FKIE_CVE-2026-98825

Vulnerability from fkie_nvd - Published: 2026-10-18 16:17 - Updated: 2026-10-30 13:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: rtc: mpfs: fix unchecked devm_clk_get() error pointer in probe() devm_clk_get(&pdev->dev, "rtcref")'s return value was passed straight into clk_get_rate() without checking it for an error first, unlike the "rtc" clock a few lines above which is correctly checked with IS_ERR(). clk_get_rate() only guards against a NULL clk, not an error pointer: if (!clk) return 0; ... rate = clk_core_get_rate_recalc(clk->core); so if devm_clk_get() ever returns an error pointer here (for example ERR_PTR(-EPROBE_DEFER), which is the normal, expected outcome if the clkcfg clock-provider this RTC depends on has not registered its clocks yet by the time this driver probes), clk_get_rate() dereferences that error pointer instead of returning 0, crashing instead of letting probe defer. Capture the clock in the existing 'clk' local and check it with IS_ERR() before calling clk_get_rate(), matching the handling already used for the "rtc" clock in this same function.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74dc7c52946e3d47c40edd0875adb7cc15937066
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7f59e824a4403e156cf930fe556b75139452099e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8a03f8422fa08eed335c51bccb612a3d81739ff2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ab741d1b714b4acc605f3d14cdc4120f87341ed1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ac41b05d15db3134e839148290d67415ee0bdb58
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cfd70c9b19846c524f2b6195a7484bdf22071ccf
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/rtc/rtc-mpfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7f59e824a4403e156cf930fe556b75139452099e",
              "status": "affected",
              "version": "0b31d703598dc1993867597bbd45e87d824fc427",
              "versionType": "git"
            },
            {
              "lessThan": "ab741d1b714b4acc605f3d14cdc4120f87341ed1",
              "status": "affected",
              "version": "0b31d703598dc1993867597bbd45e87d824fc427",
              "versionType": "git"
            },
            {
              "lessThan": "74dc7c52946e3d47c40edd0875adb7cc15937066",
              "status": "affected",
              "version": "0b31d703598dc1993867597bbd45e87d824fc427",
              "versionType": "git"
            },
            {
              "lessThan": "cfd70c9b19846c524f2b6195a7484bdf22071ccf",
              "status": "affected",
              "version": "0b31d703598dc1993867597bbd45e87d824fc427",
              "versionType": "git"
            },
            {
              "lessThan": "8a03f8422fa08eed335c51bccb612a3d81739ff2",
              "status": "affected",
              "version": "0b31d703598dc1993867597bbd45e87d824fc427",
              "versionType": "git"
            },
            {
              "lessThan": "ac41b05d15db3134e839148290d67415ee0bdb58",
              "status": "affected",
              "version": "0b31d703598dc1993867597bbd45e87d824fc427",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/rtc/rtc-mpfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "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\nrtc: mpfs: fix unchecked devm_clk_get() error pointer in probe()\n\ndevm_clk_get(\u0026pdev-\u003edev, \"rtcref\")\u0027s return value was passed straight\ninto clk_get_rate() without checking it for an error first, unlike the\n\"rtc\" clock a few lines above which is correctly checked with\nIS_ERR(). clk_get_rate() only guards against a NULL clk, not an error\npointer:\n\n\tif (!clk)\n\t\treturn 0;\n\t...\n\trate = clk_core_get_rate_recalc(clk-\u003ecore);\n\nso if devm_clk_get() ever returns an error pointer here (for example\nERR_PTR(-EPROBE_DEFER), which is the normal, expected outcome if the\nclkcfg clock-provider this RTC depends on has not registered its\nclocks yet by the time this driver probes), clk_get_rate() dereferences\nthat error pointer instead of returning 0, crashing instead of letting\nprobe defer.\n\nCapture the clock in the existing \u0027clk\u0027 local and check it with\nIS_ERR() before calling clk_get_rate(), matching the handling already\nused for the \"rtc\" clock in this same function."
    }
  ],
  "id": "CVE-2026-98825",
  "lastModified": "2026-10-30T13:21:29.290",
  "metrics": {},
  "published": "2026-10-18T16:17:36.720",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/74dc7c52946e3d47c40edd0875adb7cc15937066"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7f59e824a4403e156cf930fe556b75139452099e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8a03f8422fa08eed335c51bccb612a3d81739ff2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ab741d1b714b4acc605f3d14cdc4120f87341ed1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ac41b05d15db3134e839148290d67415ee0bdb58"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cfd70c9b19846c524f2b6195a7484bdf22071ccf"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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