fkie_cve-2024-27390
Vulnerability from fkie_nvd
Published
2024-05-01 13:15
Modified
2025-09-18 16:06
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: ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down() As discussed in the past (commit 2d3916f31891 ("ipv6: fix skb drops in igmp6_event_query() and igmp6_event_report()")) I think the synchronize_net() call in ipv6_mc_down() is not needed. Under load, synchronize_net() can last between 200 usec and 5 ms. KASAN seems to agree as well.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17ef8efc00b34918b966388b2af0993811895a8cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a03ede2282ebbd181bd6f5c38cbfcb5765afcd04Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/17ef8efc00b34918b966388b2af0993811895a8cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a03ede2282ebbd181bd6f5c38cbfcb5765afcd04Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down()\n\nAs discussed in the past (commit 2d3916f31891 (\"ipv6: fix skb drops\nin igmp6_event_query() and igmp6_event_report()\")) I think the\nsynchronize_net() call in ipv6_mc_down() is not needed.\n\nUnder load, synchronize_net() can last between 200 usec and 5 ms.\n\nKASAN seems to agree as well."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ipv6: mcast: elimina una barrera de sincronizaci\u00f3n_net() en ipv6_mc_down() Como se discuti\u00f3 en el pasado (commit 2d3916f31891 (\"ipv6: corrige ca\u00eddas de skb en igmp6_event_query() e igmp6_event_report()\" )) Creo que la llamada sincronizar_net() en ipv6_mc_down() no es necesaria. Bajo carga, sincronizar_net() puede durar entre 200 usos y 5 ms. KASAN parece estar de acuerdo tambi\u00e9n."
    }
  ],
  "id": "CVE-2024-27390",
  "lastModified": "2025-09-18T16:06:53.697",
  "metrics": {
    "cvssMetricV31": [
      {
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          "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"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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  "published": "2024-05-01T13:15:51.697",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "nvd@nist.gov",
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}


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