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CVE-2024-56568 (GCVE-0-2024-56568)

Vulnerability from cvelistv5 – Published: 2024-12-27 14:23 – Updated: 2026-05-11 20:54
VLAI
Title
iommu/arm-smmu: Defer probe of clients after smmu device bound
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Defer probe of clients after smmu device bound Null pointer dereference occurs due to a race between smmu driver probe and client driver probe, when of_dma_configure() for client is called after the iommu_device_register() for smmu driver probe has executed but before the driver_bound() for smmu driver has been called. Following is how the race occurs: T1:Smmu device probe T2: Client device probe really_probe() arm_smmu_device_probe() iommu_device_register() really_probe() platform_dma_configure() of_dma_configure() of_dma_configure_id() of_iommu_configure() iommu_probe_device() iommu_init_device() arm_smmu_probe_device() arm_smmu_get_by_fwnode() driver_find_device_by_fwnode() driver_find_device() next_device() klist_next() /* null ptr assigned to smmu */ /* null ptr dereference while smmu->streamid_mask */ driver_bound() klist_add_tail() When this null smmu pointer is dereferenced later in arm_smmu_probe_device, the device crashes. Fix this by deferring the probe of the client device until the smmu device has bound to the arm smmu driver. [will: Add comment]
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 20:02 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 021bb8420d44cf56102d44fca9af628625e75482 , < c2527d07c7e9cda2c6165d5edccf74752baac1b0 (git)
Affected: 021bb8420d44cf56102d44fca9af628625e75482 , < dc02407ea952e20c544a078a6be2e6f008327973 (git)
Affected: 021bb8420d44cf56102d44fca9af628625e75482 , < f8f794f387ad21c4696e5cd0626cb6f8a5f6aea5 (git)
Affected: 021bb8420d44cf56102d44fca9af628625e75482 , < 4a9485918a042e3114890dfbe19839a1897f8b2c (git)
Affected: 021bb8420d44cf56102d44fca9af628625e75482 , < 5018696b19bc6c021e934a8a59f4b1dd8c0ac9f8 (git)
Affected: 021bb8420d44cf56102d44fca9af628625e75482 , < 229e6ee43d2a160a1592b83aad620d6027084aad (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.9
Unaffected: 0 , < 4.9 (semver)
Unaffected: 5.10.231 , ≤ 5.10.* (semver)
Unaffected: 5.15.174 , ≤ 5.15.* (semver)
Unaffected: 6.1.120 , ≤ 6.1.* (semver)
Unaffected: 6.6.66 , ≤ 6.6.* (semver)
Unaffected: 6.12.4 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu: Defer probe of clients after smmu device bound\n\nNull pointer dereference occurs due to a race between smmu\ndriver probe and client driver probe, when of_dma_configure()\nfor client is called after the iommu_device_register() for smmu driver\nprobe has executed but before the driver_bound() for smmu driver\nhas been called.\n\nFollowing is how the race occurs:\n\nT1:Smmu device probe\t\tT2: Client device probe\n\nreally_probe()\narm_smmu_device_probe()\niommu_device_register()\n\t\t\t\t\treally_probe()\n\t\t\t\t\tplatform_dma_configure()\n\t\t\t\t\tof_dma_configure()\n\t\t\t\t\tof_dma_configure_id()\n\t\t\t\t\tof_iommu_configure()\n\t\t\t\t\tiommu_probe_device()\n\t\t\t\t\tiommu_init_device()\n\t\t\t\t\tarm_smmu_probe_device()\n\t\t\t\t\tarm_smmu_get_by_fwnode()\n\t\t\t\t\t\tdriver_find_device_by_fwnode()\n\t\t\t\t\t\tdriver_find_device()\n\t\t\t\t\t\tnext_device()\n\t\t\t\t\t\tklist_next()\n\t\t\t\t\t\t    /* null ptr\n\t\t\t\t\t\t       assigned to smmu */\n\t\t\t\t\t/* null ptr dereference\n\t\t\t\t\t   while smmu-\u003estreamid_mask */\ndriver_bound()\n\tklist_add_tail()\n\nWhen this null smmu pointer is dereferenced later in\narm_smmu_probe_device, the device crashes.\n\nFix this by deferring the probe of the client device\nuntil the smmu device has bound to the arm smmu driver.\n\n[will: Add comment]"
        }
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    "datePublished": "2024-12-27T14:23:11.733Z",
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    "dateUpdated": "2026-05-11T20:54:57.262Z",
