fkie_cve-2022-48872
Vulnerability from fkie_nvd
Published
2024-08-21 07:15
Modified
2024-09-06 14:30
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix use-after-free race condition for maps It is possible that in between calling fastrpc_map_get() until map->fl->lock is taken in fastrpc_free_map(), another thread can call fastrpc_map_lookup() and get a reference to a map that is about to be deleted. Rewrite fastrpc_map_get() to only increase the reference count of a map if it's non-zero. Propagate this to callers so they can know if a map is about to be deleted. Fixes this warning: refcount_t: addition on 0; use-after-free. WARNING: CPU: 5 PID: 10100 at lib/refcount.c:25 refcount_warn_saturate ... Call trace: refcount_warn_saturate [fastrpc_map_get inlined] [fastrpc_map_lookup inlined] fastrpc_map_create fastrpc_internal_invoke fastrpc_device_ioctl __arm64_sys_ioctl invoke_syscall
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/079c78c68714f7d8d58e66c477b0243b31806907Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/556dfdb226ce1e5231d8836159b23f8bb0395bf4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/61a0890cb95afec5c8a2f4a879de2b6220984ef1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/96b328d119eca7563c1edcc4e1039a62e6370ecbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b171d0d2cf1b8387c72c8d325c5d5746fa271e39Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Fix use-after-free race condition for maps\n\nIt is possible that in between calling fastrpc_map_get() until\nmap-\u003efl-\u003elock is taken in fastrpc_free_map(), another thread can call\nfastrpc_map_lookup() and get a reference to a map that is about to be\ndeleted.\n\nRewrite fastrpc_map_get() to only increase the reference count of a map\nif it\u0027s non-zero. Propagate this to callers so they can know if a map is\nabout to be deleted.\n\nFixes this warning:\nrefcount_t: addition on 0; use-after-free.\nWARNING: CPU: 5 PID: 10100 at lib/refcount.c:25 refcount_warn_saturate\n...\nCall trace:\n refcount_warn_saturate\n [fastrpc_map_get inlined]\n [fastrpc_map_lookup inlined]\n fastrpc_map_create\n fastrpc_internal_invoke\n fastrpc_device_ioctl\n __arm64_sys_ioctl\n invoke_syscall"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: misc: fastrpc: corrige la condici\u00f3n de ejecuci\u00f3n de use-after-free para mapas. Es posible que entre llamadas a fastrpc_map_get() hasta que se tome map-\u0026gt;fl-\u0026gt;lock en fastrpc_free_map() , otro hilo puede llamar a fastrpc_map_lookup() y obtener una referencia a un mapa que est\u00e1 a punto de ser eliminado. Vuelva a escribir fastrpc_map_get() para aumentar solo el recuento de referencias de un mapa si no es cero. Propague esto a las personas que llaman para que puedan saber si un mapa est\u00e1 a punto de ser eliminado. Corrige esta advertencia: refcount_t: adici\u00f3n en 0; use-after-free. ADVERTENCIA: CPU: 5 PID: 10100 en lib/refcount.c:25 refcount_warn_saturate... Rastreo de llamadas: refcount_warn_saturate [fastrpc_map_get inlined] [fastrpc_map_lookup inlined] fastrpc_map_create fastrpc_internal_invoke fastrpc_device_ioctl __arm64_sys_ioctl invoke_sy llamar"
    }
  ],
  "id": "CVE-2022-48872",
  "lastModified": "2024-09-06T14:30:06.730",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-08-21T07:15:04.267",
  "references": [
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}


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