{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-56669", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T15:00:39.844Z", "datePublished": "2024-12-27T15:06:30.792Z", "dateUpdated": "2026-05-11T20:56:57.739Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:56:57.739Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Remove cache tags before disabling ATS\n\nThe current implementation removes cache tags after disabling ATS,\nleading to potential memory leaks and kernel crashes. Specifically,\nCACHE_TAG_DEVTLB type cache tags may still remain in the list even\nafter the domain is freed, causing a use-after-free condition.\n\nThis issue really shows up when multiple VFs from different PFs\npassed through to a single user-space process via vfio-pci. In such\ncases, the kernel may crash with kernel messages like:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000014\n PGD 19036a067 P4D 1940a3067 PUD 136c9b067 PMD 0\n Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 74 UID: 0 PID: 3183 Comm: testCli Not tainted 6.11.9 #2\n RIP: 0010:cache_tag_flush_range+0x9b/0x250\n Call Trace:\n <TASK>\n ? __die+0x1f/0x60\n ? page_fault_oops+0x163/0x590\n ? exc_page_fault+0x72/0x190\n ? asm_exc_page_fault+0x22/0x30\n ? cache_tag_flush_range+0x9b/0x250\n ? cache_tag_flush_range+0x5d/0x250\n intel_iommu_tlb_sync+0x29/0x40\n intel_iommu_unmap_pages+0xfe/0x160\n __iommu_unmap+0xd8/0x1a0\n vfio_unmap_unpin+0x182/0x340 [vfio_iommu_type1]\n vfio_remove_dma+0x2a/0xb0 [vfio_iommu_type1]\n vfio_iommu_type1_ioctl+0xafa/0x18e0 [vfio_iommu_type1]\n\nMove cache_tag_unassign_domain() before iommu_disable_pci_caps() to fix\nit."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/iommu/intel/iommu.c"], "versions": [{"version": "3b1d9e2b2d6856eabf5faa12d20c97fef657999f", "lessThan": "9a0a72d3ed919ebe6491f527630998be053151d8", "status": "affected", "versionType": "git"}, {"version": "3b1d9e2b2d6856eabf5faa12d20c97fef657999f", "lessThan": "1f2557e08a617a4b5e92a48a1a9a6f86621def18", "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/iommu/intel/iommu.c"], "versions": [{"version": "6.10", "status": "affected"}, {"version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.6", "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": "6.10", "versionEndExcluding": "6.12.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9a0a72d3ed919ebe6491f527630998be053151d8"}, {"url": "https://git.kernel.org/stable/c/1f2557e08a617a4b5e92a48a1a9a6f86621def18"}], "title": "iommu/vt-d: Remove cache tags before disabling ATS", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-56669", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-02-11T15:41:33.499113Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-11T15:45:21.237Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-56669", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-02-11T15:41:33.499113Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-11T15:41:35.398Z"}}], "cna": {"title": "iommu/vt-d: Remove cache tags before disabling ATS", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3b1d9e2b2d6856eabf5faa12d20c97fef657999f", "lessThan": "9a0a72d3ed919ebe6491f527630998be053151d8", "versionType": "git"}, {"status": "affected", "version": "3b1d9e2b2d6856eabf5faa12d20c97fef657999f", "lessThan": "1f2557e08a617a4b5e92a48a1a9a6f86621def18", "versionType": "git"}], "programFiles": ["drivers/iommu/intel/iommu.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.10"}, {"status": "unaffected", "version": "0", "lessThan": "6.10", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.6", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.13", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/iommu/intel/iommu.