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rtc: mpfs: fix unchecked devm_clk_get() error pointer in probe()

Type: advisorySources: OSV

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.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.1.191, 6.12.113, 6.18.56, 6.6.160, 7.2.10
CVEs
CVE-2026-98825
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 02:24 UTC · Revision 1

Source evidence

rtc: mpfs: fix unchecked devm_clk_get() error pointer in probe()

core-osv · Original source

Published 18 Oct 2026, 15:49 UTC

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.

osv:CVE-2026-98825

Kernel

Fixed versions: 6.1.191, 6.6.160, 6.12.113, 6.18.56, 7.2.10

Complete source record
{
  "id": "fb0c095f18e35ab1fa97a9cc098afe6c3bd74a983969147328ffdade399036db",
  "url": "https://osv.dev/vulnerability/CVE-2026-98825",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "rtc: mpfs: fix unchecked devm_clk_get() error pointer in probe()",
    "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.",
    "evidence": "osv:CVE-2026-98825",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.191",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.160",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.113",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.56",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98825",
      "aliases": [
        "CVE-2026-98825"
      ],
      "affected": [
        {
          "ranges": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                },
                {
                  "fixed": "ab741d1b714b4acc605f3d14cdc4120f87341ed1"
                },
                {
                  "fixed": "74dc7c52946e3d47c40edd0875adb7cc15937066"
                },
                {
                  "fixed": "cfd70c9b19846c524f2b6195a7484bdf22071ccf"
                },
                {
                  "fixed": "8a03f8422fa08eed335c51bccb612a3d81739ff2"
                },
                {
                  "fixed": "ac41b05d15db3134e839148290d67415ee0bdb58"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98825.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.0.0"
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                {
                  "fixed": "6.1.191"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
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                {
                  "fixed": "6.6.160"
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            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.113"
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            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.56"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98825.json"
          }
        }
      ],
      "modified": "2026-11-01T02:30:36.067735744Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/74dc7c52946e3d47c40edd0875adb7cc15937066",
        "https://git.kernel.org/stable/c/7f59e824a4403e156cf930fe556b75139452099e",
        "https://git.kernel.org/stable/c/8a03f8422fa08eed335c51bccb612a3d81739ff2",
        "https://git.kernel.org/stable/c/ab741d1b714b4acc605f3d14cdc4120f87341ed1",
        "https://git.kernel.org/stable/c/ac41b05d15db3134e839148290d67415ee0bdb58",
        "https://git.kernel.org/stable/c/cfd70c9b19846c524f2b6195a7484bdf22071ccf",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98825.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98825",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98825.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98825",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499644,
  "published_at": "2026-10-18T15:49:17.605+00:00"
}