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FKIE_CVE-2023-54324

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-06-17 06:47
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: dm: fix a race condition in retrieve_deps There's a race condition in the multipath target when retrieve_deps races with multipath_message calling dm_get_device and dm_put_device. retrieve_deps walks the list of open devices without holding any lock but multipath may add or remove devices to the list while it is running. The end result may be memory corruption or use-after-free memory access. See this description of a UAF with multipath_message(): https://listman.redhat.com/archives/dm-devel/2022-October/052373.html Fix this bug by introducing a new rw semaphore "devices_lock". We grab devices_lock for read in retrieve_deps and we grab it for write in dm_get_device and dm_put_device.
Impacted products
Vendor Product Version

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/dm-core.h",
            "drivers/md/dm-ioctl.c",
            "drivers/md/dm-table.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "dbf1a719850577bb51fc7512a3972994b797a17b",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "38f6e5ae5d9ff4a4050ea6f7b543d5d5a4e087cf",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "f6007dce0cd35d634d9be91ef3515a6385dcee16",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/dm-core.h",
            "drivers/md/dm-ioctl.c",
            "drivers/md/dm-table.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "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\ndm: fix a race condition in retrieve_deps\n\nThere\u0027s a race condition in the multipath target when retrieve_deps\nraces with multipath_message calling dm_get_device and dm_put_device.\nretrieve_deps walks the list of open devices without holding any lock\nbut multipath may add or remove devices to the list while it is\nrunning. The end result may be memory corruption or use-after-free\nmemory access.\n\nSee this description of a UAF with multipath_message():\nhttps://listman.redhat.com/archives/dm-devel/2022-October/052373.html\n\nFix this bug by introducing a new rw semaphore \"devices_lock\". We grab\ndevices_lock for read in retrieve_deps and we grab it for write in\ndm_get_device and dm_put_device."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:\n\ndm: corrige una condici\u00f3n de carrera en retrieve_deps\n\nExiste una condici\u00f3n de carrera en el objetivo multipath cuando retrieve_deps entra en condici\u00f3n de carrera con multipath_message al llamar a dm_get_device y dm_put_device. retrieve_deps recorre la lista de dispositivos abiertos sin mantener ning\u00fan bloqueo, pero multipath puede a\u00f1adir o eliminar dispositivos de la lista mientras se est\u00e1 ejecutando. El resultado final puede ser corrupci\u00f3n de memoria o acceso a memoria de uso despu\u00e9s de liberaci\u00f3n.\n\nConsulte esta descripci\u00f3n de un uso despu\u00e9s de liberaci\u00f3n con multipath_message():\nhttps://listman.redhat.com/archives/dm-devel/2022-October/052373.html\n\nCorrige este error mediante la introducci\u00f3n de un nuevo sem\u00e1foro rw \u0027devices_lock\u0027. Adquirimos \u0027devices_lock\u0027 para lectura en retrieve_deps y lo adquirimos para escritura en dm_get_device y dm_put_device."
    }
  ],
  "id": "CVE-2023-54324",
  "lastModified": "2026-06-17T06:47:13.727",
  "metrics": {},
  "published": "2025-12-30T13:16:21.733",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/38f6e5ae5d9ff4a4050ea6f7b543d5d5a4e087cf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dbf1a719850577bb51fc7512a3972994b797a17b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f6007dce0cd35d634d9be91ef3515a6385dcee16"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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