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/9a0a72d3ed919ebe6491f527630998be053151d8"}, {"url": "https://git.kernel.org/stable/c/1f2557e08a617a4b5e92a48a1a9a6f86621def18"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Remove cache tags before disabling ATS\n\nThe current implementation removes cache tags after disabling ATS,\nleading to potential memory leaks and kernel crashes. Specifically,\nCACHE_TAG_DEVTLB type cache tags may still remain in the list even\nafter the domain is freed, causing a use-after-free condition.\n\nThis issue really shows up when multiple VFs from different PFs\npassed through to a single user-space process via vfio-pci. In such\ncases, the kernel may crash with kernel messages like:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000014\n PGD 19036a067 P4D 1940a3067 PUD 136c9b067 PMD 0\n Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 74 UID: 0 PID: 3183 Comm: testCli Not tainted 6.11.9 #2\n RIP: 0010:cache_tag_flush_range+0x9b/0x250\n Call Trace:\n <TASK>\n ? __die+0x1f/0x60\n ? page_fault_oops+0x163/0x590\n ? exc_page_fault+0x72/0x190\n ? asm_exc_page_fault+0x22/0x30\n ? cache_tag_flush_range+0x9b/0x250\n ? cache_tag_flush_range+0x5d/0x250\n intel_iommu_tlb_sync+0x29/0x40\n intel_iommu_unmap_pages+0xfe/0x160\n __iommu_unmap+0xd8/0x1a0\n vfio_unmap_unpin+0x182/0x340 [vfio_iommu_type1]\n vfio_remove_dma+0x2a/0xb0 [vfio_iommu_type1]\n vfio_iommu_type1_ioctl+0xafa/0x18e0 [vfio_iommu_type1]\n\nMove cache_tag_unassign_domain() before iommu_disable_pci_caps() to fix\nit."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.6", "versionStartIncluding": "6.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.13", "versionStartIncluding": "6.10"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T10:01:38.487Z"}}}, "cveMetadata": {"cveId": "CVE-2024-56669", "state": "PUBLISHED", "dateUpdated": "2025-05-04T10:01:38.487Z", "dateReserved": "2024-12-27T15:00:39.844Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-12-27T15:06:30.792Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "EFB33A9C-69D1-4691-B0BD-2D5C9590E239", "versionEndExcluding": "6.12.6", "versionStartIncluding": "6.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*", "matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*", "matchCriteriaId": "5A073481-106D-4B15-B4C7-FB0213B8E1D4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Remove cache tags before disabling ATS\n\nThe current implementation removes cache tags after disabling ATS,\nleading to potential memory leaks and kernel crashes. Specifically,\nCACHE_TAG_DEVTLB type cache tags may still remain in the list even\nafter the domain is freed, causing a use-after-free condition.\n\nThis issue really shows up when multiple VFs from different PFs\npassed through to a single user-space process via vfio-pci. In such\ncases, the kernel may crash with kernel messages like:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000014\n PGD 19036a067 P4D 1940a3067 PUD 136c9b067 PMD 0\n Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 74 UID: 0 PID: 3183 Comm: testCli Not tainted 6.11.9 #2\n RIP: 0010:cache_tag_flush_range+0x9b/0x250\n Call Trace:\n <TASK>\n ? __die+0x1f/0x60\n ? page_fault_oops+0x163/0x590\n ? exc_page_fault+0x72/0x190\n ? asm_exc_page_fault+0x22/0x30\n ? cache_tag_flush_range+0x9b/0x250\n ? cache_tag_flush_range+0x5d/0x250\n intel_iommu_tlb_sync+0x29/0x40\n intel_iommu_unmap_pages+0xfe/0x160\n __iommu_unmap+0xd8/0x1a0\n vfio_unmap_unpin+0x182/0x340 [vfio_iommu_type1]\n vfio_remove_dma+0x2a/0xb0 [vfio_iommu_type1]\n vfio_iommu_type1_ioctl+0xafa/0x18e0 [vfio_iommu_type1]\n\nMove cache_tag_unassign_domain() before iommu_disable_pci_caps() to fix\nit."