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CVE-2026-68324

Estado: RecibidaSin puntuar—

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

iommu/intel: Fix out-of-bounds memset in dmar_latency_disable()

dmar_latency_disable() intends to zero out only the single latency_statistic entry for the given type, but the memset size was computed as sizeof(*lstat) * DMAR_LATENCY_NUM, which clears the entire array starting from &lstat[type].

When type > 0, this writes beyond the end of the allocated array, corrupting adjacent memory.

Fix by using sizeof(*lstat) to clear only the target entry.

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-2026-68324",
  "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": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e",
              "lessThan": "80f3605991461679c298ea2045c350ee3cf36de3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e",
              "lessThan": "104d89cf5b01cb66ff975d91ed42f61b3904df53",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e",
              "lessThan": "3078d82e7fe9048a2b90a992e71af7cd7ef881fa",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e",
              "lessThan": "866a35735e56b9dc81cbc33899255134adf6d8b3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e",
              "lessThan": "d06fea9b85f038690f55e72fe0c45e113715a85a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e",
              "lessThan": "0e28ca1c3204b51068579defc904a0dfba5e5c57",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e",
              "lessThan": "754f8efe45f87e3a9c6871b645b2f9d46d1b407b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/iommu/intel/perf.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.14",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/iommu/intel/perf.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:22.550",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0e28ca1c3204b51068579defc904a0dfba5e5c57",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/104d89cf5b01cb66ff975d91ed42f61b3904df53",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3078d82e7fe9048a2b90a992e71af7cd7ef881fa",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/754f8efe45f87e3a9c6871b645b2f9d46d1b407b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/80f3605991461679c298ea2045c350ee3cf36de3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/866a35735e56b9dc81cbc33899255134adf6d8b3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d06fea9b85f038690f55e72fe0c45e113715a85a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/intel: Fix out-of-bounds memset in dmar_latency_disable()\n\ndmar_latency_disable() intends to zero out only the single\nlatency_statistic entry for the given type, but the memset size was\ncomputed as sizeof(*lstat) * DMAR_LATENCY_NUM, which clears the entire\narray starting from &lstat[type].\n\nWhen type > 0, this writes beyond the end of the allocated array,\ncorrupting adjacent memory.\n\nFix by using sizeof(*lstat) to clear only the target entry."
    }
  ],
  "lastModified": "2026-08-19T17:20:42.567",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}