fkie_cve-2025-21904
Vulnerability from fkie_nvd
Published
2025-04-01 16:15
Modified
2025-11-03 20:17
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: caif_virtio: fix wrong pointer check in cfv_probe() del_vqs() frees virtqueues, therefore cfv->vq_tx pointer should be checked for NULL before calling it, not cfv->vdev. Also the current implementation is redundant because the pointer cfv->vdev is dereferenced before it is checked for NULL. Fix this by checking cfv->vq_tx for NULL instead of cfv->vdev before calling del_vqs().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/29e0cd296c87240278e2f7ea4cf3f496b60c03afPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/56cddf71cce3b15b078e937fadab29962b6f6643Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/597c27e5f04cb50e56cc9aeda75d3e42b6b89c3ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b5fe58959822e6cfa884327cabba6be3b01883dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e4e08ca4cc634b337bb74bc9a70758fdeda0bcbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90d302619ee7ce5ed0c69c29c290bdccfde66418Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/990fff6980d0c1693d60a812f58dbf93eab0473fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a466fd7e9fafd975949e5945e2f70c33a94b1a70Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14


To clipboard 

{
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncaif_virtio: fix wrong pointer check in cfv_probe()\n\ndel_vqs() frees virtqueues, therefore cfv-\u003evq_tx pointer should be checked\nfor NULL before calling it, not cfv-\u003evdev. Also the current implementation\nis redundant because the pointer cfv-\u003evdev is dereferenced before it is\nchecked for NULL.\n\nFix this by checking cfv-\u003evq_tx for NULL instead of cfv-\u003evdev before\ncalling del_vqs()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: caif_virtio: se corrige una comprobaci\u00f3n incorrecta del puntero en cfv_probe() del_vqs() libera colas virtuales. Por lo tanto, se debe comprobar si el puntero cfv-\u0026gt;vq_tx es nulo antes de llamarlo, no cfv-\u0026gt;vdev. Adem\u00e1s, la implementaci\u00f3n actual es redundante porque se desreferencia el puntero cfv-\u0026gt;vdev antes de comprobar si es nulo. Para solucionar esto, compruebe si el puntero cfv-\u0026gt;vq_tx es nulo en lugar de cfv-\u0026gt;vdev antes de llamar a del_vqs()."
    }
  ],
  "id": "CVE-2025-21904",
  "lastModified": "2025-11-03T20:17:25.947",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
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  "published": "2025-04-01T16:15:20.857",
  "references": [
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    {
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    },
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
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          "lang": "en",
          "value": "CWE-476"
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      "source": "nvd@nist.gov",
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
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  ]
}


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