CVE-2026-90122 (GCVE-0-2026-90122)
Vulnerability from cvelistv5
Published
2026-09-17 16:06
Modified
2026-10-19 08:58
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: clk: visconti: Make sure clk_init_data is fully initialized The clk_init_data structure contains several mutually-exclusive members for different methods to specify the possible parents of a clock, prompting drivers to initialize only the members they need. However, not initializing all members may cause subtle issues, which are only exposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is enabled. visconti_clk_register_gate() fills in init.parent_data, and assumes that init.parent_names is NULL. However, the latter in uninitialized, and thus may cause a crash. Make sure all members are fully initialized, to fix such bugs, and to avoid future breakage when converting drivers to a different method for specifying the parents.
References
Impacted products
Vendor Product Version
Linux Linux Version: b4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa
Version: b4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa
Version: b4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa
Version: b4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa
Version: b4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa
Version: b4cbe606dc3674b25cb661e7cd1a1c6ddaaafaaa
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/visconti/clkc.c"
          ],
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "0",
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              "version": "6.1.188",
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
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            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
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              "version": "7.2.6",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: visconti: Make sure clk_init_data is fully initialized\n\nThe clk_init_data structure contains several mutually-exclusive members\nfor different methods to specify the possible parents of a clock,\nprompting drivers to initialize only the members they need.  However,\nnot initializing all members may cause subtle issues, which are only\nexposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is\nenabled.\n\nvisconti_clk_register_gate() fills in init.parent_data, and assumes that\ninit.parent_names is NULL.  However, the latter in uninitialized, and\nthus may cause a crash.\n\nMake sure all members are fully initialized, to fix such bugs, and to\navoid future breakage when converting drivers to a different method for\nspecifying the parents."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:58:20.601Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0e97c22b286e1918c6f48bad7e77fb8240a24b4a"
        },
        {
          "url": "https://git.kernel.org/stable/c/9f756f1965bad65e6066608f33c36988cd10302a"
        },
        {
          "url": "https://git.kernel.org/stable/c/1cc0539e5b0906bace15d3fc7347b344a017cc02"
        },
        {
          "url": "https://git.kernel.org/stable/c/8f7980033e9f7ecaaecd873a0b5bf6b6c87d7e5a"
        },
        {
          "url": "https://git.kernel.org/stable/c/5ecfa72e74c6e2a765fa5bc1da574e5beae588f2"
        },
        {
          "url": "https://git.kernel.org/stable/c/39c0e6c844a14945040cca4ccf6997792ab764c4"
        }
      ],
      "title": "clk: visconti: Make sure clk_init_data is fully initialized",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90122",
    "datePublished": "2026-09-17T16:06:25.910Z",
    "dateReserved": "2026-09-11T19:38:34.788Z",
    "dateUpdated": "2026-10-19T08:58:20.601Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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