fkie_cve-2024-43890
Vulnerability from fkie_nvd
Published
2024-08-26 11:15
Modified
2024-09-05 18:48
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: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing "tracing_map->max_size" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to "tracing_map->next_elt" once it reaches "tracing_map->max_elt".
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/236bb4690773ab6869b40bedc7bc8d889e36f9d6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/302ceb625d7b990db205a15e371f9a71238de91cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/788ea62499b3c18541fd6d621964d8fafbc4aec5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a172c7b22bc2feaf489cfc6d6865f7237134fdf8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bcf86c01ca4676316557dd482c8416ece8c2e143Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cd10d186a5409a1fe6e976df82858e9773a698daPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3e4dbc2858fe85d1dbd2e72a9fc5dea988b5c18Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb223bf01e688dfe37e813c8988ee11c8c9f8d0aPatch
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 6.11
linux linux_kernel 6.11


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix overflow in get_free_elt()\n\n\"tracing_map-\u003enext_elt\" in get_free_elt() is at risk of overflowing.\n\nOnce it overflows, new elements can still be inserted into the tracing_map\neven though the maximum number of elements (`max_elts`) has been reached.\nContinuing to insert elements after the overflow could result in the\ntracing_map containing \"tracing_map-\u003emax_size\" elements, leaving no empty\nentries.\nIf any attempt is made to insert an element into a full tracing_map using\n`__tracing_map_insert()`, it will cause an infinite loop with preemption\ndisabled, leading to a CPU hang problem.\n\nFix this by preventing any further increments to \"tracing_map-\u003enext_elt\"\nonce it reaches \"tracing_map-\u003emax_elt\"."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rastreo: corrige el desbordamiento en get_free_elt() \"tracing_map-\u0026gt;next_elt\" en get_free_elt() corre el riesgo de desbordarse. Una vez que se desborda, a\u00fan se pueden insertar nuevos elementos en tracing_map aunque se haya alcanzado el n\u00famero m\u00e1ximo de elementos (`max_elts`). Continuar insertando elementos despu\u00e9s del desbordamiento podr\u00eda dar como resultado que tracing_map contenga elementos \"tracing_map-\u0026gt;max_size\", sin dejar entradas vac\u00edas. Si se intenta insertar un elemento en un tracing_map completo usando `__tracing_map_insert()`, se producir\u00e1 un bucle infinito con la preferencia deshabilitada, lo que provocar\u00e1 un problema de bloqueo de la CPU. Solucione este problema evitando incrementos adicionales en \"tracing_map-\u0026gt;next_elt\" una vez que llegue a \"tracing_map-\u0026gt;max_elt\"."
    }
  ],
  "id": "CVE-2024-43890",
  "lastModified": "2024-09-05T18:48:30.320",
  "metrics": {
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        "cvssData": {
          "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": "2024-08-26T11:15:04.040",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "nvd@nist.gov",
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}


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