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      "epss": "0.00162",
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu/arm-smmu: Defer probe of clients after smmu device bound\\n\\nNull pointer dereference occurs due to a race between smmu\\ndriver probe and client driver probe, when of_dma_configure()\\nfor client is called after the iommu_device_register() for smmu driver\\nprobe has executed but before the driver_bound() for smmu driver\\nhas been called.\\n\\nFollowing is how the race occurs:\\n\\nT1:Smmu device probe\\t\\tT2: Client device probe\\n\\nreally_probe()\\narm_smmu_device_probe()\\niommu_device_register()\\n\\t\\t\\t\\t\\treally_probe()\\n\\t\\t\\t\\t\\tplatform_dma_configure()\\n\\t\\t\\t\\t\\tof_dma_configure()\\n\\t\\t\\t\\t\\tof_dma_configure_id()\\n\\t\\t\\t\\t\\tof_iommu_configure()\\n\\t\\t\\t\\t\\tiommu_probe_device()\\n\\t\\t\\t\\t\\tiommu_init_device()\\n\\t\\t\\t\\t\\tarm_smmu_probe_device()\\n\\t\\t\\t\\t\\tarm_smmu_get_by_fwnode()\\n\\t\\t\\t\\t\\t\\tdriver_find_device_by_fwnode()\\n\\t\\t\\t\\t\\t\\tdriver_find_device()\\n\\t\\t\\t\\t\\t\\tnext_device()\\n\\t\\t\\t\\t\\t\\tklist_next()\\n\\t\\t\\t\\t\\t\\t    /* null ptr\\n\\t\\t\\t\\t\\t\\t       assigned to smmu */\\n\\t\\t\\t\\t\\t/* null ptr dereference\\n\\t\\t\\t\\t\\t   while smmu-\u003estreamid_mask */\\ndriver_bound()\\n\\tklist_add_tail()\\n\\nWhen this null smmu pointer is dereferenced later in\\narm_smmu_probe_device, the device crashes.\\n\\nFix this by deferring the probe of the client device\\nuntil the smmu device has bound to the arm smmu driver.\\n\\n[will: Add comment]\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/arm-smmu: Aplazar la sonda de los clientes despu\\u00e9s del l\\u00edmite del dispositivo smmu. Se produce una desreferencia de puntero nulo debido a una ejecuci\\u00f3n entre la sonda del controlador smmu y la sonda del controlador del cliente, cuando se llama a of_dma_configure() para el cliente despu\\u00e9s de que se haya ejecutado la sonda iommu_device_register() para el controlador smmu pero antes de que se haya llamado a driver_bound() para el controlador smmu. A continuaci\\u00f3n se muestra c\\u00f3mo se produce la ejecuci\\u00f3n: T1: sonda de dispositivo Smmu T2: sonda de dispositivo cliente really_probe() arm_smmu_device_probe() iommu_device_register() really_probe() platform_dma_configure() of_dma_configure() of_dma_configure_id() of_iommu_configure() iommu_probe_device() iommu_init_device() arm_smmu_probe_device() arm_smmu_get_by_fwnode() driver_find_device_by_fwnode() driver_find_device() next_device() klist_next() /* puntero nulo asignado a smmu */ /* desreferencia de puntero nulo mientras smmu-\u0026gt;streamid_mask */ driver_bound() klist_add_tail() Cuando este puntero smmu nulo se desreferencia m\\u00e1s adelante arm_smmu_probe_device, el dispositivo falla. Para solucionar este problema, postergue la prueba del dispositivo cliente hasta que el dispositivo smmu se haya vinculado al controlador smmu de arm. [will: Agregar comentario]\"}]",
      "id": "CVE-2024-56568",
      "lastModified": "2024-12-27T15:15:15.733",
      "published": "2024-12-27T15:15:15.733",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/229e6ee43d2a160a1592b83aad620d6027084aad\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/4a9485918a042e3114890dfbe19839a1897f8b2c\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/5018696b19bc6c021e934a8a59f4b1dd8c0ac9f8\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/c2527d07c7e9cda2c6165d5edccf74752baac1b0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/dc02407ea952e20c544a078a6be2e6f008327973\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/f8f794f387ad21c4696e5cd0626cb6f8a5f6aea5\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "microsoft_vex": {
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      "cve": "CVE-2024-56568",
      "id": "msrc_CVE-2024-56568",
      "initial_release_date": "2024-12-02T00:00:00.000Z",
