CVE-2025-21948 (GCVE-0-2025-21948)
Vulnerability from cvelistv5
Published
2025-04-01 15:41
Modified
2025-11-03 19:39
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: appleir: Fix potential NULL dereference at raw event handle Syzkaller reports a NULL pointer dereference issue in input_event(). BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:68 [inline] BUG: KASAN: null-ptr-deref in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: null-ptr-deref in is_event_supported drivers/input/input.c:67 [inline] BUG: KASAN: null-ptr-deref in input_event+0x42/0xa0 drivers/input/input.c:395 Read of size 8 at addr 0000000000000028 by task syz-executor199/2949 CPU: 0 UID: 0 PID: 2949 Comm: syz-executor199 Not tainted 6.13.0-rc4-syzkaller-00076-gf097a36ef88d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:94 [inline] 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 [inline] kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] is_event_supported drivers/input/input.c:67 [inline] input_event+0x42/0xa0 drivers/input/input.c:395 input_report_key include/linux/input.h:439 [inline] key_down drivers/hid/hid-appleir.c:159 [inline] appleir_raw_event+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 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734 dummy_timer+0x17f7/0x3960 drivers/usb/gadget/udc/dummy_hcd.c:1993 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __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 [inline] invoke_softirq kernel/softirq.c:435 [inline] __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 [inline] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1049 </IRQ> <TASK> 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 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f </TASK> This happens due to the malformed report items sent by the emulated device which results in a report, that has no fields, being added to the report list. Due to this appleir_input_configured() is never called, hidinput_connect() fails which results in the HID_CLAIMED_INPUT flag is not being set. However, it does not make appleir_probe() fail and lets the event callback to be called without the associated input device. Thus, add a check for the HID_CLAIMED_INPUT flag and leave the event hook early if the driver didn't claim any input_dev for some reason. Moreover, some other hid drivers accessing input_dev in their event callbacks do have similar checks, too. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
References
Impacted products
Vendor Product Version
Linux Linux Version: 9a4a5574ce427c364d81746fc7fb82d86b5f1a7e
Version: 9a4a5574ce427c364d81746fc7fb82d86b5f1a7e
Version: 9a4a5574ce427c364d81746fc7fb82d86b5f1a7e
Version: 9a4a5574ce427c364d81746fc7fb82d86b5f1a7e
Version: 9a4a5574ce427c364d81746fc7fb82d86b5f1a7e
Version: 9a4a5574ce427c364d81746fc7fb82d86b5f1a7e
Version: 9a4a5574ce427c364d81746fc7fb82d86b5f1a7e
Version: 9a4a5574ce427c364d81746fc7fb82d86b5f1a7e
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          "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 \u003cIRQ\u003e\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 \u003c/IRQ\u003e\n \u003cTASK\u003e\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 \u003c/TASK\u003e\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\u0027t 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."
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        "dateUpdated": "2025-05-04T07:25:28.175Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        {
          "url": "https://git.kernel.org/stable/c/6db423b00940b05df2a1265d3c7eabafe9f1734c"
        },
        {
          "url": "https://git.kernel.org/stable/c/0df1ac8ee417ad76760ff076faa4518a4d861894"
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          "url": "https://git.kernel.org/stable/c/8d39eb8c5e14f2f0f441eed832ef8a7b654e6fee"
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          "url": "https://git.kernel.org/stable/c/2ff5baa9b5275e3acafdf7f2089f74cccb2f38d1"
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      "title": "HID: appleir: Fix potential NULL dereference at raw event handle",
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    "cveId": "CVE-2025-21948",
    "datePublished": "2025-04-01T15:41:09.949Z",
    "dateReserved": "2024-12-29T08:45:45.790Z",
    "dateUpdated": "2025-11-03T19:39:50.130Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
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    "nvd": "{\"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 \u003cIRQ\u003e\\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 \u003c/IRQ\u003e\\n \u003cTASK\u003e\\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 \u003c/TASK\u003e\\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\u0027t 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 l\u00ednea] ERROR: KASAN: null-ptr-deref en _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [en l\u00ednea] ERROR: KASAN: null-ptr-deref en is_event_supported drivers/input/input.c:67 [en l\u00ednea] ERROR: KASAN: null-ptr-deref en input_event+0x42/0xa0 drivers/input/input.c:395 Lectura de tama\u00f1o 8 en la direcci\u00f3n 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 l\u00ednea] 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 l\u00ednea] kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:68 [en l\u00ednea] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [en