CVE-2025-39824

{"id": "CVE-2025-39824", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-39824", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-05T21:12:20.617249Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "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}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "9ce12d8be12c94334634dd57050444910415e45f", "lessThan": "9a9e4a8317437bf944fa017c66e1e23a0368b5c7", "versionType": "git"}, {"status": "affected", "version": "9ce12d8be12c94334634dd57050444910415e45f", "lessThan": "7170122e2ae4ab378c9cdf7cc54dea8b0abbbca5", "versionType": "git"}, {"status": "affected", "version": "9ce12d8be12c94334634dd57050444910415e45f", "lessThan": "eaae728e7335b5dbad70966e2bd520a731fdf7b2", "versionType": "git"}, {"status": "affected", "version": "9ce12d8be12c94334634dd57050444910415e45f", "lessThan": "a8ca8fe7f516d27ece3afb995c3bd4d07dcbe62c", "versionType": "git"}, {"status": "affected", "version": "9ce12d8be12c94334634dd57050444910415e45f", "lessThan": "5f3c0839b173f7f33415eb098331879e547d1d2d", "versionType": "git"}, {"status": "affected", "version": "9ce12d8be12c94334634dd57050444910415e45f", "lessThan": "c0d77e3441a92d0b4958193c9ac1c3f81c6f1d1c", "versionType": "git"}, {"status": "affected", "version": "9ce12d8be12c94334634dd57050444910415e45f", "lessThan": "72a4ec018c9e9bc52f4f80eb3afb5d6a6b752275", "versionType": "git"}, {"status": "affected", "version": "9ce12d8be12c94334634dd57050444910415e45f", "lessThan": "d3af6ca9a8c34bbd8cff32b469b84c9021c9e7e4", "versionType": "git"}], "programFiles": ["drivers/hid/hid-asus.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.10"}, {"status": "unaffected", "version": "0", "lessThan": "4.10", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.298", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.242", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.191", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.150", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.104", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.45", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.16.5", "versionType": "semver", "lessThanOrEqual": "6.16.*"}, {"status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/hid/hid-asus.c"], "defaultStatus": "affected"}]}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "affectedData": [{"vendor": "Siemens", "product": "SIMATIC CN 4100", "versions": [{"status": "affected", "version": "0", "lessThan": "V5.0", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2025-09-16T13:16:01.050", "references": [{"url": "https://git.kernel.org/stable/c/5f3c0839b173f7f33415eb098331879e547d1d2d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7170122e2ae4ab378c9cdf7cc54dea8b0abbbca5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/72a4ec018c9e9bc52f4f80eb3afb5d6a6b752275", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9a9e4a8317437bf944fa017c66e1e23a0368b5c7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a8ca8fe7f516d27ece3afb995c3bd4d07dcbe62c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c0d77e3441a92d0b4958193c9ac1c3f81c6f1d1c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d3af6ca9a8c34bbd8cff32b469b84c9021c9e7e4", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/eaae728e7335b5dbad70966e2bd520a731fdf7b2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html", "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: asus: fix UAF via HID_CLAIMED_INPUT validation\n\nAfter hid_hw_start() is called hidinput_connect() will eventually be\ncalled to set up the device with the input layer since the\nHID_CONNECT_DEFAULT connect mask is used. During hidinput_connect()\nall input and output reports are processed and corresponding hid_inputs\nare allocated and configured via hidinput_configure_usages(). This\nprocess involves slot tagging report fields and configuring usages\nby setting relevant bits in the capability bitmaps. However it is possible\nthat the capability bitmaps are not set at all leading to the subsequent\nhidinput_has_been_populated() check to fail leading to the freeing of the\nhid_input and the underlying input device.