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CVE-2026-97961

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

perf/core: Allow list_del during perf_event_overflow()

A PMU might use perf_sched_cb_inc() and perf_sched_cb_dec() interface to get the PMU call back function pmu::sched_task invoked at schedule in and schedule out. This is achieved by walking along the list anchored by sched_cb_list.

The following scenario might lead to a list corruption.

This happens when ioctl(fd, PERF_EVENT_IOC_REFRESH, xxx) has been invoked and perf_event::event_limit hits zero.

Prevent the list corruption and convert for_each_list_entry() to for_each_list_entry_safe().

Detalles técnicos trazas, registros y código del informe original
   perf_pmu_sched_task()
      for_each_list_entry(..., &sched_cb_list)
      +--> __perf_pmu_sched_task()
           +--> event->pmu->sched_task())
                +--> PMU_push_sample()
                     +--> perf_event_overflow()
                          +--> __perf_event_overflow()
                               +--> pmu->stop()
                                    +--> perf_sched_cb_dec()
                                         remove entry from sched_cb_list
                                         while list node in use.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-97961",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "bd27568117664b8b3e259721393df420ed51f57b",
              "lessThan": "723e85fb2c3bcd237ac02cbd69502ed62ce0068c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bd27568117664b8b3e259721393df420ed51f57b",
              "lessThan": "6d0b9ce3be221c9077653f3670d60d66bb725ee2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bd27568117664b8b3e259721393df420ed51f57b",
              "lessThan": "e2770c76a02452fddb52e9e05c7ed6acfef06c32",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bd27568117664b8b3e259721393df420ed51f57b",
              "lessThan": "59e63416f5153e7d58652c616fbdcb7d5e01fff7",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "kernel/events/core.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "kernel/events/core.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-25T11:17:23.860",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/59e63416f5153e7d58652c616fbdcb7d5e01fff7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6d0b9ce3be221c9077653f3670d60d66bb725ee2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/723e85fb2c3bcd237ac02cbd69502ed62ce0068c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e2770c76a02452fddb52e9e05c7ed6acfef06c32",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/core: Allow list_del during perf_event_overflow()\n\nA PMU might use perf_sched_cb_inc() and perf_sched_cb_dec()\ninterface to get the PMU call back function pmu::sched_task\ninvoked at schedule in and schedule out. This is achieved\nby walking along the list anchored by sched_cb_list.\n\nThe following scenario might lead to a list corruption.\n\n   perf_pmu_sched_task()\n      for_each_list_entry(..., &sched_cb_list)\n      +--> __perf_pmu_sched_task()\n           +--> event->pmu->sched_task())\n                +--> PMU_push_sample()\n                     +--> perf_event_overflow()\n                          +--> __perf_event_overflow()\n                               +--> pmu->stop()\n                                    +--> perf_sched_cb_dec()\n                                         remove entry from sched_cb_list\n                                         while list node in use.\n\nThis happens when ioctl(fd, PERF_EVENT_IOC_REFRESH, xxx) has been\ninvoked and perf_event::event_limit hits zero.\n\nPrevent the list corruption and convert for_each_list_entry()\nto for_each_list_entry_safe()."
    }
  ],
  "lastModified": "2026-09-25T11:17:23.860",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}