CVE-2025-38136

{"id": "CVE-2025-38136", "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": "2025-07-03T09:15:28.097", "references": [{"url": "https://git.kernel.org/stable/c/095cc0b5888acc228f12344e85b17539b9ce9367", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/0a1e16a6cbf4452b46f20b862d6141a1e90844ee", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/155453ada562c450a4ff5fcf4852b9fa5b6b793a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1637623ad6205162b17804d07512e6f4cbd2a050", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6bab152e817fd41b9e178fa6b275354795c9703d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d4c368e4a638ddf4a9d6d687b0ff691aa46cce53", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/db96a4fd8614d47c0def265e0e6c996b0ee52a38", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ffb34a60ce86656ba12d46e91f1ccc71dd221251", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"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": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-908"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: renesas_usbhs: Reorder clock handling and power management in probe\n\nReorder the initialization sequence in `usbhs_probe()` to enable runtime\nPM before accessing registers, preventing potential crashes due to\nuninitialized clocks.\n\nCurrently, in the probe path, registers are accessed before enabling the\nclocks, leading to a synchronous external abort on the RZ/V2H SoC.\nThe problematic call flow is as follows:\n\n usbhs_probe()\n usbhs_sys_clock_ctrl()\n usbhs_bset()\n usbhs_write()\n iowrite16() <-- Register access before enabling clocks\n\nSince `iowrite16()` is performed without ensuring the required clocks are\nenabled, this can lead to access errors. To fix this, enable PM runtime\nearly in the probe function and ensure clocks are acquired before register\naccess, preventing crashes like the following on RZ/V2H:\n\n[13.272640] Internal error: synchronous external abort: 0000000096000010 [#1] PREEMPT SMP\n[13.280814] Modules linked in: cec renesas_usbhs(+) drm_kms_helper fuse drm backlight ipv6\n[13.289088] CPU: 1 UID: 0 PID: 195 Comm: (udev-worker) Not tainted 6.14.0-rc7+ #98\n[13.296640] Hardware name: Renesas RZ/V2H EVK Board based on r9a09g057h44 (DT)\n[13.303834] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[13.310770] pc : usbhs_bset+0x14/0x4c [renesas_usbhs]\n[13.315831] lr : usbhs_probe+0x2e4/0x5ac [renesas_usbhs]\n[13.321138] sp : ffff8000827e3850\n[13.324438] x29: ffff8000827e3860 x28: 0000000000000000 x27: ffff8000827e3ca0\n[13.331554] x26: ffff8000827e3ba0 x25: ffff800081729668 x24: 0000000000000025\n[13.338670] x23: ffff0000c0f08000 x22: 0000000000000000 x21: ffff0000c0f08010\n[13.345783] x20: 0000000000000000 x19: ffff0000c3b52080 x18: 00000000ffffffff\n[13.352895] x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000827e36ce\n[13.360009] x14: 00000000000003d7 x13: 00000000000003d7 x12: 0000000000000000\n[13.367122] x11: 0000000000000000 x10: 0000000000000aa0 x9 : ffff8000827e3750\n[13.374235] x8 : ffff0000c1850b00 x7 : 0000000003826060 x6 : 000000000000001c\n[13.381347] x5 : 000000030d5fcc00 x4 : ffff8000825c0000 x3 : 0000000000000000\n[13.388459] x2 : 0000000000000400 x1 : 0000000000000000 x0 : ffff0000c3b52080\n[13.395574] Call trace:\n[13.398013] usbhs_bset+0x14/0x4c [renesas_usbhs] (P)\n[13.403076] platform_probe+0x68/0xdc\n[13.406738] really_probe+0xbc/0x2c0\n[13.410306] __driver_probe_device+0x78/0x120\n[13.414653] driver_probe_device+0x3c/0x154\n[13.418825] __driver_attach+0x90/0x1a0\n[13.422647] bus_for_each_dev+0x7c/0xe0\n[13.426470] driver_attach+0x24/0x30\n[13.430032] bus_add_driver+0xe4/0x208\n[13.433766] driver_register+0x68/0x130\n[13.437587] __platform_driver_register+0x24/0x30\n[13.442273] renesas_usbhs_driver_init+0x20/0x1000 [renesas_usbhs]\n[13.448450] do_one_initcall+0x60/0x1d4\n[13.452276] do_init_module+0x54/0x1f8\n[13.456014] load_module+0x1754/0x1c98\n[13.459750] init_module_from_file+0x88/0xcc\n[13.464004] __arm64_sys_finit_module+0x1c4/0x328\n[13.468689] invoke_syscall+0x48/0x104\n[13.472426] el0_svc_common.constprop.0+0xc0/0xe0\n[13.477113] do_el0_svc+0x1c/0x28\n[13.480415] el0_svc+0x30/0xcc\n[13.483460] el0t_64_sync_handler+0x10c/0x138\n[13.487800] el0t_64_sync+0x198/0x19c\n[13.491453] Code: 