FKIE_CVE-2024-41007

Vulnerability from fkie_nvd - Published: 2024-07-15 09:15 - Updated: 2025-11-03 22:17
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: tcp: avoid too many retransmit packets If a TCP socket is using TCP_USER_TIMEOUT, and the other peer retracted its window to zero, tcp_retransmit_timer() can retransmit a packet every two jiffies (2 ms for HZ=1000), for about 4 minutes after TCP_USER_TIMEOUT has 'expired'. The fix is to make sure tcp_rtx_probe0_timed_out() takes icsk->icsk_user_timeout into account. Before blamed commit, the socket would not timeout after icsk->icsk_user_timeout, but would use standard exponential backoff for the retransmits. Also worth noting that before commit e89688e3e978 ("net: tcp: fix unexcepted socket die when snd_wnd is 0"), the issue would last 2 minutes instead of 4.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/04317a2471c2f637b4c49cbd0e9c0d04a519f570Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5d7e64d70a11d988553a08239c810a658e841982Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/66cb64a1d2239cd0309f9b5038b05462570a5be1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7bb7670f92bfbd05fc41a8f9a8f358b7ffed65f4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/97a9063518f198ec0adb2ecb89789de342bb8283Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d2346fca5bed130dc712f276ac63450201d52969Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfcdd7f89e401d2c6616be90c76c2fac3fa98fdePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e113cddefa27bbf5a79f72387b8fbd432a61a466Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/04317a2471c2f637b4c49cbd0e9c0d04a519f570Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5d7e64d70a11d988553a08239c810a658e841982Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/66cb64a1d2239cd0309f9b5038b05462570a5be1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7bb7670f92bfbd05fc41a8f9a8f358b7ffed65f4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/97a9063518f198ec0adb2ecb89789de342bb8283Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d2346fca5bed130dc712f276ac63450201d52969Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/dfcdd7f89e401d2c6616be90c76c2fac3fa98fdePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e113cddefa27bbf5a79f72387b8fbd432a61a466Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "configurations": [
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: avoid too many retransmit packets\n\nIf a TCP socket is using TCP_USER_TIMEOUT, and the other peer\nretracted its window to zero, tcp_retransmit_timer() can\nretransmit a packet every two jiffies (2 ms for HZ=1000),\nfor about 4 minutes after TCP_USER_TIMEOUT has \u0027expired\u0027.\n\nThe fix is to make sure tcp_rtx_probe0_timed_out() takes\nicsk-\u003eicsk_user_timeout into account.\n\nBefore blamed commit, the socket would not timeout after\nicsk-\u003eicsk_user_timeout, but would use standard exponential\nbackoff for the retransmits.\n\nAlso worth noting that before commit e89688e3e978 (\"net: tcp:\nfix unexcepted socket die when snd_wnd is 0\"), the issue\nwould last 2 minutes instead of 4."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tcp: evitar demasiados paquetes de retransmisi\u00f3n Si un socket TCP est\u00e1 usando TCP_USER_TIMEOUT y el otro par retrajo su ventana a cero, tcp_retransmit_timer() puede retransmitir un paquete cada dos santiam\u00e9n (2 ms). para HZ=1000), durante aproximadamente 4 minutos despu\u00e9s de que TCP_USER_TIMEOUT haya \u0027expirado\u0027. La soluci\u00f3n es asegurarse de que tcp_rtx_probe0_timed_out() tenga en cuenta icsk-\u0026gt;icsk_user_timeout. Antes de el commit culpable, el socket no expiraba despu\u00e9s de icsk-\u0026gt;icsk_user_timeout, sino que usaba un retroceso exponencial est\u00e1ndar para las retransmisiones. Tambi\u00e9n vale la pena se\u00f1alar que antes de commit e89688e3e978 (\"net: tcp: fix unexcepted socket die cuando snd_wnd es 0\"), el problema durar\u00eda 2 minutos en lugar de 4."
    }
  ],
  "id": "CVE-2024-41007",
  "lastModified": "2025-11-03T22:17:22.727",
  "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"
      }
    ]
  },
  "published": "2024-07-15T09:15:02.803",
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      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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