CVE-2024-39462 (GCVE-0-2024-39462)

Vulnerability from cvelistv5 – Published: 2024-06-25 14:25 – Updated: 2025-05-04 09:16
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: clk: bcm: dvp: Assign ->num before accessing ->hws Commit f316cdff8d67 ("clk: Annotate struct clk_hw_onecell_data with __counted_by") annotated the hws member of 'struct clk_hw_onecell_data' with __counted_by, which informs the bounds sanitizer about the number of elements in hws, so that it can warn when hws is accessed out of bounds. As noted in that change, the __counted_by member must be initialized with the number of elements before the first array access happens, otherwise there will be a warning from each access prior to the initialization because the number of elements is zero. This occurs in clk_dvp_probe() due to ->num being assigned after ->hws has been accessed: UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2 index 0 is out of range for type 'struct clk_hw *[] __counted_by(num)' (aka 'struct clk_hw *[]') Move the ->num initialization to before the first access of ->hws, which clears up the warning.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f316cdff8d677db9ad9c90acb44c4cd535b0ee27 , < 0dc913217fb79096597005bba9ba738e2db5cd02 (git)
Affected: f316cdff8d677db9ad9c90acb44c4cd535b0ee27 , < a1dd92fca0d6b58b55ed0484f75d4205dbb77010 (git)
Affected: f316cdff8d677db9ad9c90acb44c4cd535b0ee27 , < 9368cdf90f52a68120d039887ccff74ff33b4444 (git)
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    Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.34 , ≤ 6.6.* (semver)
Unaffected: 6.9.5 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nclk: bcm: dvp: Assign -\u003enum before accessing -\u003ehws\\n\\nCommit f316cdff8d67 (\\\"clk: Annotate struct clk_hw_onecell_data with\\n__counted_by\\\") annotated the hws member of \u0027struct clk_hw_onecell_data\u0027\\nwith __counted_by, which informs the bounds sanitizer about the number\\nof elements in hws, so that it can warn when hws is accessed out of\\nbounds. As noted in that change, the __counted_by member must be\\ninitialized with the number of elements before the first array access\\nhappens, otherwise there will be a warning from each access prior to the\\ninitialization because the number of elements is zero. This occurs in\\nclk_dvp_probe() due to -\u003enum being assigned after -\u003ehws has been\\naccessed:\\n\\n  UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2\\n  index 0 is out of range for type \u0027struct clk_hw *[] __counted_by(num)\u0027 (aka \u0027struct clk_hw *[]\u0027)\\n\\nMove the -\u003enum initialization to before the first access of -\u003ehws, which\\nclears up the warning.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: clk: bcm: dvp: Assign -\u0026gt;num before accessing -\u0026gt;hws Commit f316cdff8d67 (\\\"clk: Annotate struct clk_hw_onecell_data with __counted_by\\\") anot\\u00f3 el miembro hws de \u0027struct clk_hw_onecell_data\u0027 con __counted_by, que informa al sanitizante de los l\\u00edmites sobre la cantidad de elementos en hws, para que pueda advertir cuando se accede a hws fuera de los l\\u00edmites. Como se se\\u00f1al\\u00f3 en ese cambio, el miembro __counted_by debe inicializarse con la cantidad de elementos antes de que ocurra el primer acceso a la matriz; de lo contrario, habr\\u00e1 una advertencia de cada acceso antes de la inicializaci\\u00f3n porque la cantidad de elementos es cero. Esto ocurre en clk_dvp_probe() debido a que -\u0026gt;num se asigna despu\\u00e9s de que se haya accedido a -\u0026gt;hws: UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2 El \\u00edndice 0 est\\u00e1 fuera del rango para el tipo \u0027struct clk_hw *[] __counted_by(num)\u0027 (tambi\\u00e9n conocido como \u0027struct clk_hw *[]\u0027). Mueva la inicializaci\\u00f3n -\u0026gt;num antes del primer acceso de -\u0026gt;hws, lo que borra la advertencia. .\"}]",
      "id": "CVE-2024-39462",
      "lastModified": "2024-11-21T09:27:42.857",
