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

Vulnerability from cvelistv5 – Published: 2024-06-25 14:25 – Updated: 2026-05-11 20:21
VLAI
Title
clk: bcm: dvp: Assign ->num before accessing ->hws
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
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
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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linux linux_kernel Affected: 6.6
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Affected: f316cdff8d67 , < 0dc913217fb7 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Affected: f316cdff8d67 , < a1dd92fca0d6 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Affected: f316cdff8d67 , < 9368cdf90f52 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 0 , < 6.6 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 6.6.34 , ≤ 6.7 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 6.9.5 , ≤ 6.10 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 6.10-rc1
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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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. .\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/clk/bcm/clk-bcm2711-dvp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f316cdff8d677db9ad9c90acb44c4cd535b0ee27\",\"lessThan\":\"0dc913217fb79096597005bba9ba738e2db5cd02\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f316cdff8d677db9ad9c90acb44c4cd535b0ee27\",\"lessThan\":\"a1dd92fca0d6b58b55ed0484f75d4205dbb77010\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f316cdff8d677db9ad9c90acb44c4cd535b0ee27\",\"lessThan\":\"9368cdf90f52a68120d039887ccff74ff33b4444\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/clk/bcm/clk-bcm2711-dvp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.6\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.6\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.34\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9.5\",\"lessThanOrEqual\":\"6.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"affectedData\":[{\"vendor\":\"linux\",\"product\":\"linux_kernel\",\"defaultStatus\":\"unknown\",\"cpes\":[\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"6.6\",\"status\":\"affected\"}]},{\"vendor\":\"linux\",\"product\":\"linux_kernel\",\"defaultStatus\":\"unknown\",\"cpes\":[\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"f316cdff8d67\",\"lessThan\":\"0dc913217fb7\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"linux\",\"product\":\"linux_kernel\",\"defaultStatus\":\"unknown\",\"cpes\":[\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"f316cdff8d67\",\"lessThan\":\"a1dd92fca0d6\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"linux\",\"product\":\"linux_kernel\",\"defaultStatus\":\"unknown\",\"cpes\":[\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"f316cdff8d67\",\"lessThan\":\"9368cdf90f52\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"linux\",\"product\":\"linux_kernel\",\"defaultStatus\":\"unknown\",\"cpes\":[\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"0\",\"lessThan\":\"6.6\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"linux\",\"product\":\"linux_kernel\",\"defaultStatus\":\"unknown\",\"cpes\":[\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"6.6.34\",\"lessThanOrEqual\":\"6.7\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"linux\",\"product\":\"linux_kernel\",\"defaultStatus\":\"unknown\",\"cpes\":[\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"6.9.5\",\"lessThanOrEqual\":\"6.10\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"linux\",\"product\":\"linux_kernel\",\"defaultStatus\":\"unknown\",\"cpes\":[\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"6.10-rc1\",\"status\":\"unaffected\"}]}]}],\"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}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-06-25T17:03:11.356077Z\",\"id\":\"CVE-2024-39462\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T14:38:40+00:00",
      "cve": "CVE-2024-39462",
      "id": "CVE-2024-39462",
      "initial_release_date": "2024-06-25T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: clk: bcm: dvp: Assign -\u0026gt;num before accessing -\u0026gt;hws",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-39462.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-10-07T00:21:28Z",
      "cve": "CVE-2024-39462",
      "id": "CVE-2024-39462",
      "initial_release_date": "2024-06-26T23:17:28Z",
      "product_status:known_not_affected": "271",
      "product_status:recommended": "59",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-39462",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-39462.json",
      "version": "18"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0dc913217fb79096597005bba9ba738e2db5cd02\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a1dd92fca0d6b58b55ed0484f75d4205dbb77010\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/9368cdf90f52a68120d039887ccff74ff33b4444\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T04:26:14.280Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 9.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", 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\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"f316cdff8d677db9ad9c90acb44c4cd535b0ee27\", \"lessThan\": \"0dc913217fb79096597005bba9ba738e2db5cd02\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f316cdff8d677db9ad9c90acb44c4cd535b0ee27\", \"lessThan\": \"a1dd92fca0d6b58b55ed0484f75d4205dbb77010\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f316cdff8d677db9ad9c90acb44c4cd535b0ee27\", \"lessThan\": \"9368cdf90f52a68120d039887ccff74ff33b4444\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/clk/bcm/clk-bcm2711-dvp.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.34\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/clk/bcm/clk-bcm2711-dvp.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0dc913217fb79096597005bba9ba738e2db5cd02\"}, {\"url\": \"https://git.kernel.org/stable/c/a1dd92fca0d6b58b55ed0484f75d4205dbb77010\"}, {\"url\": \"https://git.kernel.org/stable/c/9368cdf90f52a68120d039887ccff74ff33b4444\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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.\"}], \"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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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.