CVE-2023-53065

Estado: ModificadaAlta (7.8)—

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

perf/core: Fix perf_output_begin parameter is incorrectly invoked in perf_event_bpf_output

commit 267fb27352b6 ("perf: Reduce stack usage of perf_output_begin()") use on-stack struct perf_sample_data of the caller function.

However, perf_event_bpf_output uses incorrect parameter to convert small-sized data (struct perf_bpf_event) into large-sized data (struct perf_sample_data), which causes memory overwriting occurs in __perf_event_header__init_id.

Detalles técnicos trazas, registros y código del informe original

syzkaller reportes a KASAN issue with stack-out-of-bounds.
The call trace is as follows:
  dump_stack+0x9c/0xd3
  print_address_description.constprop.0+0x19/0x170
  __kasan_report.cold+0x6c/0x84
  kasan_report+0x3a/0x50
  __perf_event_header__init_id+0x34/0x290
  perf_event_header__init_id+0x48/0x60
  perf_output_begin+0x4a4/0x560
  perf_event_bpf_output+0x161/0x1e0
  perf_iterate_sb_cpu+0x29e/0x340
  perf_iterate_sb+0x4c/0xc0
  perf_event_bpf_event+0x194/0x2c0
  __bpf_prog_put.constprop.0+0x55/0xf0
  __cls_bpf_delete_prog+0xea/0x120 [cls_bpf]
  cls_bpf_delete_prog_work+0x1c/0x30 [cls_bpf]
  process_one_work+0x3c2/0x730
  worker_thread+0x93/0x650
  kthread+0x1b8/0x210
  ret_from_fork+0x1f/0x30

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

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 principalT1059 Command and Scripting Interpreterexecution70 %
Impacto secundarioT1499.004 Application or System Exploitationimpact60 %

Vulnerabilidad de escritura fuera de límites (CWE-787) en kernel Linux con acceso local (AV:L, PR:L) sin interacción del usuario. Permite escalada de privilegios y ejecución de código arbitrario; el stack overflow puede causar DoS.

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

Execution Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Filter Network Traffic

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-787

Referencias

JSON original (NVD)

Mostrar

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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/core: Fix perf_output_begin parameter is incorrectly invoked in perf_event_bpf_output\n\nsyzkaller reportes a KASAN issue with stack-out-of-bounds.\nThe call trace is as follows:\n  dump_stack+0x9c/0xd3\n  print_address_description.constprop.0+0x19/0x170\n  __kasan_report.cold+0x6c/0x84\n  kasan_report+0x3a/0x50\n  __perf_event_header__init_id+0x34/0x290\n  perf_event_header__init_id+0x48/0x60\n  perf_output_begin+0x4a4/0x560\n  perf_event_bpf_output+0x161/0x1e0\n  perf_iterate_sb_cpu+0x29e/0x340\n  perf_iterate_sb+0x4c/0xc0\n  perf_event_bpf_event+0x194/0x2c0\n  __bpf_prog_put.constprop.0+0x55/0xf0\n  __cls_bpf_delete_prog+0xea/0x120 [cls_bpf]\n  cls_bpf_delete_prog_work+0x1c/0x30 [cls_bpf]\n  process_one_work+0x3c2/0x730\n  worker_thread+0x93/0x650\n  kthread+0x1b8/0x210\n  ret_from_fork+0x1f/0x30\n\ncommit 267fb27352b6 (\"perf: Reduce stack usage of perf_output_begin()\")\nuse on-stack struct perf_sample_data of the caller function.\n\nHowever, perf_event_bpf_output uses incorrect parameter to convert\nsmall-sized data (struct perf_bpf_event) into large-sized data\n(struct perf_sample_data), which causes memory overwriting occurs in\n__perf_event_header__init_id."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf/core: Se solucionó que el parámetro perf_output_begin se invocara incorrectamente en perf_event_bpf_output syzkaller informa un problema de KASAN con una pila fuera de los límites. El seguimiento de la llamada es el siguiente: dump_stack+0x9c/0xd3 print_address_description.constprop.0+0x19/0x170 __kasan_report.cold+0x6c/0x84 kasan_report+0x3a/0x50 __perf_event_header__init_id+0x34/0x290 perf_event_header__init_id+0x48/0x60 perf_output_begin+0x4a4/0x560 perf_event_bpf_output+0x161/0x1e0 perf_iterate_sb_cpu+0x29e/0x340 perf_iterate_sb+0x4c/0xc0 perf_event_bpf_event+0x194/0x2c0 __bpf_prog_put.constprop.0+0x55/0xf0 __cls_bpf_delete_prog+0xea/0x120 [cls_bpf] cls_bpf_delete_prog_work+0x1c/0x30 [cls_bpf] process_one_work+0x3c2/0x730 workers_thread+0x93/0x650 kthread+0x1b8/0x210 ret_from_fork+0x1f/0x30 commit 267fb27352b6 (\"perf: Reducir el uso de la pila de perf_output_begin()\") usa la estructura en pila perf_sample_data de la función que llama. Sin embargo, perf_event_bpf_output utiliza un parámetro incorrecto para convertir datos de tamaño pequeño (struct perf_bpf_event) en datos de tamaño grande (struct perf_sample_data), lo que provoca que se sobrescriba la memoria en __perf_event_header__init_id."
    }
  ],
  "lastModified": "2026-08-04T10:18:53.670",
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