CVE-2026-43318

{"id": "CVE-2026-43318", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43318", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:35:29.359286Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "a448cb003edcb4b63d0a9c95f3faab724e6150fb", "lessThan": "82a7ea35a1526bef8ae170c33ff80e5db7728961", "versionType": "git"}, {"status": "affected", "version": "a448cb003edcb4b63d0a9c95f3faab724e6150fb", "lessThan": "89a9389ad70d3c69538e59d87df67d407aef4c26", "versionType": "git"}, {"status": "affected", "version": "a448cb003edcb4b63d0a9c95f3faab724e6150fb", "lessThan": "3307459eb3583115264421e859858d1f90f3694a", "versionType": "git"}, {"status": "affected", "version": "a448cb003edcb4b63d0a9c95f3faab724e6150fb", "lessThan": "b18fc0ab837381c1a6ef28386602cd888f2d9edf", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"status": "unaffected", "version": "0", "lessThan": "5.7", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.75", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.16", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.6", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c"], "defaultStatus": "affected"}]}], "published": "2026-05-08T14:16:40.363", "references": [{"url": "https://git.kernel.org/stable/c/3307459eb3583115264421e859858d1f90f3694a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/82a7ea35a1526bef8ae170c33ff80e5db7728961", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/89a9389ad70d3c69538e59d87df67d407aef4c26", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b18fc0ab837381c1a6ef28386602cd888f2d9edf", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix sync handling in amdgpu_dma_buf_move_notify\n\nInvalidating a dmabuf will impact other users of the shared BO.\nIn the scenario where process A moves the BO, it needs to inform\nprocess B about the move and process B will need to update its\npage table.\n\nThe commit fixes a synchronisation bug caused by the use of the\nticket: it made amdgpu_vm_handle_moved behave as if updating\nthe page table immediately was correct but in this case it's not.\n\nAn example is the following scenario, with 2 GPUs and glxgears\nrunning on GPU0 and Xorg running on GPU1, on a system where P2P\nPCI isn't supported:\n\nglxgears:\n export linear buffer from GPU0 and import using GPU1\n submit frame rendering to GPU0\n submit tiled->linear blit\nXorg:\n copy of linear buffer\n\nThe sequence of jobs would be:\n drm_sched_job_run # GPU0, frame rendering\n drm_sched_job_queue # GPU0, blit\n drm_sched_job_done # GPU0, frame rendering\n drm_sched_job_run # GPU0, blit\n move linear buffer for GPU1 access #\n amdgpu_dma_buf_move_notify -> update pt # GPU0\n\nIt this point the blit job on GPU0 is still running and would\nlikely produce a page fault."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/amdgpu: corrige el manejo de sincronizaci\u00f3n en amdgpu_dma_buf_move_notify\n\nInvalidar un dmabuf tendr\u00e1 impacto en otros usuarios del BO compartido.\nEn el escenario donde el proceso A mueve el BO, necesita informar\nal proceso B sobre el movimiento y el proceso B necesitar\u00e1 actualizar su\ntabla de p\u00e1ginas.\n\nEl commit corrige un error de sincronizaci\u00f3n causado por el uso del\nticket: hizo que amdgpu_vm_handle_moved se comportara como si actualizar\nla tabla de p\u00e1ginas inmediatamente fuera correcto, pero en este caso no lo es.\n\nUn ejemplo es el siguiente escenario, con 2 GPUs y glxgears\nejecut\u00e1ndose en GPU0 y Xorg ejecut\u00e1ndose en GPU1, en un sistema donde P2P\nPCI no es compatible:\n\nglxgears:\n exportar b\u00fafer lineal desde GPU0 e importar usando GPU1\n enviar renderizado de fotogramas a GPU0\n enviar blit de mosaico a lineal\nXorg:\n copia del b\u00fafer lineal\n\nLa secuencia de trabajos ser\u00eda:\n drm_sched_job_run # GPU0, renderizado de fotogramas\n drm_sched_job_queue # GPU0, blit\n drm_sched_job_done # GPU0, renderizado de fotogramas\n drm_sched_job_run # GPU0, blit\n mover b\u00fafer lineal para acceso de GPU1 #\n amdgpu_dma_buf_move_notify -> actualizar pt # GPU0\n\nEn este punto, el trabajo de blit en GPU0 todav\u00eda se est\u00e1 ejecutando y\nprobablemente producir\u00eda un fallo de p\u00e1gina."}], "lastModified": "2026-11-11T20:10:00.273", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3E952027-3F78-4493-B648-5D99B5D396A6", "versionEndExcluding": "6.12.75", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B", "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}