fkie_cve-2025-22005
Vulnerability from fkie_nvd
Published
2025-04-03 08:15
Modified
2025-04-10 16:09
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: ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw(). fib_check_nh_v6_gw() expects that fib6_nh_init() cleans up everything when it fails. Commit 7dd73168e273 ("ipv6: Always allocate pcpu memory in a fib6_nh") moved fib_nh_common_init() before alloc_percpu_gfp() within fib6_nh_init() but forgot to add cleanup for fib6_nh->nh_common.nhc_pcpu_rth_output in case it fails to allocate fib6_nh->rt6i_pcpu, resulting in memleak. Let's call fib_nh_common_release() and clear nhc_pcpu_rth_output in the error path. Note that we can remove the fib6_nh_release() call in nh_create_ipv6() later in net-next.git.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/119dcafe36795a15ae53351cbbd6177aaf94ffefPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/16267a5036173d0173377545b4b6021b081d0933Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1bd12dfc058e1e68759d313d7727d68dbc1b8964Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/29d91820184d5cbc70f3246d4911d96eaeb930d6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/596a883c4ce2d2e9c175f25b98fed3a1f33fea38Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77c41cdbe6bce476e08d3251c0d501feaf10a9f3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9740890ee20e01f99ff1dde84c63dcf089fabb98Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3d5b4b5ae263c3225db363ba08b937e2e2b0380Patch
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 6.14
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
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\nipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().\n\nfib_check_nh_v6_gw() expects that fib6_nh_init() cleans up everything\nwhen it fails.\n\nCommit 7dd73168e273 (\"ipv6: Always allocate pcpu memory in a fib6_nh\")\nmoved fib_nh_common_init() before alloc_percpu_gfp() within fib6_nh_init()\nbut forgot to add cleanup for fib6_nh-\u003enh_common.nhc_pcpu_rth_output in\ncase it fails to allocate fib6_nh-\u003ert6i_pcpu, resulting in memleak.\n\nLet\u0027s call fib_nh_common_release() and clear nhc_pcpu_rth_output in the\nerror path.\n\nNote that we can remove the fib6_nh_release() call in nh_create_ipv6()\nlater in net-next.git."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv6: Se corrigi\u00f3 la fuga de memoria de nhc_pcpu_rth_output en fib_check_nh_v6_gw(). fib_check_nh_v6_gw() espera que fib6_nh_init() limpie todo cuando falla. El commit 7dd73168e273 (\"ipv6: Asignar siempre memoria pcpu en un fib6_nh\") movi\u00f3 fib_nh_common_init() antes de alloc_percpu_gfp() dentro de fib6_nh_init(), pero olvid\u00f3 a\u00f1adir la limpieza para fib6_nh-\u0026gt;nh_common.nhc_pcpu_rth_output en caso de que no se asigne fib6_nh-\u0026gt;rt6i_pcpu, lo que resulta en una fuga de memoria. Invoquemos fib_nh_common_release() y borremos nhc_pcpu_rth_output en la ruta de error. Tenga en cuenta que podemos eliminar la llamada a fib6_nh_release() en nh_create_ipv6() m\u00e1s adelante en net-next.git."
    }
  ],
  "id": "CVE-2025-22005",
  "lastModified": "2025-04-10T16:09:50.650",
  "metrics": {
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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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2025-04-03T08:15:16.087",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
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}


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