CVE-2023-53135

Estado: AnalizadaAlta (7.1)—

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

riscv: Use READ_ONCE_NOCHECK in imprecise unwinding stack mode

When CONFIG_FRAME_POINTER is unset, the stack unwinding function walk_stackframe randomly reads the stack and then, when KASAN is enabled, it can lead to the following backtrace:

Fix that by using READ_ONCE_NOCHECK when reading the stack in imprecise mode.

Detalles técnicos trazas, registros y código del informe original

[    0.000000] ==================================================================
[    0.000000] BUG: KASAN: stack-out-of-bounds in walk_stackframe+0xa6/0x11a
[    0.000000] Read of size 8 at addr ffffffff81807c40 by task swapper/0
[    0.000000]
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.2.0-12919-g24203e6db61f #43
[    0.000000] Hardware name: riscv-virtio,qemu (DT)
[    0.000000] Call Trace:
[    0.000000] [<ffffffff80007ba8>] walk_stackframe+0x0/0x11a
[    0.000000] [<ffffffff80099ecc>] init_param_lock+0x26/0x2a
[    0.000000] [<ffffffff80007c4a>] walk_stackframe+0xa2/0x11a
[    0.000000] [<ffffffff80c49c80>] dump_stack_lvl+0x22/0x36
[    0.000000] [<ffffffff80c3783e>] print_report+0x198/0x4a8
[    0.000000] [<ffffffff80099ecc>] init_param_lock+0x26/0x2a
[    0.000000] [<ffffffff80007c4a>] walk_stackframe+0xa2/0x11a
[    0.000000] [<ffffffff8015f68a>] kasan_report+0x9a/0xc8
[    0.000000] [<ffffffff80007c4a>] walk_stackframe+0xa2/0x11a
[    0.000000] [<ffffffff80007c4a>] walk_stackframe+0xa2/0x11a
[    0.000000] [<ffffffff8006e99c>] desc_make_final+0x80/0x84
[    0.000000] [<ffffffff8009a04e>] stack_trace_save+0x88/0xa6
[    0.000000] [<ffffffff80099fc2>] filter_irq_stacks+0x72/0x76
[    0.000000] [<ffffffff8006b95e>] devkmsg_read+0x32a/0x32e
[    0.000000] [<ffffffff8015ec16>] kasan_save_stack+0x28/0x52
[    0.000000] [<ffffffff8006e998>] desc_make_final+0x7c/0x84
[    0.000000] [<ffffffff8009a04a>] stack_trace_save+0x84/0xa6
[    0.000000] [<ffffffff8015ec52>] kasan_set_track+0x12/0x20
[    0.000000] [<ffffffff8015f22e>] __kasan_slab_alloc+0x58/0x5e
[    0.000000] [<ffffffff8015e7ea>] __kmem_cache_create+0x21e/0x39a
[    0.000000] [<ffffffff80e133ac>] create_boot_cache+0x70/0x9c
[    0.000000] [<ffffffff80e17ab2>] kmem_cache_init+0x6c/0x11e
[    0.000000] [<ffffffff80e00fd6>] mm_init+0xd8/0xfe
[    0.000000] [<ffffffff80e011d8>] start_kernel+0x190/0x3ca
[    0.000000]
[    0.000000] The buggy address belongs to stack of task swapper/0
[    0.000000]  and is located at offset 0 in frame:
[    0.000000]  stack_trace_save+0x0/0xa6
[    0.000000]
[    0.000000] This frame has 1 object:
[    0.000000]  [32, 56) 'c'
[    0.000000]
[    0.000000] The buggy address belongs to the physical page:
[    0.000000] page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x81a07
[    0.000000] flags: 0x1000(reserved|zone=0)
[    0.000000] raw: 0000000000001000 ff600003f1e3d150 ff600003f1e3d150 0000000000000000
[    0.000000] raw: 0000000000000000 0000000000000000 00000001ffffffff
[    0.000000] page dumped because: kasan: bad access detected
[    0.000000]
[    0.000000] Memory state around the buggy address:
[    0.000000]  ffffffff81807b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[    0.000000]  ffffffff81807b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[    0.000000] >ffffffff81807c00: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 f3
[    0.000000]                                            ^
[    0.000000]  ffffffff81807c80: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
[    0.000000]  ffffffff81807d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[    0.000000] ==================================================================

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: 0.19%
Percentil entre todas las CVEs puntuadas: 8
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 escalation65 %
Impacto principalT1005 Data from Local Systemcollection70 %

Vulnerabilidad local (AV:L) sin interacción de usuario que permite lectura de memoria fuera de límites (CWE-125: out-of-bounds read) en la pila del kernel, explotable por usuario local con permisos (PR:L) para acceder a datos sensibles del sistema.