\n\nThis becomes problematic because a malicious HID device like a\nASUS ROG N-Key keyboard can trigger the above scenario via a\nspecially crafted descriptor which then leads to a user-after-free\nwhen the name of the freed input device is written to later on after\nhid_hw_start(). Below, report 93 intentionally utilises the\nHID_UP_UNDEFINED Usage Page which is skipped during usage\nconfiguration, leading to the frees.\n\n0x05, 0x0D, // Usage Page (Digitizer)\n0x09, 0x05, // Usage (Touch Pad)\n0xA1, 0x01, // Collection (Application)\n0x85, 0x0D, // Report ID (13)\n0x06, 0x00, 0xFF, // Usage Page (Vendor Defined 0xFF00)\n0x09, 0xC5, // Usage (0xC5)\n0x15, 0x00, // Logical Minimum (0)\n0x26, 0xFF, 0x00, // Logical Maximum (255)\n0x75, 0x08, // Report Size (8)\n0x95, 0x04, // Report Count (4)\n0xB1, 0x02, // Feature (Data,Var,Abs)\n0x85, 0x5D, // Report ID (93)\n0x06, 0x00, 0x00, // Usage Page (Undefined)\n0x09, 0x01, // Usage (0x01)\n0x15, 0x00, // Logical Minimum (0)\n0x26, 0xFF, 0x00, // Logical Maximum (255)\n0x75, 0x08, // Report Size (8)\n0x95, 0x1B, // Report Count (27)\n0x81, 0x02, // Input (Data,Var,Abs)\n0xC0, // End Collection\n\nBelow is the KASAN splat after triggering the UAF:\n\n[ 21.672709] ==================================================================\n[ 21.673700] BUG: KASAN: slab-use-after-free in asus_probe+0xeeb/0xf80\n[ 21.673700] Write of size 8 at addr ffff88810a0ac000 by task kworker/1:2/54\n[ 21.673700]\n[ 21.673700] CPU: 1 UID: 0 PID: 54 Comm: kworker/1:2 Not tainted 6.16.0-rc4-g9773391cf4dd-dirty #36 PREEMPT(voluntary)\n[ 21.673700] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\n[ 21.673700] Call Trace:\n[ 21.673700] <TASK>\n[ 21.673700] dump_stack_lvl+0x5f/0x80\n[ 21.673700] print_report+0xd1/0x660\n[ 21.673700] kasan_report+0xe5/0x120\n[ 21.673700] __asan_report_store8_noabort+0x1b/0x30\n[ 21.673700] asus_probe+0xeeb/0xf80\n[ 21.673700] hid_device_probe+0x2ee/0x700\n[ 21.673700] really_probe+0x1c6/0x6b0\n[ 21.673700] __driver_probe_device+0x24f/0x310\n[ 21.673700] driver_probe_device+0x4e/0x220\n[...]\n[ 21.673700]\n[ 21.673700] Allocated by task 54:\n[ 21.673700] kasan_save_stack+0x3d/0x60\n[ 21.673700] kasan_save_track+0x18/0x40\n[ 21.673700] kasan_save_alloc_info+0x3b/0x50\n[ 21.673700] __kasan_kmalloc+0x9c/0xa0\n[ 21.673700] __kmalloc_cache_noprof+0x139/0x340\n[ 21.673700] input_allocate_device+0x44/0x370\n[ 21.673700] hidinput_connect+0xcb6/0x2630\n[ 21.673700] hid_connect+0xf74/0x1d60\n[ 21.673700] hid_hw_start+0x8c/0x110\n[ 21.673700] asus_probe+0x5a3/0xf80\n[ 21.673700] hid_device_probe+0x2ee/0x700\n[ 21.673700] really_probe+0x1c6/0x6b0\n[ 21.673700] __driver_probe_device+0x24f/0x310\n[ 21.673700] driver_probe_device+0x4e/0x220\n[...]\n[ 21.673700]\n[ 21.673700] Freed by task 54:\n[ 21.673700] kasan_save_stack+0x3d/0x60\n[ 21.673700] kasan_save_track+0x18/0x40\n[ 21.673700] kasan_save_free_info+0x3f/0x60\n[ 21.673700] __kasan_slab_free+0x3c/0x50\n[ 21.673700] kfre\n---truncated---"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nHID: asus: corregir uso despu\u00e9s de liberaci\u00f3n (UAF) mediante la validaci\u00f3n HID_CLAIMED_INPUT\n\nDespu\u00e9s de que se llama a hid_hw_start(), hidinput_connect() ser\u00e1 eventualmente llamado para configurar el dispositivo con la capa de entrada, ya que se utiliza la m\u00e1scara de conexi\u00f3n HID_CONNECT_DEFAULT. Durante hidinput_connect(), todos los informes de entrada y salida son procesados y los hid_inputs correspondientes son asignados y configurados a trav\u00e9s de hidinput_configure_usages(). Este proceso implica el etiquetado de ranuras de los campos de informe y la configuraci\u00f3n de usos mediante el establecimiento de bits relevantes en los mapas de bits de capacidad. Sin embargo, es posible que los mapas de bits de capacidad no se establezcan en absoluto, lo que lleva a que la comprobaci\u00f3n posterior de hidinput_has_been_populated() falle, resultando en la liberaci\u00f3n del hid_input y del dispositivo de entrada subyacente.