{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-08T12:47:52.705","vulnerabilities":[{"cve":{"id":"CVE-2025-21948","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-04-01T16:15:25.933","lastModified":"2025-11-03T20:17:31.737","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: appleir: Fix potential NULL dereference at raw event handle\n\nSyzkaller reports a NULL pointer dereference issue in input_event().\n\nBUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:68 [inline]\nBUG: KASAN: null-ptr-deref in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]\nBUG: KASAN: null-ptr-deref in is_event_supported drivers/input/input.c:67 [inline]\nBUG: KASAN: null-ptr-deref in input_event+0x42/0xa0 drivers/input/input.c:395\nRead of size 8 at addr 0000000000000028 by task syz-executor199/2949\n\nCPU: 0 UID: 0 PID: 2949 Comm: syz-executor199 Not tainted 6.13.0-rc4-syzkaller-00076-gf097a36ef88d #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\nCall Trace:\n <IRQ>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n kasan_report+0xd9/0x110 mm/kasan/report.c:602\n check_region_inline mm/kasan/generic.c:183 [inline]\n kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189\n instrument_atomic_read include/linux/instrumented.h:68 [inline]\n _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]\n is_event_supported drivers/input/input.c:67 [inline]\n input_event+0x42/0xa0 drivers/input/input.c:395\n input_report_key include/linux/input.h:439 [inline]\n key_down drivers/hid/hid-appleir.c:159 [inline]\n appleir_raw_event+0x3e5/0x5e0 drivers/hid/hid-appleir.c:232\n __hid_input_report.constprop.0+0x312/0x440 drivers/hid/hid-core.c:2111\n hid_ctrl+0x49f/0x550 drivers/hid/usbhid/hid-core.c:484\n __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650\n usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734\n dummy_timer+0x17f7/0x3960 drivers/usb/gadget/udc/dummy_hcd.c:1993\n __run_hrtimer kernel/time/hrtimer.c:1739 [inline]\n __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803\n hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1820\n handle_softirqs+0x206/0x8d0 kernel/softirq.c:561\n __do_softirq kernel/softirq.c:595 [inline]\n invoke_softirq kernel/softirq.c:435 [inline]\n __irq_exit_rcu+0xfa/0x160 kernel/softirq.c:662\n irq_exit_rcu+0x9/0x30 kernel/softirq.c:678\n instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]\n sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1049\n </IRQ>\n <TASK>\n asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702\n __mod_timer+0x8f6/0xdc0 kernel/time/timer.c:1185\n add_timer+0x62/0x90 kernel/time/timer.c:1295\n schedule_timeout+0x11f/0x280 kernel/time/sleep_timeout.c:98\n usbhid_wait_io+0x1c7/0x380 drivers/hid/usbhid/hid-core.c:645\n usbhid_init_reports+0x19f/0x390 drivers/hid/usbhid/hid-core.c:784\n hiddev_ioctl+0x1133/0x15b0 drivers/hid/usbhid/hiddev.c:794\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:906 [inline]\n __se_sys_ioctl fs/ioctl.c:892 [inline]\n __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n </TASK>\n\nThis happens due to the malformed report items sent by the emulated device\nwhich results in a report, that has no fields, being added to the report list.\nDue to this appleir_input_configured() is never called, hidinput_connect()\nfails which results in the HID_CLAIMED_INPUT flag is not being set. However,\nit  does not make appleir_probe() fail and lets the event callback to be\ncalled without the associated input device.\n\nThus, add a check for the HID_CLAIMED_INPUT flag and leave the event hook\nearly if the driver didn't claim any input_dev for some reason. Moreover,\nsome other hid drivers accessing input_dev in their event callbacks do have\nsimilar checks, too.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: HID: appleir: Se corrige una posible desreferencia de puntero NULL en el identificador de evento sin procesar Syzkaller informa un problema de desreferencia de puntero NULL en input_event(). ERROR: KASAN: null-ptr-deref en instrument_atomic_read include/linux/instrumented.h:68 [en línea] ERROR: KASAN: null-ptr-deref en _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [en línea] ERROR: KASAN: null-ptr-deref en is_event_supported drivers/input/input.c:67 [en línea] ERROR: KASAN: null-ptr-deref en input_event+0x42/0xa0 drivers/input/input.c:395 Lectura de tamaño 8 en la dirección 0000000000000028 por la tarea syz-executor199/2949 CPU: 0 UID: 0 PID: 2949 Comm: syz-executor199 No contaminado 6.13.0-rc4-syzkaller-00076-gf097a36ef88d #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 13/09/2024 Rastreo de llamadas:  __dump_stack lib/dump_stack.c:94 [en línea] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 kasan_report+0xd9/0x110 mm/kasan/report.c:602 check_region_inline