CVE-2024-56684

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-56684", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T15:00:39.846Z", "datePublished": "2024-12-28T09:46:11.932Z", "dateUpdated": "2026-08-05T11:46:03.800Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:46:03.800Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mtk-cmdq: fix wrong use of sizeof in cmdq_get_clocks()\n\nIt should be size of the struct clk_bulk_data, not data pointer pass to\ndevm_kcalloc()."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The defect is in the MediaTek CMDQ mailbox platform driver's probe path (`cmdq_probe()` \u2192 `cmdq_get_clocks()`), reachable only on the local system when the driver binds to its DT node; there is no remote or network-facing path into this code.\nAC:L - The undersized `devm_kcalloc()` is exactly half the required size on every supported platform (gce_num 1 or 2, all arm64), so the out-of-bounds write occurs deterministically on every probe with no timing, layout, or state condition to win.\nPR:N - The heap corruption happens unconditionally during driver probe at boot on affected MediaTek SoCs, requiring no privileges or attacker interaction whatsoever; this matches the scoring of the equivalent probe-time allocation-size CVEs (CVE-2025-39869, CVE-2026-43274).\nUI:N - No victim action is needed \u2014 the driver probes automatically at boot on matching hardware, and the out-of-bounds reads recur on every runtime-resume and interrupt without any user involvement.\nS:U - The corruption is confined to kernel heap memory managed by the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The half-sized array is subsequently read out of bounds by `clk_bulk_prepare()`/`clk_bulk_enable()`/`clk_bulk_unprepare()`, pulling a `struct clk *` from adjacent heap and dereferencing it; combined with the overlapping heap write this constitutes memory corruption leverageable for kernel memory disclosure.\nI:H - This is an out-of-bounds heap write of up to 16 bytes of pointer values (`clk_bulk_data.id` and `.clk`) past the end of the devres allocation, corrupting adjacent kernel objects \u2014 an OOB write is scored High.\nA:H - Corrupting the adjacent heap object and later dereferencing an out-of-bounds `struct clk *` in `clk_prepare()`/`clk_enable()` readily produces an oops or panic, and the overflow is flagged as slab-out-of-bounds under KASAN/SLUB redzoning."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mailbox/mtk-cmdq-mailbox.c"], "versions": [{"version": "aa1609f571caba0db102c611829d48adf226bb70", "lessThan": "31986fad0cfdda8d8893230da04f5eb0774854d9", "status": "affected", "versionType": "git"}, {"version": "aa1609f571caba0db102c611829d48adf226bb70", "lessThan": "a9c7cb960fc6e056ebecebd136a127612b15630d", "status": "affected", "versionType": "git"}, {"version": "aa1609f571caba0db102c611829d48adf226bb70", "lessThan": "271ee263cc8771982809185007181ca10346fe73", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mailbox/mtk-cmdq-mailbox.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.11", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.2", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.11.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.12.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/31986fad0cfdda8d8893230da04f5eb0774854d9"}, {"url": "https://git.kernel.org/stable/c/a9c7cb960fc6e056ebecebd136a127612b15630d"}, {"url": "https://git.kernel.org/stable/c/271ee263cc8771982809185007181ca10346fe73"}], "title": "mailbox: mtk-cmdq: fix wrong use of sizeof in cmdq_get_clocks()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/mailbox/mtk-cmdq-mailbox.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "31986fad0cfdda8d8893230da04f5eb0774854d9", "status": "affected", "version": "aa1609f571caba0db102c611829d48adf226bb70", "versionType": "git"}, {"lessThan": "a9c7cb960fc6e056ebecebd136a127612b15630d", "status": "affected", "version": "aa1609f571caba0db102c611829d48adf226bb70", "versionType": "git"}, {"lessThan": "271ee263cc8771982809185007181ca10346fe73", "status": "affected", "version": "aa1609f571caba0db102c611829d48adf226bb70", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/mailbox/mtk-cmdq-mailbox.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.11"}, {"lessThan": "6.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.11.*", "status": "unaffected", "version": "6.11.11", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.13", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "07BE5DA1-4C04-4052-9B58-6EDE15469D65", "versionEndExcluding": "6.11.11", "versionStartIncluding": "6.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D8882B1B-2ABC-4838-AC1D-DBDBB5764776", "versionEndExcluding": "6.12.2", "versionStartIncluding": "6.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mtk-cmdq: fix wrong use of sizeof in cmdq_get_clocks()\n\nIt should be size of the struct clk_bulk_data, not data pointer pass to\ndevm_kcalloc()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: buz\u00f3n: mtk-cmdq: corrige el uso incorrecto de sizeof en cmdq_get_clocks(). Debe ser el tama\u00f1o de la estructura clk_bulk_data, no el puntero de datos pasado a devm_kcalloc()."}], "id": "CVE-2024-56684", "lastModified": "2026-08-04T11:22:21.093", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-12-28T10:15:11.267", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/271ee263cc8771982809185007181ca10346fe73"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/31986fad0cfdda8d8893230da04f5eb0774854d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a9c7cb960fc6e056ebecebd136a127612b15630d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: mailbox: mtk-cmdq: fix wrong use of sizeof in cmdq_get_clocks()", "id": "2334682", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334682"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmailbox: mtk-cmdq: fix wrong use of sizeof in cmdq_get_clocks()\nIt should be size of the struct clk_bulk_data, not data pointer pass to\ndevm_kcalloc()."], "name": "CVE-2024-56684", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-12-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56684\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56684\nhttps://lore.kernel.org/linux-cve-announce/2024122833-CVE-2024-56684-55a3@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-13T11:32:03.923789+00:00", "updated": "2025-07-13T11:32:03.923844+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}