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CVE-2026-64592

Estado: RecibidaSin puntuar—

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

riscv: mm: Unconditionally sfence.vma for spurious fault

Svvptc does not guarantee that it's safe to just return here. Since we have already cleared our bit, if, theoretically, the bounded timeframe for the accessed page to become valid still hasn't happened after sret, we could fault again and actually crash.

Hopefully, these spurious faults should be rare enough that this is an acceptable slowdown.

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-2026-64592",
  "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": "503638e0babf364061bc50fca5103b00a56cc50a",
              "lessThan": "c4df24702bfc3cd2bed7746b94dc6139a3fa5428",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "503638e0babf364061bc50fca5103b00a56cc50a",
              "lessThan": "4d730cab96e6b75e4a07c4baf37294ebc07f795e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "503638e0babf364061bc50fca5103b00a56cc50a",
              "lessThan": "ede985ff4b569ed2454024f8bb107a6729fe08aa",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "503638e0babf364061bc50fca5103b00a56cc50a",
              "lessThan": "1b2c6b56a9fa0dcbef461039937de22b1cbecc7d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/riscv/kernel/entry.S"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.12",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.96",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/riscv/kernel/entry.S"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-06T08:16:34.610",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1b2c6b56a9fa0dcbef461039937de22b1cbecc7d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4d730cab96e6b75e4a07c4baf37294ebc07f795e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c4df24702bfc3cd2bed7746b94dc6139a3fa5428",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ede985ff4b569ed2454024f8bb107a6729fe08aa",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: mm: Unconditionally sfence.vma for spurious fault\n\nSvvptc does not guarantee that it's safe to just return here. Since we\nhave already cleared our bit, if, theoretically, the bounded timeframe\nfor the accessed page to become valid still hasn't happened after sret,\nwe could fault again and actually crash.\n\nHopefully, these spurious faults should be rare enough that this is an\nacceptable slowdown."
    }
  ],
  "lastModified": "2026-08-17T05:18:05.647",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}