FKIE_CVE-2026-23245

Vulnerability from fkie_nvd - Published: 2026-03-18 11:16 - Updated: 2026-04-18 09:16
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net/sched: act_gate: snapshot parameters with RCU on replace The gate action can be replaced while the hrtimer callback or dump path is walking the schedule list. Convert the parameters to an RCU-protected snapshot and swap updates under tcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits the entry list, preserve the existing schedule so the effective state is unchanged.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/035d0d09d5ab3ed3e93d18cde2b562a6719eea23
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8b1251bbf0f10ac745ed74bad4d3b433caa1eeae
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc98fd8d214693be91253d9a88cdf8e5e143d124
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_gate: snapshot parameters with RCU on replace\n\nThe gate action can be replaced while the hrtimer callback or dump path is\nwalking the schedule list.\n\nConvert the parameters to an RCU-protected snapshot and swap updates under\ntcf_lock, freeing the previous snapshot via call_rcu(). When REPLACE omits\nthe entry list, preserve the existing schedule so the effective state is\nunchanged."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet/sched: act_gate: instant\u00e1nea de par\u00e1metros con RCU al reemplazar\n\nLa acci\u00f3n de puerta puede ser reemplazada mientras la devoluci\u00f3n de llamada de hrtimer o la ruta de volcado est\u00e1 recorriendo la lista de programaci\u00f3n.\n\nConvertir los par\u00e1metros a una instant\u00e1nea protegida por RCU e intercambiar actualizaciones bajo tcf_lock, liberando la instant\u00e1nea anterior mediante call_rcu(). Cuando REPLACE omite la lista de entradas, preservar la programaci\u00f3n existente para que el estado efectivo permanezca inalterado."
    }
  ],
  "id": "CVE-2026-23245",
  "lastModified": "2026-04-18T09:16:14.877",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-18T11:16:16.437",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/035d0d09d5ab3ed3e93d18cde2b562a6719eea23"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/04d75529dc0f9be78786162ebab7424af4644df2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/58b162e318d0243ad2d7d92456c0873f2494c351"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/62413a9c3cb183afb9bb6e94dd68caf4e4145f4c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8b1251bbf0f10ac745ed74bad4d3b433caa1eeae"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dfc314d7c767e350f78a46a8f8b134f80e8ad432"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fc98fd8d214693be91253d9a88cdf8e5e143d124"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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