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CVE-2026-80689

Estado: RecibidaSin puntuar—

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

tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions

mmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into tr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map(). If these functions are invoked while mmio_trace_array is NULL (e.g. before initialization or after disabled), accessing tr->array_buffer.buffer will result in a NULL pointer dereference crash.

Fix this by adding an explicit NULL check for tr at the beginning of __trace_mmiotrace_rw() and __trace_mmiotrace_map().

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)

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{
  "id": "CVE-2026-80689",
  "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": "f984b51e0779a6dd30feedc41404013ca54e5d05",
              "lessThan": "dc1b1a057b3bb901f83433700e604fe0ae67c5f2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f984b51e0779a6dd30feedc41404013ca54e5d05",
              "lessThan": "6aee2d478545c089dd5d055d3c9f0c7ea034fb80",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f984b51e0779a6dd30feedc41404013ca54e5d05",
              "lessThan": "4e4ab09db7899d7f2d2293a18adf0fa200a27e73",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f984b51e0779a6dd30feedc41404013ca54e5d05",
              "lessThan": "2df964d141270c40f07547b0c2e0a51e2573d46d",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "876014b4eeb927146430e7591cf959a7ceb8d64a",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "a20a0010eb6485f60cd64e15ebc85a4bd388642e",
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            {
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              "lessThan": "12b80cdbc54cf615b4717a4e8180063408091ea2",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "kernel/trace/trace_mmiotrace.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.27"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.27",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.103",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "kernel/trace/trace_mmiotrace.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-28T08:16:54.390",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/12b80cdbc54cf615b4717a4e8180063408091ea2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2df964d141270c40f07547b0c2e0a51e2573d46d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4e4ab09db7899d7f2d2293a18adf0fa200a27e73",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/60234845142fddb27db89ebc00a65178421fb3a4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6aee2d478545c089dd5d055d3c9f0c7ea034fb80",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/876014b4eeb927146430e7591cf959a7ceb8d64a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a20a0010eb6485f60cd64e15ebc85a4bd388642e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dc1b1a057b3bb901f83433700e604fe0ae67c5f2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions\n\nmmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into\ntr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map().\nIf these functions are invoked while mmio_trace_array is NULL (e.g. before\ninitialization or after disabled), accessing tr->array_buffer.buffer will\nresult in a NULL pointer dereference crash.\n\nFix this by adding an explicit NULL check for tr at the beginning of\n__trace_mmiotrace_rw() and __trace_mmiotrace_map()."
    }
  ],
  "lastModified": "2026-09-14T13:18:48.357",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}