CVE-2025-21644

{"id": "CVE-2025-21644", "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": "2025-01-19T11:15:09.977", "references": [{"url": "https://git.kernel.org/stable/c/09b94ddc58c6640cbbc7775a61a5387b8be71488", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9ab4981552930a9c45682d62424ba610edc3992d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix tlb invalidation when wedging\n\nIf GuC fails to load, the driver wedges, but in the process it tries to\ndo stuff that may not be initialized yet. This moves the\nxe_gt_tlb_invalidation_init() to be done earlier: as its own doc says,\nit's a software-only initialization and should had been named with the\n_early() suffix.\n\nMove it to be called by xe_gt_init_early(), so the locks and seqno are\ninitialized, avoiding a NULL ptr deref when wedging:\n\n\txe 0000:03:00.0: [drm] *ERROR* GT0: load failed: status: Reset = 0, BootROM = 0x50, UKernel = 0x00, MIA = 0x00, Auth = 0x01\n\txe 0000:03:00.0: [drm] *ERROR* GT0: firmware signature verification failed\n\txe 0000:03:00.0: [drm] *ERROR* CRITICAL: Xe has declared device 0000:03:00.0 as wedged.\n\t...\n\tBUG: kernel NULL pointer dereference, address: 0000000000000000\n\t#PF: supervisor read access in kernel mode\n\t#PF: error_code(0x0000) - not-present page\n\tPGD 0 P4D 0\n\tOops: Oops: 0000 [#1] PREEMPT SMP NOPTI\n\tCPU: 9 UID: 0 PID: 3908 Comm: modprobe Tainted: G U W 6.13.0-rc4-xe+ #3\n\tTainted: [U]=USER, [W]=WARN\n\tHardware name: Intel Corporation Alder Lake Client Platform/AlderLake-S ADP-S DDR5 UDIMM CRB, BIOS ADLSFWI1.R00.3275.A00.2207010640 07/01/2022\n\tRIP: 0010:xe_gt_tlb_invalidation_reset+0x75/0x110 [xe]\n\nThis can be easily triggered by poking the GuC binary to force a\nsignature failure. There will still be an extra message,\n\n\txe 0000:03:00.0: [drm] *ERROR* GT0: GuC mmio request 0x4100: no reply 0x4100\n\nbut that's better than a NULL ptr deref.\n\n(cherry picked from commit 5001ef3af8f2c972d6fd9c5221a8457556f8bea6)"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/xe: Se corrige la invalidaci\u00f3n de tlb al realizar un wedging. Si GuC no se carga, el controlador realiza un wedging, pero en el proceso intenta hacer cosas que quiz\u00e1s a\u00fan no se hayan inicializado. Esto hace que xe_gt_tlb_invalidation_init() se realice antes: como dice su propia documentaci\u00f3n, es una inicializaci\u00f3n solo de software y deber\u00eda haber sido nombrada con el sufijo _early(). Mu\u00e9velo para que sea llamado por xe_gt_init_early(), de modo que los bloqueos y seqno se inicialicen, evitando un ptr deref NULL al realizar cu\u00f1as: xe 0000:03:00.0: [drm] *ERROR* GT0: carga fallida: estado: Reset = 0, BootROM = 0x50, UKernel = 0x00, MIA = 0x00, Auth = 0x01 xe 0000:03:00.0: [drm] *ERROR* GT0: verificaci\u00f3n de firma de firmware fallida xe 0000:03:00.0: [drm] *ERROR* CR\u00cdTICO: Xe ha declarado el dispositivo 0000:03:00.0 como cu\u00f1ado. ... ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000000 #PF: acceso de lectura del supervisor en modo kernel #PF: error_code(0x0000) - p\u00e1gina no presente PGD 0 P4D 0 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 9 UID: 0 PID: 3908 Comm: modprobe Contaminado: GUW 6.13.0-rc4-xe+ #3 Contaminado: [U]=USER, [W]=WARN Nombre del hardware: Intel Corporation Alder Lake Client Platform/AlderLake-S ADP-S DDR5 UDIMM CRB, BIOS ADLSFWI1.R00.3275.A00.2207010640 01/07/2022 RIP: 0010:xe_gt_tlb_invalidation_reset+0x75/0x110 [xe] Esto se puede activar f\u00e1cilmente al presionar el binario GuC para forzar un error de firma. A\u00fan habr\u00e1 un mensaje adicional, xe 0000:03:00.0: [drm] *ERROR* GT0: Solicitud mmio GuC 0x4100: no hay respuesta 0x4100 pero eso es mejor que una desreferencia de ptr NULL. (seleccionado de el commit 5001ef3af8f2c972d6fd9c5221a8457556f8bea6)"}], "lastModified": "2025-01-31T15:55:03.973", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AD20F8BA-D1BC-4584-8C68-17E958381157", "versionEndExcluding": "6.12.10", "versionStartIncluding": "6.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A073481-106D-4B15-B4C7-FB0213B8E1D4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE491969-75AE-4A6B-9A58-8FC5AF98798F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "93C0660D-7FB8-4FBA-892A-B064BA71E49E"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "034C36A6-C481-41F3-AE9A-D116E5BE6895"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8AF9DC49-2085-4FFB-A7E3-73DFAFECC7F2"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}