fkie_cve-2022-50007
Vulnerability from fkie_nvd
Published
2025-06-18 11:15
Modified
2025-11-14 16:59
Severity ?
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: xfrm: fix refcount leak in __xfrm_policy_check() The issue happens on an error path in __xfrm_policy_check(). When the fetching process of the object `pols[1]` fails, the function simply returns 0, forgetting to decrement the reference count of `pols[0]`, which is incremented earlier by either xfrm_sk_policy_lookup() or xfrm_policy_lookup(). This may result in memory leaks. Fix it by decreasing the reference count of `pols[0]` in that path.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0769491a8acd3e85ca4c3f65080eac2c824262dfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1305d7d4f35ca6f214a2d23b075aa6a924cff3bePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/18e6b6e2555c93f5ca09f2b85ef1fa025c8acceaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26ad2398fe4984f4f6f930bcb3bc9047fa77265bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/63da7a2bbf3f28094920e0b8a17d2571a9bd842dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f94b933103ee1bda119543369cc18a1be5536dbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9c9cb23e00ddf45679b21b4dacc11d1ae7961ebePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d66c052879791313f90c0584420f196a038fb8b8Patch
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 2.6.19
linux linux_kernel 2.6.19
linux linux_kernel 2.6.19
linux linux_kernel 2.6.19
linux linux_kernel 2.6.19
linux linux_kernel 2.6.19
linux linux_kernel 6.0
linux linux_kernel 6.0


To clipboard 

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  "descriptions": [
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: fix refcount leak in __xfrm_policy_check()\n\nThe issue happens on an error path in __xfrm_policy_check(). When the\nfetching process of the object `pols[1]` fails, the function simply\nreturns 0, forgetting to decrement the reference count of `pols[0]`,\nwhich is incremented earlier by either xfrm_sk_policy_lookup() or\nxfrm_policy_lookup(). This may result in memory leaks.\n\nFix it by decreasing the reference count of `pols[0]` in that path."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: xfrm: se corrige una fuga de referencias en __xfrm_policy_check(). El problema ocurre en una ruta de error en __xfrm_policy_check(). Cuando falla la obtenci\u00f3n del objeto `pols[1]`, la funci\u00f3n simplemente devuelve 0, olvidando decrementar el recuento de referencias de `pols[0]`, que se incrementa previamente mediante xfrm_sk_policy_lookup() o xfrm_policy_lookup(). Esto puede provocar fugas de memoria. Para solucionarlo, reduzca el recuento de referencias de `pols[0]` en esa ruta."
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  "id": "CVE-2022-50007",
  "lastModified": "2025-11-14T16:59:00.730",
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          "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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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2025-06-18T11:15:28.617",
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  "vulnStatus": "Analyzed",
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      "source": "nvd@nist.gov",
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}


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