\n\nEsto se vuelve problem\u00e1tico porque un dispositivo HID malicioso como un teclado ASUS ROG N-Key puede desencadenar el escenario anterior a trav\u00e9s de un descriptor especialmente dise\u00f1ado, lo que luego conduce a un uso despu\u00e9s de liberaci\u00f3n cuando el nombre del dispositivo de entrada liberado se escribe m\u00e1s tarde despu\u00e9s de hid_hw_start(). A continuaci\u00f3n, el informe 93 utiliza intencionadamente la p\u00e1gina de uso HID_UP_UNDEFINED, que se omite durante la configuraci\u00f3n de uso, lo que lleva a las liberaciones.\n\n0x05, 0x0D, // Usage Page (Digitizer)\n0x09, 0x05, // Usage (Touch Pad)\n0xA1, 0x01, // Collection (Application)\n0x85, 0x0D, // Report ID (13)\n0x06, 0x00, 0xFF, // Usage Page (Vendor Defined 0xFF00)\n0x09, 0xC5, // Usage (0xC5)\n0x15, 0x00, // Logical Minimum (0)\n0x26, 0xFF, 0x00, // Logical Maximum (255)\n0x75, 0x08, // Report Size (8)\n0x95, 0x04, // Report Count (4)\n0xB1, 0x02, // Feature (Data,Var,Abs)\n0x85, 0x5D, // Report ID (93)\n0x06, 0x00, 0x00, // Usage Page (Undefined)\n0x09, 0x01, // Usage (0x01)\n0x15, 0x00, // Logical Minimum (0)\n0x26, 0xFF, 0x00, // Logical Maximum (255)\n0x75, 0x08, // Report Size (8)\n0x95, 0x1B, // Report Count (27)\n0x81, 0x02, // Input (Data,Var,Abs)\n0xC0, // End Collection\n\nA continuaci\u00f3n se muestra el 'splat' de KASAN despu\u00e9s de activar el uso despu\u00e9s de liberaci\u00f3n:\n\n[ 21.672709] ==================================================================\n[ 21.673700] BUG: KASAN: slab-use-after-free in asus_probe+0xeeb/0xf80\n[ 21.673700] Write of size 8 at addr ffff88810a0ac000 by task kworker/1:2/54\n[ 21.673700]\n[ 21.673700] CPU: 1 UID: 0 PID: 54 Comm: kworker/1:2 Not tainted 6.16.0-rc4-g9773391cf4dd-dirty #36 PREEMPT(voluntary)\n[ 21.673700] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\n[ 21.673700] Call Trace:\n[ 21.673700] <TASK>\n[ 21.673700] dump_stack_lvl+0x5f/0x80\n[ 21.673700] print_report+0xd1/0x660\n[ 21.673700] kasan_report+0xe5/0x120\n[ 21.673700] __asan_report_store8_noabort+0x1b/0x30\n[ 21.673700] asus_probe+0xeeb/0xf80\n[ 21.673700] hid_device_probe+0x2ee/0x700\n[ 21.673700] really_probe+0x1c6/0x6b0\n[ 21.673700] __driver_probe_device+0x24f/0x310\n[ 21.673700] driver_probe_device+0x4e/0x220\n[...]\n[ 21.673700]\n[ 21.673700] Allocated by task 54:\n[ 21.673700] kasan_save_stack+0x3d/0x60\n[ 21.673700] kasan_save_track+0x18/0x40\n[ 21.673700] kasan_save_alloc_info+0x3b/0x50\n[ 21.673700] __kasan_kmalloc+0x9c/0xa0\n[ 21.673700] __kmalloc_cache_noprof+0x139/0x340\n[ 21.673700] input_allocate_device+0x44/0x370\n[ 21.673700] hidinput_connect+0xcb6/0x2630\n[ 21.673700] hid_connect+0xf74/0x1d60\n[ 21.673700] hid_hw_start+0x8c/0x110\n[ 21.673700] asus_probe+0x5a3/0xf80\n[ 21.673700] hid_device_probe+0x2ee/0x700\n[ 21.673700] --TRUNCADO--"}], "lastModified": "2026-11-05T22:17:33.157", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92AEA158-0437-4D82-AE9B-763439A87C91", "versionEndExcluding": "5.4.298", "versionStartIncluding": "4.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CFAE7D1D-31D7-4259-8581-3CB64D12DE3B", "versionEndExcluding": "5.10.242", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A532F1D1-B7A9-4745-AB0E-B6AD12CAD0BD", "versionEndExcluding": "5.15.191", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "67AC87D5-97BF-4617-92EF-9E282B6D1CF7", "versionEndExcluding": "6.1.150", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FD12E3C3-F737-4936-9A57-80832E36D22F", "versionEndExcluding": "6.6.104", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DC443D7D-A411-41FB-BB45-010F36EF7C94", "versionEndExcluding": "6.12.45", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EB781080-7001-4FA1-B388-517FFEFBC73E", "versionEndExcluding": "6.16.5", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D"}], "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"}