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      "published": "2024-06-25T15:15:14.580",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-39462\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-25T15:15:14.580\",\"lastModified\":\"2025-03-24T17:24:09.577\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nclk: bcm: dvp: Assign -\u003enum before accessing -\u003ehws\\n\\nCommit f316cdff8d67 (\\\"clk: Annotate struct clk_hw_onecell_data with\\n__counted_by\\\") annotated the hws member of \u0027struct clk_hw_onecell_data\u0027\\nwith __counted_by, which informs the bounds sanitizer about the number\\nof elements in hws, so that it can warn when hws is accessed out of\\nbounds. As noted in that change, the __counted_by member must be\\ninitialized with the number of elements before the first array access\\nhappens, otherwise there will be a warning from each access prior to the\\ninitialization because the number of elements is zero. This occurs in\\nclk_dvp_probe() due to -\u003enum being assigned after -\u003ehws has been\\naccessed:\\n\\n  UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2\\n  index 0 is out of range for type \u0027struct clk_hw *[] __counted_by(num)\u0027 (aka \u0027struct clk_hw *[]\u0027)\\n\\nMove the -\u003enum initialization to before the first access of -\u003ehws, which\\nclears up the warning.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: clk: bcm: dvp: Assign -\u0026gt;num before accessing -\u0026gt;hws Commit f316cdff8d67 (\\\"clk: Annotate struct clk_hw_onecell_data with __counted_by\\\") anot\u00f3 el miembro hws de \u0027struct clk_hw_onecell_data\u0027 con __counted_by, que informa al sanitizante de los l\u00edmites sobre la cantidad de elementos en hws, para que pueda advertir cuando se accede a hws fuera de los l\u00edmites. Como se se\u00f1al\u00f3 en ese cambio, el miembro __counted_by debe inicializarse con la cantidad de elementos antes de que ocurra el primer acceso a la matriz; de lo contrario, habr\u00e1 una advertencia de cada acceso antes de la inicializaci\u00f3n porque la cantidad de elementos es cero. Esto ocurre en clk_dvp_probe() debido a que -\u0026gt;num se asigna despu\u00e9s de que se haya accedido a -\u0026gt;hws: UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2 El \u00edndice 0 est\u00e1 fuera del rango para el tipo \u0027struct clk_hw *[] __counted_by(num)\u0027 (tambi\u00e9n conocido como \u0027struct clk_hw *[]\u0027). Mueva la inicializaci\u00f3n -\u0026gt;num antes del primer acceso de -\u0026gt;hws, lo que borra la advertencia. .\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6\",\"versionEndExcluding\":\"6.6.34\",\"matchCriteriaId\":\"AC0C6E24-8240-425A-BD1A-F78E6D3A67FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.5\",\"matchCriteriaId\":\"8366481F-770F-4850-9D0F-2977BD97D5C5\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0dc913217fb79096597005bba9ba738e2db5cd02\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9368cdf90f52a68120d039887ccff74ff33b4444\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a1dd92fca0d6b58b55ed0484f75d4205dbb77010\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0dc913217fb79096597005bba9ba738e2db5cd02\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9368cdf90f52a68120d039887ccff74ff33b4444\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a1dd92fca0d6b58b55ed0484f75d4205dbb77010\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
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before accessing -\u003ehws\\n\\nCommit f316cdff8d67 (\\\"clk: Annotate struct clk_hw_onecell_data with\\n__counted_by\\\") annotated the hws member of \u0027struct clk_hw_onecell_data\u0027\\nwith __counted_by, which informs the bounds sanitizer about the number\\nof elements in hws, so that it can warn when hws is accessed out of\\nbounds. As noted in that change, the __counted_by member must be\\ninitialized with the number of elements before the first array access\\nhappens, otherwise there will be a warning from each access prior to the\\ninitialization because the number of elements is zero. This occurs in\\nclk_dvp_probe() due to -\u003enum being assigned after -\u003ehws has been\\naccessed:\\n\\n  UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2\\n  index 0 is out of range for type \u0027struct clk_hw *[] __counted_by(num)\u0027 (aka \u0027struct clk_hw *[]\u0027)\\n\\nMove the -\u003enum initialization to before the first access of -\u003ehws, which\\nclears up the warning.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.34\", \"versionStartIncluding\": \"6.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.5\", \"versionStartIncluding\": \"6.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"6.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:16:19.875Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-39462\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:16:19.875Z\", \"dateReserved\": \"2024-06-25T14:23:23.744Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-25T14:25:02.196Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.