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/vt-d: eliminar etiquetas de cach\u00e9 antes de deshabilitar ATS La implementaci\u00f3n actual elimina las etiquetas de cach\u00e9 despu\u00e9s de deshabilitar ATS, lo que genera posibles fugas de memoria y fallas del kernel. Espec\u00edficamente, las etiquetas de cach\u00e9 de tipo CACHE_TAG_DEVTLB pueden permanecer en la lista incluso despu\u00e9s de que se libere el dominio, lo que provoca una condici\u00f3n de use-after-free. Este problema realmente aparece cuando m\u00faltiples VF de diferentes PF pasan a un solo proceso de espacio de usuario a trav\u00e9s de vfio-pci. En tales casos, el n\u00facleo puede bloquearse con mensajes como: ERROR: desreferencia de puntero NULL del n\u00facleo, direcci\u00f3n: 0000000000000014 PGD 19036a067 P4D 1940a3067 PUD 136c9b067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 74 UID: 0 PID: 3183 Comm: testCli No contaminado 6.11.9 #2 RIP: 0010:cache_tag_flush_range+0x9b/0x250 Rastreo de llamadas: ? __die+0x1f/0x60 ? page_fault_oops+0x163/0x590 ? exc_page_fault+0x72/0x190 ? asm_exc_page_fault+0x22/0x30 ? rango_de_desinfecci\u00f3n_de_etiquetas_de_cach\u00e9+0x9b/0x250 ? cache_tag_flush_range+0x5d/0x250 intel_iommu_tlb_sync+0x29/0x40 intel_iommu_unmap_pages+0xfe/0x160 __iommu_unmap+0xd8/0x1a0 vfio_unmap_unpin+0x182/0x340 [vfio_iommu_type1] vfio_remove_dma+0x2a/0xb0 [vfio_iommu_type1] vfio_iommu_type1_ioctl+0xafa/0x18e0 [vfio_iommu_type1] Mueva cache_tag_unassign_domain() antes de iommu_disable_pci_caps() para solucionarlo."}], "id": "CVE-2024-56669", "lastModified": "2025-02-11T16:15:47.333", "metrics": {"cvssMetricV31": [{"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"}, {"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-12-27T15:15:26.797", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1f2557e08a617a4b5e92a48a1a9a6f86621def18"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9a0a72d3ed919ebe6491f527630998be053151d8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}, {"lang": "en", "value": "CWE-416"}, {"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: iommu/vt-d: Remove cache tags before disabling ATS", "id": "2334564", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334564"}, "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"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\niommu/vt-d: Remove cache tags before disabling ATS\nThe current implementation removes cache tags after disabling ATS,\nleading to potential memory leaks and kernel crashes. Specifically,\nCACHE_TAG_DEVTLB type cache tags may still remain in the list even\nafter the domain is freed, causing a use-after-free condition.\nThis issue really shows up when multiple VFs from different PFs\npassed through to a single user-space process via vfio-pci. In such\ncases, the kernel may crash with kernel messages like:\nBUG: kernel NULL pointer dereference, address: 0000000000000014\nPGD 19036a067 P4D 1940a3067 PUD 136c9b067 PMD 0\nOops: Oops: 0000 [#1] PREEMPT SMP NOPTI\nCPU: 74 UID: 0 PID: 3183 Comm: testCli Not tainted 6.11.9 #2\nRIP: 0010:cache_tag_flush_range+0x9b/0x250\nCall Trace:\n<TASK>\n? __die+0x1f/0x60\n? page_fault_oops+0x163/0x590\n? exc_page_fault+0x72/0x190\n? asm_exc_page_fault+0x22/0x30\n? cache_tag_flush_range+0x9b/0x250\n? cache_tag_flush_range+0x5d/0x250\nintel_iommu_tlb_sync+0x29/0x40\nintel_iommu_unmap_pages+0xfe/0x160\n__iommu_unmap+0xd8/0x1a0\nvfio_unmap_unpin+0x182/0x340 [vfio_iommu_type1]\nvfio_remove_dma+0x2a/0xb0 [vfio_iommu_type1]\nvfio_iommu_type1_ioctl+0xafa/0x18e0 [vfio_iommu_type1]\nMove cache_tag_unassign_domain() before iommu_disable_pci_caps() to fix\nit."], "name": "CVE-2024-56669", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-12-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56669\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56669\nhttps://lore.kernel.org/linux-cve-announce/2024122754-CVE-2024-56669-2ea9@gregkh/T"], "statement": "This is a DOS (NULL pointer De-reference) only.", "threat_severity": "Low"}

{}