FKIE_CVE-2022-48939

Vulnerability from fkie_nvd - Published: 2024-08-22 04:15 - Updated: 2024-08-22 19:02
Severity ?
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Add schedule points in batch ops syzbot reported various soft lockups caused by bpf batch operations. INFO: task kworker/1:1:27 blocked for more than 140 seconds. INFO: task hung in rcu_barrier Nothing prevents batch ops to process huge amount of data, we need to add schedule points in them. Note that maybe_wait_bpf_programs(map) calls from generic_map_delete_batch() can be factorized by moving the call after the loop. This will be done later in -next tree once we get this fix merged, unless there is strong opinion doing this optimization sooner.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8628f489b749a4f9767991631921dbe3fbcdc784Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Add schedule points in batch ops\n\nsyzbot reported various soft lockups caused by bpf batch operations.\n\n INFO: task kworker/1:1:27 blocked for more than 140 seconds.\n INFO: task hung in rcu_barrier\n\nNothing prevents batch ops to process huge amount of data,\nwe need to add schedule points in them.\n\nNote that maybe_wait_bpf_programs(map) calls from\ngeneric_map_delete_batch() can be factorized by moving\nthe call after the loop.\n\nThis will be done later in -next tree once we get this fix merged,\nunless there is strong opinion doing this optimization sooner."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: bpf: agregar puntos de programaci\u00f3n en operaciones por lotes syzbot inform\u00f3 varios bloqueos suaves causados por operaciones por lotes de bpf. INFORMACI\u00d3N: tarea kworker/1:1:27 bloqueada durante m\u00e1s de 140 segundos. INFORMACI\u00d3N: tarea colgada en rcu_barrier Nada impide que las operaciones por lotes procesen una gran cantidad de datos, necesitamos agregar puntos de programaci\u00f3n en ellas. Tenga en cuenta que las llamadas de Maybe_wait_bpf_programs(map) desde generic_map_delete_batch() se pueden factorizar moviendo la llamada despu\u00e9s del ciclo. Esto se har\u00e1 m\u00e1s adelante en el \u00e1rbol siguiente una vez que combinemos esta soluci\u00f3n, a menos que haya una opini\u00f3n firme sobre realizar esta optimizaci\u00f3n antes."
    }
  ],
  "id": "CVE-2022-48939",
  "lastModified": "2024-08-22T19:02:08.770",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "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:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-08-22T04:15:17.843",
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  "vulnStatus": "Analyzed",
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          "value": "CWE-834"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}


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