mm/kasan/generic.c:183 [en línea] kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:68 [en línea] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [en línea] es_evento_compatible drivers/input/input.c:67 [en línea] evento_entrada+0x42/0xa0 drivers/input/input.c:395 clave_informe_entrada include/linux/input.h:439 [en línea] tecla_abajo drivers/hid/hid-appleir.c:159 [en línea] evento_sin_usar_appleir+0x3e5/0x5e0 drivers/hid/hid-appleir.c:232 __hid_input_report.constprop.0+0x312/0x440 drivers/hid/hid-core.c:2111 hid_ctrl+0x49f/0x550 drivers/hid/usbhid/hid-core.c:484 __usb_hcd_giveback_urb+0x389/0x6e0 controladores/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x396/0x450 controladores/usb/core/hcd.c:1734 temporizador ficticio+0x17f7/0x3960 controladores/usb/gadget/udc/dummy_hcd.c:1993 __run_hrtimer kernel/time/hrtimer.c:1739 [en línea] __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1820 handle_softirqs+0x206/0x8d0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [en línea] invocar_softirq kernel/softirq.c:435 [en línea] __irq_exit_rcu+0xfa/0x160 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [en línea] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1049   asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 __mod_timer+0x8f6/0xdc0 kernel/time/timer.c:1185 add_timer+0x62/0x90 kernel/time/timer.c:1295 schedule_timeout+0x11f/0x280 kernel/time/sleep_timeout.c:98 usbhid_wait_io+0x1c7/0x380 drivers/hid/usbhid/hid-core.c:645 usbhid_init_reports+0x19f/0x390 drivers/hid/usbhid/hid-core.c:784 hiddev_ioctl+0x1133/0x15b0 drivers/hid/usbhid/hiddev.c:794 vfs_ioctl fs/ioctl.c:51 [en línea] Esto sucede debido a los elementos de informe mal formados enviados por el dispositivo emulado, lo que da como resultado que se agregue a la lista de informes un informe que no tiene campos. Debido a que appleir_input_configured() nunca se llama, hidinput_connect() falla, lo que provoca que no se configure el indicador HID_CLAIMED_INPUT. Sin embargo, esto no provoca el fallo de appleir_probe() y permite que la devolución de llamada del evento se llame sin el dispositivo de entrada asociado. Por lo tanto, se debe añadir una comprobación para el indicador HID_CLAIMED_INPUT y abandonar el gancho de evento antes de tiempo si el controlador no solicitó ningún input_dev por alguna razón. Además, otros controladores HID que acceden a input_dev en sus devoluciones de llamada de evento también tienen comprobaciones similares. Encontrado por el Centro de Verificación de Linux (linuxtesting.org) con Syzkaller."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-476"}]},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.4.291","matchCriteriaId":"0ACA7A2C-C4C2-4035-B2FD-0D544B71CC80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.235","matchCriteriaId":"545121FA-DE31-4154-9446-C2000FB4104D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.179","matchCriteriaId":"C708062C-4E1B-465F-AE6D-C09C46400875"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.131","matchCriteriaId":"BA9C2DE3-D37C-46C6-8DCD-2EE509456E0B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.83","matchCriteriaId":"7D9F642F-6E05-4926-B0FE-62F95B7266BC"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.19","matchCriteriaId":"32865E5C-8AE1-4D3D-A64D-299039694A88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.13.7","matchCriteriaId":"842F5A44-3E71-4546-B4FD-43B0ACE3F32B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*","matchCriteriaId":"186716B6-2B66-4BD0-852E-D48E71C0C85F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*","matchCriteriaId":"0D3E781C-403A-498F-9DA9-ECEE50F41E75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*","matchCriteriaId":"66619FB8-0AAF-4166-B2CF-67B24143261D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*","matchCriteriaId":"D3D6550E-6679-4560-902D-AF52DCFE905B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*","matchCriteriaId":"45B90F6B-BEC7-4D4E-883A-9DBADE021750"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0df1ac8ee417ad76760ff076faa4518a4d861894","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/2ff5baa9b5275e3acafdf7f2089f74cccb2f38d1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/68cdf6710f228dfd74f66ec61fbe636da2646a73","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6db423b00940b05df2a1265d3c7eabafe9f1734c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/8d39eb8c5e14f2f0f441eed832ef8a7b654e6fee","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b1d95d733cd6e74f595653daddcfc357bea461e8","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/d335fce8b88b2353f4bb20c631698e20384e3610","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/fc69e2c3219d433caabba4b5d6371ba726a4b37f","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}]}