2a0103e1 12003c42 12003c63 8b010084 (79400084)\n[13.497522] ---[ end trace 0000000000000000 ]---"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: renesas_usbhs: Reordenar el manejo del reloj y la administraci\u00f3n de energ\u00eda en la sonda Reordenar la secuencia de inicializaci\u00f3n en `usbhs_probe()` para habilitar PM en tiempo de ejecuci\u00f3n antes de acceder a los registros, lo que evita posibles fallos debido a relojes no inicializados. Actualmente, en la ruta de la sonda, se accede a los registros antes de habilitar los relojes, lo que lleva a un aborto externo s\u00edncrono en el SoC RZ/V2H. El flujo de llamada problem\u00e1tico es el siguiente: usbhs_probe() usbhs_sys_clock_ctrl() usbhs_bset() usbhs_write() iowrite16() &lt;-- Acceso a registros antes de habilitar los relojes Dado que `iowrite16()` se realiza sin garantizar que los relojes requeridos est\u00e9n habilitados, esto puede llevar a errores de acceso. Para solucionar esto, habilite el tiempo de ejecuci\u00f3n de PM temprano en la funci\u00f3n de sonda y aseg\u00farese de que los relojes se adquieran antes del acceso al registro, lo que evita fallos como el siguiente en RZ/V2H: [13.272640] Error interno: aborto externo s\u00edncrono: 0000000096000010 [#1] PREEMPT SMP [13.280814] M\u00f3dulos vinculados: cec renesas_usbhs(+) drm_kms_helper fuse drm backlight ipv6 [13.289088] CPU: 1 UID: 0 PID: 195 Comm: (udev-worker) Not tainted 6.14.0-rc7+ #98 [13.296640] Nombre del hardware: Renesas RZ/V2H EVK Board based on r9a09g057h44 (DT) [13.303834] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [13.310770] pc : usbhs_bset+0x14/0x4c [renesas_usbhs] [13.315831] lr : usbhs_probe+0x2e4/0x5ac [renesas_usbhs] [13.321138] sp : ffff8000827e3850 [13.324438] x29: ffff8000827e3860 x28: 0000000000000000 x27: ffff8000827e3ca0 [13.331554] x26: ffff8000827e3ba0 x25: ffff800081729668 x24: 0000000000000025 [13.338670] x23: ffff0000c0f08000 x22: 0000000000000000 x21: ffff0000c0f08010 [13.345783] x20: 0000000000000000 x19: ffff0000c3b52080 x18: 00000000ffffffff [13.352895] x17: 000000000000000 x16: 000000000000000 x15: ffff8000827e36ce [13.360009] x14: 00000000000003d7 x13: 000000000000003d7 x12: 0000000000000000 [13.367122] x11: 0000000000000000 x10: 0000000000000aa0 x9: ffff8000827e3750 [13.374235] x8: ffff0000c1850b00 x7: 0000000003826060 x6: 000000000000001c [13.381347] x5 : 000000030d5fcc00 x4 : ffff8000825c0000 x3 : 0000000000000000 [13.388459] x2 : 0000000000000400 x1 : 0000000000000000 x0 : ffff0000c3b52080 [13.395574] Rastreo de llamadas: [13.398013] usbhs_bset+0x14/0x4c [renesas_usbhs] (P) [13.403076] platform_probe+0x68/0xdc [13.406738] really_probe+0xbc/0x2c0 [13.410306] __driver_probe_device+0x78/0x120 [13.414653] driver_probe_device+0x3c/0x154 [13.418825] __driver_attach+0x90/0x1a0 [13.422647] bus_for_each_dev+0x7c/0xe0 [13.426470] driver_attach+0x24/0x30 [13.430032] bus_add_driver+0xe4/0x208 [13.433766] driver_register+0x68/0x130 [13.437587] __platform_driver_register+0x24/0x30 [13.442273] renesas_usbhs_driver_init+0x20/0x1000 [renesas_usbhs] [13.448450] do_one_initcall+0x60/0x1d4 [13.452276] do_init_module+0x54/0x1f8 [13.456014] load_module+0x1754/0x1c98 [13.459750] init_module_from_file+0x88/0xcc [13.464004] __arm64_sys_finit_module+0x1c4/0x328 [13.468689] invoke_syscall+0x48/0x104 [13.472426] el0_svc_common.constprop.0+0xc0/0xe0 [13.477113] do_el0_svc+0x1c/0x28 [13.480415] el0_svc+0x30/0xcc [13.483460] el0t_64_sync_handler+0x10c/0x138 [13.487800] el0t_64_sync+0x198/0x19c [13.491453] Code: 2a0103e1 12003c42 12003c63 8b010084 (79400084) [13.497522] ---[ fin de seguimiento 0000000000000000 ]---"}], "lastModified": "2025-12-17T18:12:36.653", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "34030265-A375-433C-9142-5BD3EFE492A1", "versionEndExcluding": "5.4.295", "versionStartIncluding": "3.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C3D14F4C-A21E-465D-A928-5CCE684E2B98", "versionEndExcluding": "5.10.239", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D96F2C0D-0D4A-4658-AD34-D8A626EA422D", "versionEndExcluding": "5.15.186", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "459B4E94-FE0E-434D-B782-95E3A5FFC6B1", "versionEndExcluding": "6.1.142", "versionStartIncluding": "5.16"}, {"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"}