      "product_status:fixed": "4",
      "product_status:known_affected": "4",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "iommu/arm-smmu: Defer probe of clients after smmu device bound",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-56568.json",
      "version": "2"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56568\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T15:15:15.733\",\"lastModified\":\"2026-06-17T08:12:26.023\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu/arm-smmu: Defer probe of clients after smmu device bound\\n\\nNull pointer dereference occurs due to a race between smmu\\ndriver probe and client driver probe, when of_dma_configure()\\nfor client is called after the iommu_device_register() for smmu driver\\nprobe has executed but before the driver_bound() for smmu driver\\nhas been called.\\n\\nFollowing is how the race occurs:\\n\\nT1:Smmu device probe\\t\\tT2: Client device probe\\n\\nreally_probe()\\narm_smmu_device_probe()\\niommu_device_register()\\n\\t\\t\\t\\t\\treally_probe()\\n\\t\\t\\t\\t\\tplatform_dma_configure()\\n\\t\\t\\t\\t\\tof_dma_configure()\\n\\t\\t\\t\\t\\tof_dma_configure_id()\\n\\t\\t\\t\\t\\tof_iommu_configure()\\n\\t\\t\\t\\t\\tiommu_probe_device()\\n\\t\\t\\t\\t\\tiommu_init_device()\\n\\t\\t\\t\\t\\tarm_smmu_probe_device()\\n\\t\\t\\t\\t\\tarm_smmu_get_by_fwnode()\\n\\t\\t\\t\\t\\t\\tdriver_find_device_by_fwnode()\\n\\t\\t\\t\\t\\t\\tdriver_find_device()\\n\\t\\t\\t\\t\\t\\tnext_device()\\n\\t\\t\\t\\t\\t\\tklist_next()\\n\\t\\t\\t\\t\\t\\t    /* null ptr\\n\\t\\t\\t\\t\\t\\t       assigned to smmu */\\n\\t\\t\\t\\t\\t/* null ptr dereference\\n\\t\\t\\t\\t\\t   while smmu-\u003estreamid_mask */\\ndriver_bound()\\n\\tklist_add_tail()\\n\\nWhen this null smmu pointer is dereferenced later in\\narm_smmu_probe_device, the device crashes.\\n\\nFix this by deferring the probe of the client device\\nuntil the smmu device has bound to the arm smmu driver.\\n\\n[will: Add comment]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/arm-smmu: Aplazar la sonda de los clientes despu\u00e9s del l\u00edmite del dispositivo smmu. Se produce una desreferencia de puntero nulo debido a una ejecuci\u00f3n entre la sonda del controlador smmu y la sonda del controlador del cliente, cuando se llama a of_dma_configure() para el cliente despu\u00e9s de que se haya ejecutado la sonda iommu_device_register() para el controlador smmu pero antes de que se haya llamado a driver_bound() para el controlador smmu. A continuaci\u00f3n se muestra c\u00f3mo se produce la ejecuci\u00f3n: T1: sonda de dispositivo Smmu T2: sonda de dispositivo cliente really_probe() arm_smmu_device_probe() iommu_device_register() really_probe() platform_dma_configure() of_dma_configure() of_dma_configure_id() of_iommu_configure() iommu_probe_device() iommu_init_device() arm_smmu_probe_device() arm_smmu_get_by_fwnode() driver_find_device_by_fwnode() driver_find_device() next_device() klist_next() /* puntero nulo asignado a smmu */ /* desreferencia de puntero nulo mientras smmu-\u0026gt;streamid_mask */ driver_bound() klist_add_tail() Cuando este puntero smmu nulo se desreferencia m\u00e1s adelante arm_smmu_probe_device, el dispositivo falla. Para solucionar este problema, postergue la prueba del dispositivo cliente hasta que el dispositivo smmu se haya vinculado al controlador smmu de arm. [will: Agregar comentario]\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/iommu/arm/arm-smmu/arm-smmu.