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 Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software Data Loss Prevention

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-125

Referencias

JSON original (NVD)

Mostrar

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    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: Use READ_ONCE_NOCHECK in imprecise unwinding stack mode\n\nWhen CONFIG_FRAME_POINTER is unset, the stack unwinding function\nwalk_stackframe randomly reads the stack and then, when KASAN is enabled,\nit can lead to the following backtrace:\n\n[    0.000000] ==================================================================\n[    0.000000] BUG: KASAN: stack-out-of-bounds in walk_stackframe+0xa6/0x11a\n[    0.000000] Read of size 8 at addr ffffffff81807c40 by task swapper/0\n[    0.000000]\n[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.2.0-12919-g24203e6db61f #43\n[    0.000000] Hardware name: riscv-virtio,qemu (DT)\n[    0.000000] Call Trace:\n[    0.000000] [<ffffffff80007ba8>] walk_stackframe+0x0/0x11a\n[    0.000000] [<ffffffff80099ecc>] init_param_lock+0x26/0x2a\n[    0.000000] [<ffffffff80007c4a>] walk_stackframe+0xa2/0x11a\n[    0.000000] [<ffffffff80c49c80>] dump_stack_lvl+0x22/0x36\n[    0.000000] [<ffffffff80c3783e>] print_report+0x198/0x4a8\n[    0.000000] [<ffffffff80099ecc>] init_param_lock+0x26/0x2a\n[    0.000000] [<ffffffff80007c4a>] walk_stackframe+0xa2/0x11a\n[    0.000000] [<ffffffff8015f68a>] kasan_report+0x9a/0xc8\n[    0.000000] [<ffffffff80007c4a>] walk_stackframe+0xa2/0x11a\n[    0.000000] [<ffffffff80007c4a>] walk_stackframe+0xa2/0x11a\n[    0.000000] [<ffffffff8006e99c>] desc_make_final+0x80/0x84\n[    0.000000] [<ffffffff8009a04e>] stack_trace_save+0x88/0xa6\n[    0.000000] [<ffffffff80099fc2>] filter_irq_stacks+0x72/0x76\n[    0.000000] [<ffffffff8006b95e>] devkmsg_read+0x32a/0x32e\n[    0.000000] [<ffffffff8015ec16>] kasan_save_stack+0x28/0x52\n[    0.000000] [<ffffffff8006e998>] desc_make_final+0x7c/0x84\n[    0.000000] [<ffffffff8009a04a>] stack_trace_save+0x84/0xa6\n[    0.000000] [<ffffffff8015ec52>] kasan_set_track+0x12/0x20\n[    0.000000] [<ffffffff8015f22e>] __kasan_slab_alloc+0x58/0x5e\n[    0.000000] [<ffffffff8015e7ea>] __kmem_cache_create+0x21e/0x39a\n[    0.000000] [<ffffffff80e133ac>] create_boot_cache+0x70/0x9c\n[    0.000000] [<ffffffff80e17ab2>] kmem_cache_init+0x6c/0x11e\n[    0.000000] [<ffffffff80e00fd6>] mm_init+0xd8/0xfe\n[    0.000000] [<ffffffff80e011d8>] start_kernel+0x190/0x3ca\n[    0.000000]\n[    0.000000] The buggy address belongs to stack of task swapper/0\n[    0.000000]  and is located at offset 0 in frame:\n[    0.000000]  stack_trace_save+0x0/0xa6\n[    0.000000]\n[    0.000000] This frame has 1 object:\n[    0.000000]  [32, 56) 'c'\n[    0.000000]\n[    0.000000] The buggy address belongs to the physical page:\n[    0.000000] page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x81a07\n[    0.000000] flags: 0x1000(reserved|zone=0)\n[    0.000000] raw: 0000000000001000 ff600003f1e3d150 ff600003f1e3d150 0000000000000000\n[    0.000000] raw: 0000000000000000 0000000000000000 00000001ffffffff\n[    0.000000] page dumped because: kasan: bad access detected\n[    0.000000]\n[    0.000000] Memory state around the buggy address:\n[    0.000000]  ffffffff81807b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[    0.000000]  ffffffff81807b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[    0.000000] >ffffffff81807c00: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 f3\n[    0.000000]                                            ^\n[    0.000000]  ffffffff81807c80: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00\n[    0.000000]  ffffffff81807d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[    0.000000] ==================================================================\n\nFix that by using READ_ONCE_NOCHECK when reading the stack in imprecise\nmode."