CVE-2023-53090

Estado: ModificadaAlta (7.1)—

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: Fix an illegal memory access

In the kfd_wait_on_events() function, the kfd_event_waiter structure is allocated by alloc_event_waiters(), but the event field of the waiter structure is not initialized; When copy_from_user() fails in the kfd_wait_on_events() function, it will enter exception handling to release the previously allocated memory of the waiter structure; Due to the event field of the waiters structure being accessed in the free_waiters() function, this results in illegal memory access and system crash, here is the crash log:

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Allocate the structure with kcalloc, and remove redundant 0-initialization and a redundant loop condition check.

Detalles técnicos trazas, registros y código del informe original

localhost kernel: RIP: 0010:native_queued_spin_lock_slowpath+0x185/0x1e0
localhost kernel: RSP: 0018:ffffaa53c362bd60 EFLAGS: 00010082
localhost kernel: RAX: ff3d3d6bff4007cb RBX: 0000000000000282 RCX: 00000000002c0000
localhost kernel: RDX: ffff9e855eeacb80 RSI: 000000000000279c RDI: ffffe7088f6a21d0
localhost kernel: RBP: ffffe7088f6a21d0 R08: 00000000002c0000 R09: ffffaa53c362be64
localhost kernel: R10: ffffaa53c362bbd8 R11: 0000000000000001 R12: 0000000000000002
localhost kernel: R13: ffff9e7ead15d600 R14: 0000000000000000 R15: ffff9e7ead15d698
localhost kernel: FS:  0000152a3d111700(0000) GS:ffff9e855ee80000(0000) knlGS:0000000000000000
localhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
localhost kernel: CR2: 0000152938000010 CR3: 000000044d7a4000 CR4: 00000000003506e0
localhost kernel: Call Trace:
localhost kernel: _raw_spin_lock_irqsave+0x30/0x40
localhost kernel: remove_wait_queue+0x12/0x50
localhost kernel: kfd_wait_on_events+0x1b6/0x490 [hydcu]
localhost kernel: ? ftrace_graph_caller+0xa0/0xa0
localhost kernel: kfd_ioctl+0x38c/0x4a0 [hydcu]
localhost kernel: ? kfd_ioctl_set_trap_handler+0x70/0x70 [hydcu]
localhost kernel: ? kfd_ioctl_create_queue+0x5a0/0x5a0 [hydcu]
localhost kernel: ? ftrace_graph_caller+0xa0/0xa0
localhost kernel: __x64_sys_ioctl+0x8e/0xd0
localhost kernel: ? syscall_trace_enter.isra.18+0x143/0x1b0
localhost kernel: do_syscall_64+0x33/0x80
localhost kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
localhost kernel: RIP: 0033:0x152a4dff68d7

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Puntuación base: 7.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.21%
Percentil entre todas las CVEs puntuadas: 11
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1499.004 Application or System Exploitationimpact80 %

Acceso local (AV:L) sin interacción del usuario permite provocar lectura de memoria no inicializada y crash del kernel (DoS); CWE-125 (out-of-bounds read) en estructura no inicializada durante manejo de excepciones.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence Program Filter Network Traffic Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-125

Referencias

JSON original (NVD)