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"021bb8420d44cf56102d44fca9af628625e75482\",\"lessThan\":\"c2527d07c7e9cda2c6165d5edccf74752baac1b0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"021bb8420d44cf56102d44fca9af628625e75482\",\"lessThan\":\"dc02407ea952e20c544a078a6be2e6f008327973\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"021bb8420d44cf56102d44fca9af628625e75482\",\"lessThan\":\"f8f794f387ad21c4696e5cd0626cb6f8a5f6aea5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"021bb8420d44cf56102d44fca9af628625e75482\",\"lessThan\":\"4a9485918a042e3114890dfbe19839a1897f8b2c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"021bb8420d44cf56102d44fca9af628625e75482\",\"lessThan\":\"5018696b19bc6c021e934a8a59f4b1dd8c0ac9f8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"021bb8420d44cf56102d44fca9af628625e75482\",\"lessThan\":\"229e6ee43d2a160a1592b83aad620d6027084aad\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/iommu/arm/arm-smmu/arm-smmu.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.231\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.174\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.120\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.66\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.4\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T20:02:09.885077Z\",\"id\":\"CVE-2024-56568\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"},{\"lang\":\"en\",\"value\":\"CWE-476\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.9\",\"versionEndExcluding\":\"5.10.231\",\"matchCriteriaId\":\"537EAA44-2DDC-42D8-9CC2-B08934999CBE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.174\",\"matchCriteriaId\":\"419FD073-1517-4FD5-8158-F94BC68A1E89\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.120\",\"matchCriteriaId\":\"09AC6122-E2A4-40FE-9D33-268A1B2EC265\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.66\",\"matchCriteriaId\":\"29A976AD-B9AB-4A95-9F08-7669F8847EB9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.4\",\"matchCriteriaId\":\"04756810-D093-4B43-B1D9-CF5035968061\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/229e6ee43d2a160a1592b83aad620d6027084aad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4a9485918a042e3114890dfbe19839a1897f8b2c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5018696b19bc6c021e934a8a59f4b1dd8c0ac9f8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c2527d07c7e9cda2c6165d5edccf74752baac1b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dc02407ea952e20c544a078a6be2e6f008327973\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f8f794f387ad21c4696e5cd0626cb6f8a5f6aea5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T13:53:55+00:00",
      "cve": "CVE-2024-56568",
      "id": "CVE-2024-56568",
      "initial_release_date": "2024-12-27T00:00:00+00:00",
      "product_status:known_affected": "156",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iommu/arm-smmu: Defer probe of clients after smmu device bound",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56568.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-16T00:21:26Z",
      "cve": "CVE-2024-56568",
      "id": "CVE-2024-56568",
      "initial_release_date": "2024-12-28T03:48:42Z",
      "product_status:known_affected": "777",
      "product_status:known_not_affected": "134",
      "product_status:recommended": "360",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-56568",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-56568.json",
      "version": "113"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T20:49:37.672Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.7, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-56568\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T20:02:09.885077Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T15:41:37.064Z\"}}], \"cna\": {\"title\": \"iommu/arm-smmu: Defer probe of clients after smmu device bound\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"021bb8420d44cf56102d44fca9af628625e75482\", \"lessThan\": \"c2527d07c7e9cda2c6165d5edccf74752baac1b0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"021bb8420d44cf56102d44fca9af628625e75482\", \"lessThan\": \"dc02407ea952e20c544a078a6be2e6f008327973\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"021bb8420d44cf56102d44fca9af628625e75482\", \"lessThan\": \"f8f794f387ad21c4696e5cd0626cb6f8a5f6aea5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"021bb8420d44cf56102d44fca9af628625e75482\", \"lessThan\": \"4a9485918a042e3114890dfbe19839a1897f8b2c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"021bb8420d44cf56102d44fca9af628625e75482\", \"lessThan\": \"5018696b19bc6c021e934a8a59f4b1dd8c0ac9f8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"021bb8420d44cf56102d44fca9af628625e75482\", \"lessThan\": \"229e6ee43d2a160a1592b83aad620d6027084aad\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/iommu/arm/arm-smmu/arm-smmu.