CVE-2026-43369

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During cleanup in\namdgpu_device_fini_hw, the code calls amdgpu_device_set_pg_state and\namdgpu_device_set_cg_state which iterate over all IP blocks and access\nadev->ip_blocks[i].version without NULL checks, leading to a kernel\nNULL pointer dereference.\n\nAdd NULL checks for adev->ip_blocks[i].version in both\namdgpu_device_set_cg_state and amdgpu_device_set_pg_state to prevent\ndereferencing NULL pointers during GPU teardown when initialization has\nfailed.\n\n(cherry picked from commit b7ac77468cda92eecae560b05f62f997a12fe2f2)"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/amd: Correcci\u00f3n de desreferencia de puntero NULL en la limpieza del dispositivo\n\nCuando la inicializaci\u00f3n de la GPU falla debido a un bloque de HW no compatible,\nlos bloques IP pueden tener un puntero de versi\u00f3n NULL. Durante la limpieza en\namdgpu_device_fini_hw, el c\u00f3digo llama a amdgpu_device_set_pg_state y\namdgpu_device_set_cg_state, que iteran sobre todos los bloques IP y acceden a\nadev -> ip_blocks[i].version sin comprobaciones de NULL, lo que lleva a una\ndesreferencia de puntero NULL del kernel.\n\nA\u00f1adir comprobaciones de NULL para adev -> ip_blocks[i].version tanto en\namdgpu_device_set_cg_state como en amdgpu_device_set_pg_state para evitar la\ndesreferencia de punteros NULL durante el desmontaje de la GPU cuando la\ninicializaci\u00f3n ha fallado.\n\n(seleccionado de la confirmaci\u00f3n b7ac77468cda92eecae560b05f62f997a12fe2f2)"}], "id": "CVE-2026-43369", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43369", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:36:38.705069Z", "version": "2.0.3"}}]}, "published": "2026-05-08T15:16:47.960", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/062ea905fff7756b2e87143ffccaece5cdb44267"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/43025c941aced9a9009f9ff20eea4eb78c61deb8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/767cd24d3c4ae847688877def4891943f6611ecd"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: drm/amd: Fix NULL pointer dereference in device cleanup", "id": "2468214", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468214"}, "csaw": false, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel's `drm/amd` graphics driver. When a GPU initialization fails due to an unsupported hardware block, certain IP blocks may have a null version pointer. During the device cleanup process, the `amdgpu_device_set_pg_state` and `amdgpu_device_set_cg_state` functions attempt to access these null pointers without proper checks. This can lead to a kernel null pointer dereference, potentially causing a system crash and resulting in a denial of service."], "name": "CVE-2026-43369", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43369\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43369\nhttps://lore.kernel.org/linux-cve-announce/2026050829-CVE-2026-43369-60b9@gregkh/T"]}

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