l\u00ednea] es_evento_compatible drivers/input/input.c:67 [en l\u00ednea] evento_entrada+0x42/0xa0 drivers/input/input.c:395 clave_informe_entrada include/linux/input.h:439 [en l\u00ednea] tecla_abajo drivers/hid/hid-appleir.c:159 [en l\u00ednea] 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 l\u00ednea] __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 l\u00ednea] invocar_softirq kernel/softirq.c:435 [en l\u00ednea] __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 l\u00ednea] 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 l\u00ednea] 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 devoluci\u00f3n de llamada del evento se llame sin el dispositivo de entrada asociado. Por lo tanto, se debe a\u00f1adir una comprobaci\u00f3n para el indicador HID_CLAIMED_INPUT y abandonar el gancho de evento antes de tiempo si el controlador no solicit\u00f3 ning\u00fan input_dev por alguna raz\u00f3n. Adem\u00e1s, otros controladores HID que acceden a input_dev en sus devoluciones de llamada de evento tambi\u00e9n tienen comprobaciones similares. Encontrado por el Centro de Verificaci\u00f3n 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\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T19:39:50.130Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"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\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-21948\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T17:17:14.096468Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T14:38:14.738Z\"}}], \"cna\": {\"title\": \"HID: appleir: Fix potential NULL dereference at raw event handle\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"9a4a5574ce427c364d81746fc7fb82d86b5f1a7e\", \"lessThan\": \"6db423b00940b05df2a1265d3c7eabafe9f1734c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9a4a5574ce427c364d81746fc7fb82d86b5f1a7e\", \"lessThan\": \"0df1ac8ee417ad76760ff076faa4518a4d861894\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9a4a5574ce427c364d81746fc7fb82d86b5f1a7e\", \"lessThan\": \"b1d95d733cd6e74f595653daddcfc357bea461e8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9a4a5574ce427c364d81746fc7fb82d86b5f1a7e\", \"lessThan\": \"8d39eb8c5e14f2f0f441eed832ef8a7b654e6fee\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9a4a5574ce427c364d81746fc7fb82d86b5f1a7e\", \"lessThan\": \"fc69e2c3219d433caabba4b5d6371ba726a4b37f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9a4a5574ce427c364d81746fc7fb82d86b5f1a7e\", \"lessThan\": \"d335fce8b88b2353f4bb20c631698e20384e3610\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9a4a5574ce427c364d81746fc7fb82d86b5f1a7e\", \"lessThan\": \"68cdf6710f228dfd74f66ec61fbe636da2646a73\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9a4a5574ce427c364d81746fc7fb82d86b5f1a7e\", \"lessThan\": \"2ff5baa9b5275e3acafdf7f2089f74cccb2f38d1\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/hid/hid-appleir.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.291\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.235\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.179\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.131\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.83\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.13.*\"}, {\"status\": \"unaffected\", \"version\": \"6.14\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/hid/hid-appleir.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/6db423b00940b05df2a1265d3c7eabafe9f1734c\"}, {\"url\": \"https://git.kernel.org/stable/c/0df1ac8ee417ad76760ff076faa4518a4d861894\"}, {\"url\": \"https://git.kernel.org/stable/c/b1d95d733cd6e74f595653daddcfc357bea461e8\"}, {\"url\": \"https://git.kernel.org/stable/c/8d39eb8c5e14f2f0f441eed832ef8a7b654e6fee\"}, {\"url\": \"https://git.kernel.org/stable/c/fc69e2c3219d433caabba4b5d6371ba726a4b37f\"}, {\"url\": \"https://git.kernel.org/stable/c/d335fce8b88b2353f4bb20c631698e20384e3610\"}, {\"url\": \"https://git.kernel.org/stable/c/68cdf6710f228dfd74f66ec61fbe636da2646a73\"}, {\"url\": \"https://git.kernel.org/stable/c/2ff5baa9b5275e3acafdf7f2089f74cccb2f38d1\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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 \u003cIRQ\u003e\\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 \u003c/IRQ\u003e\\n \u003cTASK\u003e\\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 \u003c/TASK\u003e\\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\u0027t 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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.291\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.235\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.179\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.131\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.83\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.19\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13.7\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.14\", \"versionStartIncluding\": \"3.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:25:28.175Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-21948\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T19:39:50.130Z\", \"dateReserved\": \"2024-12-29T08:45:45.790Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-04-01T15:41:09.949Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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