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.9\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.9\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.231\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.174\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.120\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.66\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/iommu/arm/arm-smmu/arm-smmu.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/c2527d07c7e9cda2c6165d5edccf74752baac1b0\"}, {\"url\": \"https://git.kernel.org/stable/c/dc02407ea952e20c544a078a6be2e6f008327973\"}, {\"url\": \"https://git.kernel.org/stable/c/f8f794f387ad21c4696e5cd0626cb6f8a5f6aea5\"}, {\"url\": \"https://git.kernel.org/stable/c/4a9485918a042e3114890dfbe19839a1897f8b2c\"}, {\"url\": \"https://git.kernel.org/stable/c/5018696b19bc6c021e934a8a59f4b1dd8c0ac9f8\"}, {\"url\": \"https://git.kernel.org/stable/c/229e6ee43d2a160a1592b83aad620d6027084aad\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu/arm-smmu: Defer probe of clients after smmu device bound\\n\\nNull pointer dereference occurs due to a race between smmu\\ndriver probe and client driver probe, when of_dma_configure()\\nfor client is called after the iommu_device_register() for smmu driver\\nprobe has executed but before the driver_bound() for smmu driver\\nhas been called.\\n\\nFollowing is how the race occurs:\\n\\nT1:Smmu device probe\\t\\tT2: Client device probe\\n\\nreally_probe()\\narm_smmu_device_probe()\\niommu_device_register()\\n\\t\\t\\t\\t\\treally_probe()\\n\\t\\t\\t\\t\\tplatform_dma_configure()\\n\\t\\t\\t\\t\\tof_dma_configure()\\n\\t\\t\\t\\t\\tof_dma_configure_id()\\n\\t\\t\\t\\t\\tof_iommu_configure()\\n\\t\\t\\t\\t\\tiommu_probe_device()\\n\\t\\t\\t\\t\\tiommu_init_device()\\n\\t\\t\\t\\t\\tarm_smmu_probe_device()\\n\\t\\t\\t\\t\\tarm_smmu_get_by_fwnode()\\n\\t\\t\\t\\t\\t\\tdriver_find_device_by_fwnode()\\n\\t\\t\\t\\t\\t\\tdriver_find_device()\\n\\t\\t\\t\\t\\t\\tnext_device()\\n\\t\\t\\t\\t\\t\\tklist_next()\\n\\t\\t\\t\\t\\t\\t    /* null ptr\\n\\t\\t\\t\\t\\t\\t       assigned to smmu */\\n\\t\\t\\t\\t\\t/* null ptr dereference\\n\\t\\t\\t\\t\\t   while smmu-\u003estreamid_mask */\\ndriver_bound()\\n\\tklist_add_tail()\\n\\nWhen this null smmu pointer is dereferenced later in\\narm_smmu_probe_device, the device crashes.\\n\\nFix this by deferring the probe of the client device\\nuntil the smmu device has bound to the arm smmu driver.\\n\\n[will: Add comment]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.231\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.174\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.120\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.66\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.4\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13\", \"versionStartIncluding\": \"4.9\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:58:34.224Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-56568\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T20:49:37.672Z\", \"dateReserved\": \"2024-12-27T14:03:05.996Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-12-27T14:23:11.733Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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  • 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.


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