fkie_cve-2021-47486
Vulnerability from fkie_nvd
Published
2024-05-22 09:15
Modified
2024-11-21 06:36
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: riscv, bpf: Fix potential NULL dereference The bpf_jit_binary_free() function requires a non-NULL argument. When the RISC-V BPF JIT fails to converge in NR_JIT_ITERATIONS steps, jit_data->header will be NULL, which triggers a NULL dereference. Avoid this by checking the argument, prior calling the function.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv, bpf: Fix potential NULL dereference\n\nThe bpf_jit_binary_free() function requires a non-NULL argument. When\nthe RISC-V BPF JIT fails to converge in NR_JIT_ITERATIONS steps,\njit_data-\u003eheader will be NULL, which triggers a NULL\ndereference. Avoid this by checking the argument, prior calling the\nfunction."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: riscv, bpf: corrige una posible desreferencia NULL La funci\u00f3n bpf_jit_binary_free() requiere un argumento que no sea NULL. Cuando el JIT BPF de RISC-V no logra converger en los pasos NR_JIT_ITERATION, jit_data-\u0026gt;header ser\u00e1 NULL, lo que desencadena una desreferencia NULL. Evite esto verificando el argumento antes de llamar a la funci\u00f3n."
    }
  ],
  "id": "CVE-2021-47486",
  "lastModified": "2024-11-21T06:36:18.530",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-05-22T09:15:10.573",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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