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: riscv: Usar READ_ONCE_NOCHECK en modo de desenrollado de pila impreciso Cuando no se establece CONFIG_FRAME_POINTER, la función de desenrollado de pila walk_stackframe lee la pila aleatoriamente y luego, cuando KASAN está habilitado, puede llevar al siguiente backtrace: [ 0.000000] ===================================================================== [ 0.000000] ERROR: KASAN: pila fuera de los límites en walk_stackframe+0xa6/0x11a [ 0.000000] Lectura de tamaño 8 en la dirección ffffffff81807c40 por tarea swapper/0 [ 0.000000] [ 0.000000] CPU: 0 PID: 0 Comm: swapper No contaminado 6.2.0-12919-g24203e6db61f #43 [ 0.000000] Nombre del hardware: riscv-virtio,qemu (DT) [ 0.000000] Rastreo de llamadas: [ 0.000000] [] walk_stackframe+0x0/0x11a [ 0.000000] [] init_param_lock+0x26/0x2a [ 0.000000] [] walk_stackframe+0xa2/0x11a [ 0.000000] [] dump_stack_lvl+0x22/0x36 [ 0.000000] [] print_report+0x198/0x4a8 [ 0.000000] [] init_param_lock+0x26/0x2a [ 0.000000] [] walk_stackframe+0xa2/0x11a [ 0.000000] [] kasan_report+0x9a/0xc8 [ 0.000000] [] walk_stackframe+0xa2/0x11a [ 0.000000] [] walk_stackframe+0xa2/0x11a [ 0.000000] [] desc_make_final+0x80/0x84 [ 0.000000] [] stack_trace_save+0x88/0xa6 [ 0.000000] [] filter_irq_stacks+0x72/0x76 [ 0.000000] [] devkmsg_read+0x32a/0x32e [ 0.000000] [] kasan_save_stack+0x28/0x52 [ 0.000000] [] desc_make_final+0x7c/0x84 [ 0.000000] [] stack_trace_save+0x84/0xa6 [ 0.000000] [] kasan_set_track+0x12/0x20 [ 0.000000] [] __kasan_slab_alloc+0x58/0x5e [ 0.000000] [] __kmem_cache_create+0x21e/0x39a [ 0.000000] [] create_boot_cache+0x70/0x9c [ 0.000000] [] kmem_cache_init+0x6c/0x11e [ 0.000000] [] mm_init+0xd8/0xfe [ 0.000000] [] start_kernel+0x190/0x3ca [ 0.000000] [ 0.000000] The buggy address belongs to stack of task swapper/0 [ 0.000000] and is located at offset 0 in frame: [ 0.000000] stack_trace_save+0x0/0xa6 [ 0.000000] [ 0.000000] This frame has 1 object: [ 0.000000] [32, 56) 'c' [ 0.000000] [ 0.000000] The buggy address belongs to the physical page: [ 0.000000] page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x81a07 [ 0.000000] flags: 0x1000(reserved|zone=0) [ 0.000000] raw: 0000000000001000 ff600003f1e3d150 ff600003f1e3d150 0000000000000000 [ 0.000000] raw: 0000000000000000 0000000000000000 00000001ffffffff [ 0.000000] page dumped because: kasan: bad access detected [ 0.000000] [ 0.000000] Memory state around the buggy address: [ 0.000000] ffffffff81807b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 0.000000] ffffffff81807b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 0.000000] &gt;ffffffff81807c00: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 f3 [ 0.000000] ^ [ 0.000000] ffffffff81807c80: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 [ 0.000000] ffffffff81807d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 0.000000] ================================================================== Solucione esto usando READ_ONCE_NOCHECK al leer la pila en modo impreciso."
    }
  ],
  "lastModified": "2026-06-17T06:44:21.740",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1C307F17-DB4B-4969-90E7-0C6FD7266396",
              "versionEndExcluding": "5.4.237",
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            },
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              "matchCriteriaId": "7A57CCEF-C453-48CE-9A6E-71A03C369F61",
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              "matchCriteriaId": "B8E3B0E8-FA27-4305-87BB-AF6C25B160CB"
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          "operator": "OR"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}