FKIE_CVE-2025-68746

Vulnerability from fkie_nvd - Published: 2025-12-24 13:16 - Updated: 2026-10-16 15:16
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: spi: tegra210-quad: Fix timeout handling When the CPU that the QSPI interrupt handler runs on (typically CPU 0) is excessively busy, it can lead to rare cases of the IRQ thread not running before the transfer timeout is reached. While handling the timeouts, any pending transfers are cleaned up and the message that they correspond to is marked as failed, which leaves the curr_xfer field pointing at stale memory. To avoid this, clear curr_xfer to NULL upon timeout and check for this condition when the IRQ thread is finally run. While at it, also make sure to clear interrupts on failure so that new interrupts can be run. A better, more involved, fix would move the interrupt clearing into a hard IRQ handler. Ideally we would also want to signal that the IRQ thread no longer needs to be run after the timeout is hit to avoid the extra check for a valid transfer.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/01bbf25c767219b14c3235bfa85906b8d2cb8fbc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/551060efb156c50fe33799038ba8145418cfdeef
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/83309dd551cfd60a5a1a98d9cab19f435b44d46d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/88db8bb7ed1bb474618acdf05ebd4f0758d244e2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4e002d8a7cee3b1d70efad0e222567f92a73000
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bb0c58be84f907285af45657c1d4847b960a12bf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c934e40246da2c5726d14e94719c514e30840df8
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/spi/spi-tegra210-quad.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "88db8bb7ed1bb474618acdf05ebd4f0758d244e2",
              "status": "affected",
              "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb",
              "versionType": "git"
            },
            {
              "lessThan": "83309dd551cfd60a5a1a98d9cab19f435b44d46d",
              "status": "affected",
              "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb",
              "versionType": "git"
            },
            {
              "lessThan": "c934e40246da2c5726d14e94719c514e30840df8",
              "status": "affected",
              "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb",
              "versionType": "git"
            },
            {
              "lessThan": "551060efb156c50fe33799038ba8145418cfdeef",
              "status": "affected",
              "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb",
              "versionType": "git"
            },
            {
              "lessThan": "bb0c58be84f907285af45657c1d4847b960a12bf",
              "status": "affected",
              "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb",
              "versionType": "git"
            },
            {
              "lessThan": "01bbf25c767219b14c3235bfa85906b8d2cb8fbc",
              "status": "affected",
              "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb",
              "versionType": "git"
            },
            {
              "lessThan": "b4e002d8a7cee3b1d70efad0e222567f92a73000",
              "status": "affected",
              "version": "921fc1838fb036f690b8ba52e6a6d3644b475cbb",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/spi/spi-tegra210-quad.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.198",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: tegra210-quad: Fix timeout handling\n\nWhen the CPU that the QSPI interrupt handler runs on (typically CPU 0)\nis excessively busy, it can lead to rare cases of the IRQ thread not\nrunning before the transfer timeout is reached.\n\nWhile handling the timeouts, any pending transfers are cleaned up and\nthe message that they correspond to is marked as failed, which leaves\nthe curr_xfer field pointing at stale memory.\n\nTo avoid this, clear curr_xfer to NULL upon timeout and check for this\ncondition when the IRQ thread is finally run.\n\nWhile at it, also make sure to clear interrupts on failure so that new\ninterrupts can be run.\n\nA better, more involved, fix would move the interrupt clearing into a\nhard IRQ handler. Ideally we would also want to signal that the IRQ\nthread no longer needs to be run after the timeout is hit to avoid the\nextra check for a valid transfer."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nspi: tegra210-quad: Correcci\u00f3n del manejo de tiempos de espera\n\nCuando la CPU en la que se ejecuta el manejador de interrupciones QSPI (t\u00edpicamente CPU 0) est\u00e1 excesivamente ocupada, puede dar lugar a casos raros en los que el hilo IRQ no se ejecute antes de que se alcance el tiempo de espera de la transferencia.\n\nMientras se manejan los tiempos de espera, cualquier transferencia pendiente se limpia y el mensaje al que corresponden se marca como fallido, lo que deja el campo curr_xfer apuntando a memoria obsoleta.\n\nPara evitar esto, borre curr_xfer a NULL al expirar el tiempo de espera y verifique esta condici\u00f3n cuando el hilo IRQ finalmente se ejecute.\n\nYa que estamos, aseg\u00farese tambi\u00e9n de borrar las interrupciones en caso de fallo para que se puedan ejecutar nuevas interrupciones.\n\nUna soluci\u00f3n mejor y m\u00e1s compleja mover\u00eda la limpieza de interrupciones a un manejador de IRQ de hardware. Idealmente, tambi\u00e9n querr\u00edamos se\u00f1alar que el hilo IRQ ya no necesita ejecutarse despu\u00e9s de que se alcance el tiempo de espera para evitar la comprobaci\u00f3n adicional de una transferencia v\u00e1lida."
    }
  ],
  "id": "CVE-2025-68746",
  "lastModified": "2026-10-16T15:16:52.790",
  "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-68746",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-16T15:05:04.392676Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-12-24T13:16:29.533",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/01bbf25c767219b14c3235bfa85906b8d2cb8fbc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/551060efb156c50fe33799038ba8145418cfdeef"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/83309dd551cfd60a5a1a98d9cab19f435b44d46d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/88db8bb7ed1bb474618acdf05ebd4f0758d244e2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b4e002d8a7cee3b1d70efad0e222567f92a73000"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bb0c58be84f907285af45657c1d4847b960a12bf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c934e40246da2c5726d14e94719c514e30840df8"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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