CVE-2025-38521

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/imagination/pvr_power.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9f852d301f642223c4798f3c13ba15e91165d078", "status": "affected", "version": "cc1aeedb98ad347c06ff59e991b2f94dfb4c565d", "versionType": "git"}, {"lessThan": "e066cc6e0f094ca2120f1928d126d56f686cd73e", "status": "affected", "version": "cc1aeedb98ad347c06ff59e991b2f94dfb4c565d", "versionType": "git"}, {"lessThan": "d38376b3ee48d073c64e75e150510d7e6b4b04f7", "status": "affected", "version": "cc1aeedb98ad347c06ff59e991b2f94dfb4c565d", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/imagination/pvr_power.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"lessThan": "6.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.39", "versionType": "semver"}, {"lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "10807776-5E00-40EF-A71B-8298F5EF80E3", "versionEndExcluding": "6.12.39", "versionStartIncluding": "6.8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "F9C46937-5FA9-4335-AD7B-E7FC29453CE1", "versionEndExcluding": "6.15.7", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*", "matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*", "matchCriteriaId": "09709862-E348-4378-8632-5A7813EDDC86", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*", "matchCriteriaId": "415BF58A-8197-43F5-B3D7-D1D63057A26E", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*", "matchCriteriaId": "A0517869-312D-4429-80C2-561086E1421C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*", "matchCriteriaId": "85421F4E-C863-4ABF-B4B4-E887CC2F7F92", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: Fix kernel crash when hard resetting the GPU\n\nThe GPU hard reset sequence calls pm_runtime_force_suspend() and\npm_runtime_force_resume(), which according to their documentation should\nonly be used during system-wide PM transitions to sleep states.\n\nThe main issue though is that depending on some internal runtime PM\nstate as seen by pm_runtime_force_suspend() (whether the usage count is\n<= 1), pm_runtime_force_resume() might not resume the device unless\nneeded. If that happens, the runtime PM resume callback\npvr_power_device_resume() is not called, the GPU clocks are not\nre-enabled, and the kernel crashes on the next attempt to access GPU\nregisters as part of the power-on sequence.\n\nReplace calls to pm_runtime_force_suspend() and\npm_runtime_force_resume() with direct calls to the driver's runtime PM\ncallbacks, pvr_power_device_suspend() and pvr_power_device_resume(),\nto ensure clocks are re-enabled and avoid the kernel crash."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/imagination: Se corrige el fallo del kernel al reiniciar la GPU La secuencia de reinicio completo de la GPU llama a pm_runtime_force_suspend() y pm_runtime_force_resume(), que seg\u00fan su documentaci\u00f3n solo se deben usar durante las transiciones de PM de todo el sistema a estados de suspensi\u00f3n. Sin embargo, el problema principal es que, dependiendo de alg\u00fan estado interno de PM en tiempo de ejecuci\u00f3n, como se ve en pm_runtime_force_suspend() (si el recuento de uso es &lt;= 1), pm_runtime_force_resume() podr\u00eda no reanudar el dispositivo a menos que sea necesario. Si eso sucede, no se llama a la devoluci\u00f3n de llamada de reanudaci\u00f3n de PM en tiempo de ejecuci\u00f3n pvr_power_device_resume(), no se vuelven a habilitar los relojes de la GPU y el kernel se bloquea en el siguiente intento de acceder a los registros de la GPU como parte de la secuencia de encendido. Reemplace las llamadas a pm_runtime_force_suspend() y pm_runtime_force_resume() con llamadas directas a las devoluciones de llamadas PM de tiempo de ejecuci\u00f3n del controlador, pvr_power_device_suspend() y pvr_power_device_resume(), para garantizar que los relojes se vuelvan a habilitar y evitar el bloqueo del kernel."}], "id": "CVE-2025-38521", "lastModified": "2026-11-05T21:18:34.047", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-38521", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T20:57:48.793718Z", "version": "2.0.3"}}]}, "published": "2025-08-16T11:15:45.413", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9f852d301f642223c4798f3c13ba15e91165d078"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d38376b3ee48d073c64e75e150510d7e6b4b04f7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e066cc6e0f094ca2120f1928d126d56f686cd73e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-668"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: drm/imagination: Fix kernel crash when hard resetting the GPU", "id": "2391072", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2391072"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/imagination: Fix kernel crash when hard resetting the GPU\nThe GPU hard reset sequence calls pm_runtime_force_suspend() and\npm_runtime_force_resume(), which according to their documentation should\nonly be used during system-wide PM transitions to sleep states.\nThe main issue though is that depending on some internal runtime PM\nstate as seen by pm_runtime_force_suspend() (whether the usage count is\n<= 1), pm_runtime_force_resume() might not resume the device unless\nneeded. If that happens, the runtime PM resume callback\npvr_power_device_resume() is not called, the GPU clocks are not\nre-enabled, and the kernel crashes on the next attempt to access GPU\nregisters as part of the power-on sequence.\nReplace calls to pm_runtime_force_suspend() and\npm_runtime_force_resume() with direct calls to the driver's runtime PM\ncallbacks, pvr_power_device_suspend() and pvr_power_device_resume(),\nto ensure clocks are re-enabled and avoid the kernel crash."], "name": "CVE-2025-38521", "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": "2025-08-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38521\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38521\nhttps://lore.kernel.org/linux-cve-announce/2025081654-CVE-2025-38521-4543@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-08-18T20:50:03.596601+00:00", "updated": "2025-08-18T20:50:03.596681+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}