fkie_cve-2022-49325
Vulnerability from fkie_nvd
Published
2025-02-26 07:01
Modified
2025-02-26 07:01
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tcp: add accessors to read/set tp->snd_cwnd We had various bugs over the years with code breaking the assumption that tp->snd_cwnd is greater than zero. Lately, syzbot reported the WARN_ON_ONCE(!tp->prior_cwnd) added in commit 8b8a321ff72c ("tcp: fix zero cwnd in tcp_cwnd_reduction") can trigger, and without a repro we would have to spend considerable time finding the bug. Instead of complaining too late, we want to catch where and when tp->snd_cwnd is set to an illegal value.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3308676ec525901bf1656014003c443a60730a04
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/40570375356c874b1578e05c1dcc3ff7c1322dbe
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/41e191fe72282e193a7744e2fc1786b23156c9e4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5aba0ad44fb4a7fb78c5076c313456de199a3c29
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: add accessors to read/set tp-\u003esnd_cwnd\n\nWe had various bugs over the years with code\nbreaking the assumption that tp-\u003esnd_cwnd is greater\nthan zero.\n\nLately, syzbot reported the WARN_ON_ONCE(!tp-\u003eprior_cwnd) added\nin commit 8b8a321ff72c (\"tcp: fix zero cwnd in tcp_cwnd_reduction\")\ncan trigger, and without a repro we would have to spend\nconsiderable time finding the bug.\n\nInstead of complaining too late, we want to catch where\nand when tp-\u003esnd_cwnd is set to an illegal value."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tcp: agregar descriptores de acceso para leer/establecer tp-\u0026gt;snd_cwnd Tuvimos varios errores a lo largo de los a\u00f1os con c\u00f3digo que romp\u00eda la suposici\u00f3n de que tp-\u0026gt;snd_cwnd es mayor que cero. \u00daltimamente, syzbot inform\u00f3 que se puede activar WARN_ON_ONCE(!tp-\u0026gt;prior_cwnd) agregado en el commit 8b8a321ff72c (\"tcp: corregir cwnd cero en tcp_cwnd_reduction\"), y sin una reproducci\u00f3n tendr\u00edamos que dedicar un tiempo considerable a encontrar el error. En lugar de quejarnos demasiado tarde, queremos detectar d\u00f3nde y cu\u00e1ndo tp-\u0026gt;snd_cwnd se establece en un valor ilegal."
    }
  ],
  "id": "CVE-2022-49325",
  "lastModified": "2025-02-26T07:01:09.323",
  "metrics": {},
  "published": "2025-02-26T07:01:09.323",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3308676ec525901bf1656014003c443a60730a04"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/40570375356c874b1578e05c1dcc3ff7c1322dbe"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/41e191fe72282e193a7744e2fc1786b23156c9e4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5aba0ad44fb4a7fb78c5076c313456de199a3c29"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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