found by static analysis.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6843 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 20b09c2992fefbe78f8cede7b404fb143a413c52 , < a6f68f219d4d4b92d7c781708d4afc4cc42961ec (git)
Affected: 20b09c2992fefbe78f8cede7b404fb143a413c52 , < aacd1777d4a795c387a20b9ca776e2c1225d05d7 (git)
Affected: 20b09c2992fefbe78f8cede7b404fb143a413c52 , < 6ba7e73cafd155a5d3abf560d315f0bab2b9d89f (git)
Affected: 20b09c2992fefbe78f8cede7b404fb143a413c52 , < c2c35cb2a31844f84f21ab364b38b4309d756d42 (git)
Affected: 20b09c2992fefbe78f8cede7b404fb143a413c52 , < 3c90f583d679c81a5a607a6ae0051251b6dee35b (git)
Affected: 20b09c2992fefbe78f8cede7b404fb143a413c52 , < 00d3af40b158ebf7c7db2b3bbb1598a54bf28127 (git)
Affected: 20b09c2992fefbe78f8cede7b404fb143a413c52 , < feb946d2fc9dc754bf3d594d42cd228860ff8647 (git)
Affected: 20b09c2992fefbe78f8cede7b404fb143a413c52 , < 60cd16a3b7439ccb699d0bf533799eeb894fd217 (git)
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Linux Linux Affected: 2.6.31
Unaffected: 0 , < 2.6.31 (semver)
Unaffected: 5.4.301 , ≤ 5.4.* (semver)
Unaffected: 5.10.246 , ≤ 5.10.* (semver)
Unaffected: 5.15.195 , ≤ 5.15.* (semver)
Unaffected: 6.1.157 , ≤ 6.1.* (semver)
Unaffected: 6.6.113 , ≤ 6.6.* (semver)
Unaffected: 6.12.54 , ≤ 6.12.* (semver)
Unaffected: 6.17.4 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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        }
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        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: mvsas: Fix use-after-free bugs in mvs_work_queue\n\nDuring the detaching of Marvell\u0027s SAS/SATA controller, the original code\ncalls cancel_delayed_work() in mvs_free() to cancel the delayed work\nitem mwq-\u003ework_q. However, if mwq-\u003ework_q is already running, the\ncancel_delayed_work() may fail to cancel it. This can lead to\nuse-after-free scenarios where mvs_free() frees the mvs_info while\nmvs_work_queue() is still executing and attempts to access the\nalready-freed mvs_info.\n\nA typical race condition is illustrated below:\n\nCPU 0 (remove)            | CPU 1 (delayed work callback)\nmvs_pci_remove()          |\n  mvs_free()              | mvs_work_queue()\n    cancel_delayed_work() |\n      kfree(mvi)          |\n                          |   mvi-\u003e // UAF\n\nReplace cancel_delayed_work() with cancel_delayed_work_sync() to ensure\nthat the delayed work item is properly canceled and any executing\ndelayed work item completes before the mvs_info is deallocated.\n\nThis bug was found by static analysis."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: mvsas: Corrige errores de uso despu\u00e9s de liberaci\u00f3n en mvs_work_queue\n\nDurante la desconexi\u00f3n del controlador SAS/SATA de Marvell, el c\u00f3digo original llama a cancel_delayed_work() en mvs_free() para cancelar el elemento de trabajo retrasado mwq-\u003ework_q. Sin embargo, si mwq-\u003ework_q ya est\u00e1 en ejecuci\u00f3n, cancel_delayed_work() puede fallar al cancelarlo. Esto puede llevar a escenarios de uso despu\u00e9s de liberaci\u00f3n donde mvs_free() libera el mvs_info mientras mvs_work_queue() todav\u00eda se est\u00e1 ejecutando e intenta acceder al mvs_info ya liberado.\n\nUna condici\u00f3n de carrera t\u00edpica se ilustra a continuaci\u00f3n:\n\nCPU 0 (eliminaci\u00f3n) | CPU 1 (callback de trabajo retrasado)\nmvs_pci_remove() |\n  mvs_free() |\n    cancel_delayed_work() |\n      kfree(mvi) |\n                          |   mvi-\u003e // UAF\n\nReemplace cancel_delayed_work() con cancel_delayed_work_sync() para asegurar que el elemento de trabajo retrasado se cancele correctamente y cualquier elemento de trabajo retrasado en ejecuci\u00f3n se complete antes de que se desasigne el mvs_info.\n\nEste error fue encontrado mediante an\u00e1lisis est\u00e1tico."
          }
        ],
        "id": "CVE-2025-40001",
        "lastModified": "2026-10-19T21:10:00.160",
        "metrics": {},
        "published": "2025-10-18T08:15:34.130",
        "references": [
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            "url": "https://git.kernel.org/stable/c/6ba7e73cafd155a5d3abf560d315f0bab2b9d89f"
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            "url": "https://git.kernel.org/stable/c/a6f68f219d4d4b92d7c781708d4afc4cc42961ec"
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            "url": "https://git.kernel.org/stable/c/feb946d2fc9dc754bf3d594d42cd228860ff8647"
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T01:28:48+00:00",
      "cve": "CVE-2025-40001",
      "id": "CVE-2025-40001",
      "initial_release_date": "2025-10-18T00:00:00+00:00",
      "product_status:known_affected": "42",
      "product_status:known_not_affected": "232",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: mvsas: Fix use-after-free bugs in mvs_work_queue",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40001.json",
      "version": "3"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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