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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix an illegal memory access\n\nIn the kfd_wait_on_events() function, the kfd_event_waiter structure is\nallocated by alloc_event_waiters(), but the event field of the waiter\nstructure is not initialized; When copy_from_user() fails in the\nkfd_wait_on_events() function, it will enter exception handling to\nrelease the previously allocated memory of the waiter structure;\nDue to the event field of the waiters structure being accessed\nin the free_waiters() function, this results in illegal memory access\nand system crash, here is the crash log:\n\nlocalhost kernel: RIP: 0010:native_queued_spin_lock_slowpath+0x185/0x1e0\nlocalhost kernel: RSP: 0018:ffffaa53c362bd60 EFLAGS: 00010082\nlocalhost kernel: RAX: ff3d3d6bff4007cb RBX: 0000000000000282 RCX: 00000000002c0000\nlocalhost kernel: RDX: ffff9e855eeacb80 RSI: 000000000000279c RDI: ffffe7088f6a21d0\nlocalhost kernel: RBP: ffffe7088f6a21d0 R08: 00000000002c0000 R09: ffffaa53c362be64\nlocalhost kernel: R10: ffffaa53c362bbd8 R11: 0000000000000001 R12: 0000000000000002\nlocalhost kernel: R13: ffff9e7ead15d600 R14: 0000000000000000 R15: ffff9e7ead15d698\nlocalhost kernel: FS:  0000152a3d111700(0000) GS:ffff9e855ee80000(0000) knlGS:0000000000000000\nlocalhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nlocalhost kernel: CR2: 0000152938000010 CR3: 000000044d7a4000 CR4: 00000000003506e0\nlocalhost kernel: Call Trace:\nlocalhost kernel: _raw_spin_lock_irqsave+0x30/0x40\nlocalhost kernel: remove_wait_queue+0x12/0x50\nlocalhost kernel: kfd_wait_on_events+0x1b6/0x490 [hydcu]\nlocalhost kernel: ? ftrace_graph_caller+0xa0/0xa0\nlocalhost kernel: kfd_ioctl+0x38c/0x4a0 [hydcu]\nlocalhost kernel: ? kfd_ioctl_set_trap_handler+0x70/0x70 [hydcu]\nlocalhost kernel: ? kfd_ioctl_create_queue+0x5a0/0x5a0 [hydcu]\nlocalhost kernel: ? ftrace_graph_caller+0xa0/0xa0\nlocalhost kernel: __x64_sys_ioctl+0x8e/0xd0\nlocalhost kernel: ? syscall_trace_enter.isra.18+0x143/0x1b0\nlocalhost kernel: do_syscall_64+0x33/0x80\nlocalhost kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9\nlocalhost kernel: RIP: 0033:0x152a4dff68d7\n\nAllocate the structure with kcalloc, and remove redundant 0-initialization\nand a redundant loop condition check."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amdkfd: Se corrige un acceso ilegal a memoria En la función kfd_wait_on_events(), la estructura kfd_event_waiter es asignada por alloc_event_waiters(), pero el campo de evento de la estructura waiter no se inicializa; Cuando copy_from_user() falla en la función kfd_wait_on_events(), ingresará al control de excepciones para liberar la memoria previamente asignada de la estructura waiter; Debido a que se accede al campo de evento de la estructura waiters en la función free_waiters(), esto da como resultado un acceso ilegal a la memoria y un bloqueo del sistema. Aquí está el registro de bloqueo: kernel localhost: RIP: 0010:native_queued_spin_lock_slowpath+0x185/0x1e0 kernel localhost: RSP: 0018:ffffaa53c362bd60 EFLAGS: 00010082 kernel localhost: RAX: ff3d3d6bff4007cb RBX: 0000000000000282 RCX: 00000000002c0000 kernel localhost: RDX: ffff9e855eeacb80 RSI: 000000000000279c RDI: ffffe7088f6a21d0 kernel localhost: RBP: ffffe7088f6a21d0 R08: 00000000002c0000 R09: ffffaa53c362be64 núcleo del host local: R10: ffffaa53c362bbd8 R11: 0000000000000001 R12: 0000000000000002 núcleo del host local: R13: ffff9e7ead15d600 R14: 0000000000000000 R15: ffff9e7ead15d698 núcleo del host local: FS: 0000152a3d111700(0000) GS:ffff9e855ee80000(0000) knlGS:0000000000000000 núcleo localhost: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 núcleo localhost: CR2: 0000152938000010 CR3: 000000044d7a4000 CR4: 00000000003506e0 núcleo localhost: Seguimiento de llamadas: núcleo localhost: _raw_spin_lock_irqsave+0x30/0x40 núcleo localhost: remove_wait_queue+0x12/0x50 núcleo localhost: kfd_wait_on_events+0x1b6/0x490 [hydcu] núcleo localhost: ? ftrace_graph_caller+0xa0/0xa0 núcleo local del host: kfd_ioctl+0x38c/0x4a0 [hydcu] núcleo local del host: ? kfd_ioctl_set_trap_handler+0x70/0x70 [hydcu] núcleo local del host: ? kfd_ioctl_create_queue+0x5a0/0x5a0 [hydcu] núcleo local del host: ? ftrace_graph_caller+0xa0/0xa0 núcleo local del host: __x64_sys_ioctl+0x8e/0xd0 núcleo local del host: ? syscall_trace_enter.isra.18+0x143/0x1b0 kernel localhost: do_syscall_64+0x33/0x80 kernel localhost: entry_SYSCALL_64_after_hwframe+0x44/0xa9 kernel localhost: RIP: 0033:0x152a4dff68d7 Asigne la estructura con kcalloc y elimine la inicialización 0 redundante y una verificación de condición de bucle redundante."
    }
  ],
  "lastModified": "2026-08-04T10:18:54.770",
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