FKIE_CVE-2024-47668

Vulnerability from fkie_nvd - Published: 2024-10-09 15:15 - Updated: 2025-11-03 23:16
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc() If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later. If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f078f8ca93b28a34e20bd050f12cd4efeee7c0fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f27f4f445390cb7f73d4209cb2bf32834dc53daPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/99418ec776a39609f50934720419e0b464ca2283Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ad5ee9feebc2eb8cfc76ed74a2d6e55343b0e169Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b2f11c6f3e1fc60742673b8675c95b78447f3daePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d942e855324a60107025c116245095632476613ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ebeff038744c498a036e7a92eb8e433ae0a386d7Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.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 6.11
linux linux_kernel 6.11
linux linux_kernel 6.11
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()\n\nIf we need to increase the tree depth, allocate a new node, and then\nrace with another thread that increased the tree depth before us, we\u0027ll\nstill have a preallocated node that might be used later.\n\nIf we then use that node for a new non-root node, it\u0027ll still have a\npointer to the old root instead of being zeroed - fix this by zeroing it\nin the cmpxchg failure path."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: lib/generic-radix-tree.c: Se corrige una ejecuci\u00f3n poco frecuente en __genradix_ptr_alloc() Si necesitamos aumentar la profundidad del \u00e1rbol, asignar un nuevo nodo y luego competir con otro hilo que aument\u00f3 la profundidad del \u00e1rbol antes que nosotros, a\u00fan tendremos un nodo preasignado que podr\u00eda usarse m\u00e1s adelante. Si luego usamos ese nodo para un nuevo nodo que no sea ra\u00edz, a\u00fan tendr\u00e1 un puntero a la ra\u00edz anterior en lugar de estar a cero: solucione esto poni\u00e9ndolo a cero en la ruta de falla cmpxchg."
    }
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  "id": "CVE-2024-47668",
  "lastModified": "2025-11-03T23:16:14.593",
  "metrics": {
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          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.0,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-10-09T15:15:15.513",
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
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}


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  • 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.
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Detection rules are retrieved from Rulezet.