CVE-2025-37837

{"id": "CVE-2025-37837", "cveTags": [], "metrics": {"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}]}, "published": "2025-05-09T07:16:04.467", "references": [{"url": "https://git.kernel.org/stable/c/5584dbf393df509159813645a487b1ef76557722", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/767e22001dfce64cc03b7def1562338591ab6031", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e38ed6908080047d8fa1763d1da86b584f9eb55b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e5dd974d6e00704553308ef1a88659f8dcfb39d4", "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\niommu/tegra241-cmdqv: Fix warnings due to dmam_free_coherent()\n\nTwo WARNINGs are observed when SMMU driver rolls back upon failure:\n arm-smmu-v3.9.auto: Failed to register iommu\n arm-smmu-v3.9.auto: probe with driver arm-smmu-v3 failed with error -22\n ------------[ cut here ]------------\n WARNING: CPU: 5 PID: 1 at kernel/dma/mapping.c:74 dmam_free_coherent+0xc0/0xd8\n Call trace:\n dmam_free_coherent+0xc0/0xd8 (P)\n tegra241_vintf_free_lvcmdq+0x74/0x188\n tegra241_cmdqv_remove_vintf+0x60/0x148\n tegra241_cmdqv_remove+0x48/0xc8\n arm_smmu_impl_remove+0x28/0x60\n devm_action_release+0x1c/0x40\n ------------[ cut here ]------------\n 128 pages are still in use!\n WARNING: CPU: 16 PID: 1 at mm/page_alloc.c:6902 free_contig_range+0x18c/0x1c8\n Call trace:\n free_contig_range+0x18c/0x1c8 (P)\n cma_release+0x154/0x2f0\n dma_free_contiguous+0x38/0xa0\n dma_direct_free+0x10c/0x248\n dma_free_attrs+0x100/0x290\n dmam_free_coherent+0x78/0xd8\n tegra241_vintf_free_lvcmdq+0x74/0x160\n tegra241_cmdqv_remove+0x98/0x198\n arm_smmu_impl_remove+0x28/0x60\n devm_action_release+0x1c/0x40\n\nThis is because the LVCMDQ queue memory are managed by devres, while that\ndmam_free_coherent() is called in the context of devm_action_release().\n\nJason pointed out that \"arm_smmu_impl_probe() has mis-ordered the devres\ncallbacks if ops->device_remove() is going to be manually freeing things\nthat probe allocated\":\nhttps://lore.kernel.org/linux-iommu/20250407174408.GB1722458@nvidia.com/\n\nIn fact, tegra241_cmdqv_init_structures() only allocates memory resources\nwhich means any failure that it generates would be similar to -ENOMEM, so\nthere is no point in having that \"falling back to standard SMMU\" routine,\nas the standard SMMU would likely fail to allocate memory too.\n\nRemove the unwind part in tegra241_cmdqv_init_structures(), and return a\nproper error code to ask SMMU driver to call tegra241_cmdqv_remove() via\nimpl_ops->device_remove(). Then, drop tegra241_vintf_free_lvcmdq() since\ndevres will take care of that."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/tegra241-cmdqv: Se corrigen las advertencias debido a dmam_free_coherent() Se observan dos ADVERTENCIAS cuando el controlador SMMU se revierte tras un error: arm-smmu-v3.9.auto: No se pudo registrar iommu arm-smmu-v3.9.auto: La sonda con el controlador arm-smmu-v3 fall\u00f3 con el error -22 ------------[ cortar aqu\u00ed ]------------ ADVERTENCIA: CPU: 5 PID: 1 en kernel/dma/mapping.c:74 dmam_free_coherent+0xc0/0xd8 Rastreo de llamadas: dmam_free_coherent+0xc0/0xd8 (P) tegra241_vintf_free_lvcmdq+0x74/0x188 tegra241_cmdqv_remove_vintf+0x60/0x148 tegra241_cmdqv_remove+0x48/0xc8 arm_smmu_impl_remove+0x28/0x60 devm_action_release+0x1c/0x40 ------------[ cortar aqu\u00ed ]------------ \u00a1128 p\u00e1ginas a\u00fan est\u00e1n en uso! ADVERTENCIA: CPU: 16 PID: 1 en mm/page_alloc.c:6902 free_contig_range+0x18c/0x1c8 Rastreo de llamadas: free_contig_range+0x18c/0x1c8 (P) cma_release+0x154/0x2f0 dma_free_contiguous+0x38/0xa0 dma_direct_free+0x10c/0x248 dma_free_attrs+0x100/0x290 dmam_free_coherent+0x78/0xd8 tegra241_vintf_free_lvcmdq+0x74/0x160 tegra241_cmdqv_remove+0x98/0x198 arm_smmu_impl_remove+0x28/0x60 devm_action_release+0x1c/0x40 Esto se debe a que devres gestiona la memoria de la cola LVCMDQ, mientras que dmam_free_coherent() se llama en el contexto de devm_action_release(). Jason se\u00f1al\u00f3 que \"arm_smmu_impl_probe() ha ordenado incorrectamente las devoluciones de llamada de devres si ops->device_remove() va a liberar manualmente los recursos asignados por la sonda\": https://lore.kernel.org/linux-iommu/20250407174408.GB1722458@nvidia.com/ De hecho, tegra241_cmdqv_init_structures() solo asigna recursos de memoria, lo que significa que cualquier fallo que genere ser\u00eda similar a -ENOMEM, por lo que no tiene sentido recurrir a la rutina SMMU est\u00e1ndar, ya que es probable que la SMMU est\u00e1ndar tampoco asigne memoria. Elimine la parte de desenrollado en tegra241_cmdqv_init_structures() y devuelva un c\u00f3digo de error adecuado para solicitar al controlador SMMU que llame a tegra241_cmdqv_remove() mediante impl_ops->device_remove(). Luego, elimine tegra241_vintf_free_lvcmdq(), ya que devres se encargar\u00e1 de ello."}], "lastModified": "2025-11-14T20:00:56.753", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A7F4DC6-D8BB-41CD-97F3-E05815513305", "versionEndExcluding": "6.12.24", "versionStartIncluding": "6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4A475784-BF3B-4514-81EE-49C8522FB24A", "versionEndExcluding": "6.13.12", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "483E2E15-2135-4EC6-AB64-16282C5EF704", "versionEndExcluding": "6.14.3", "versionStartIncluding": "6.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8D465631-2980-487A-8E65-40AE2B9F8ED1"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}