CVE-2025-38131

{"id": "CVE-2025-38131", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"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"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-07-03T09:15:27.430", "references": [{"url": "https://git.kernel.org/stable/c/31028812724cef7bd57a51525ce58a32a6d73b22", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/408c97c4a5e0b634dcd15bf8b8808b382e888164", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b3b4efa2e623aecaebd7c9b9e4171f5c659e9724", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dfe8224c9c7a43d356eb9f74b06868aa05f90223", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ed42ee1ed05ff2f4c36938379057413a40c56680", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncoresight: prevent deactivate active config while enabling the config\n\nWhile enable active config via cscfg_csdev_enable_active_config(),\nactive config could be deactivated via configfs' sysfs interface.\nThis could make UAF issue in below scenario:\n\nCPU0 CPU1\n(sysfs enable) load module\n cscfg_load_config_sets()\n activate config. // sysfs\n (sys_active_cnt == 1)\n...\ncscfg_csdev_enable_active_config()\nlock(csdev->cscfg_csdev_lock)\n// here load config activate by CPU1\nunlock(csdev->cscfg_csdev_lock)\n\n deactivate config // sysfs\n (sys_activec_cnt == 0)\n cscfg_unload_config_sets()\n unload module\n\n// access to config_desc which freed\n// while unloading module.\ncscfg_csdev_enable_config\n\nTo address this, use cscfg_config_desc's active_cnt as a reference count\n which will be holded when\n - activate the config.\n - enable the activated config.\nand put the module reference when config_active_cnt == 0."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: coresight: impide la desactivaci\u00f3n de la configuraci\u00f3n activa al habilitarla. Al habilitar la configuraci\u00f3n activa mediante cscfg_csdev_enable_active_config(), esta podr\u00eda desactivarse mediante la interfaz sysfs de configfs. Esto podr\u00eda generar un problema de UAF en el siguiente escenario: CPU0 CPU1 (habilitaci\u00f3n sysfs) carga el m\u00f3dulo cscfg_load_config_sets() activa la configuraci\u00f3n. // sysfs (sys_active_cnt == 1) ... cscfg_csdev_enable_active_config() lock(csdev->cscfg_csdev_lock) // aqu\u00ed carga la configuraci\u00f3n activada por CPU1 unlock(csdev->cscfg_csdev_lock) desactiva la configuraci\u00f3n // sysfs (sys_activec_cnt == 0) cscfg_unload_config_sets() descarga el m\u00f3dulo // acceso a config_desc que se liber\u00f3 // mientras se descargaba el m\u00f3dulo. cscfg_csdev_enable_config Para solucionar esto, utilice active_cnt de cscfg_config_desc como un recuento de referencia que se mantendr\u00e1 cuando: - active la configuraci\u00f3n. - habilite la configuraci\u00f3n activada y coloque la referencia del m\u00f3dulo cuando config_active_cnt == 0."}], "lastModified": "2025-12-17T18:12:21.080", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CBF67A42-F9C5-4A10-87CD-CC5CC75E6BF5", "versionEndExcluding": "6.1.142", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "304E3F01-7D7A-4908-994E-7F95C5C00B06", "versionEndExcluding": "6.6.94", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4FFA54AA-CDFE-4591-BD07-72813D0948F4", "versionEndExcluding": "6.12.34", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0541C761-BD5E-4C1A-8432-83B375D7EB92", "versionEndExcluding": "6.15.3", "versionStartIncluding": "6.13"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}