CVE-2024-56556

{"id": "CVE-2024-56556", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.0, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.0}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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": "2024-12-27T15:15:14.410", "references": [{"url": "https://git.kernel.org/stable/c/38fbefeb2c140b581ed7de8117a5c90d6dd89c22", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dc8aea47b928cc153b591b3558829ce42f685074", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-416"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinder: fix node UAF in binder_add_freeze_work()\n\nIn binder_add_freeze_work() we iterate over the proc->nodes with the\nproc->inner_lock held. However, this lock is temporarily dropped in\norder to acquire the node->lock first (lock nesting order). This can\nrace with binder_node_release() and trigger a use-after-free:\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x19c\n Write of size 4 at addr ffff53c04c29dd04 by task freeze/640\n\n CPU: 5 UID: 0 PID: 640 Comm: freeze Not tainted 6.11.0-07343-ga727812a8d45 #17\n Hardware name: linux,dummy-virt (DT)\n Call trace:\n _raw_spin_lock+0xe4/0x19c\n binder_add_freeze_work+0x148/0x478\n binder_ioctl+0x1e70/0x25ac\n __arm64_sys_ioctl+0x124/0x190\n\n Allocated by task 637:\n __kmalloc_cache_noprof+0x12c/0x27c\n binder_new_node+0x50/0x700\n binder_transaction+0x35ac/0x6f74\n binder_thread_write+0xfb8/0x42a0\n binder_ioctl+0x18f0/0x25ac\n __arm64_sys_ioctl+0x124/0x190\n\n Freed by task 637:\n kfree+0xf0/0x330\n binder_thread_read+0x1e88/0x3a68\n binder_ioctl+0x16d8/0x25ac\n __arm64_sys_ioctl+0x124/0x190\n ==================================================================\n\nFix the race by taking a temporary reference on the node before\nreleasing the proc->inner lock. This ensures the node remains alive\nwhile in use."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: binder: reparar el UAF del nodo en binder_add_freeze_work() En binder_add_freeze_work() iteramos sobre proc->nodes con el proc->inner_lock retenido. Sin embargo, este bloqueo se elimina temporalmente para adquirir primero el node->lock (orden de anidamiento de bloqueos). Esto puede competir con binder_node_release() y activar un use-after-free: ====================================================================== ERROR: KASAN: use-after-free de losa en _raw_spin_lock+0xe4/0x19c Escritura de tama\u00f1o 4 en la direcci\u00f3n ffff53c04c29dd04 por la tarea freeze/640 CPU: 5 UID: 0 PID: 640 Comm: freeze No contaminado 6.11.0-07343-ga727812a8d45 #17 Nombre del hardware: linux,dummy-virt (DT) Rastreo de llamadas: _raw_spin_lock+0xe4/0x19c binder_add_freeze_work+0x148/0x478 binder_ioctl+0x1e70/0x25ac __arm64_sys_ioctl+0x124/0x190 Asignado por la tarea 637: __kmalloc_cache_noprof+0x12c/0x27c binder_new_node+0x50/0x700 binder_transaction+0x35ac/0x6f74 binder_thread_write+0xfb8/0x42a0 binder_ioctl+0x18f0/0x25ac __arm64_sys_ioctl+0x124/0x190 Liberado por la tarea 637: kfree+0xf0/0x330 binder_thread_read+0x1e88/0x3a68 binder_ioctl+0x16d8/0x25ac __arm64_sys_ioctl+0x124/0x190 == ..."}], "lastModified": "2025-02-10T18:15:30.940", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "938626A1-5477-4679-A5E2-2AADE66DEDCA", "versionEndExcluding": "6.12.4", "versionStartIncluding": "6.12"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}