CVE-2026-53144

Estado: AnalizadaMedia (5.5)—

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

drm/amdkfd: fix NULL dereference in get_queue_ids()

When usr_queue_id_array is NULL and num_queues is non-zero, get_queue_ids() returns NULL. The callers check only IS_ERR() on the return value; since IS_ERR(NULL) == false the check passes, and suspend_queues() calls q_array_invalidate() which immediately dereferences NULL while iterating num_queues times.

Userspace can trigger this via kfd_ioctl_set_debug_trap() by supplying num_queues > 0 with a zero queue_array_ptr, causing a kernel panic.

A NULL usr_queue_id_array with num_queues == 0 is a legitimate no-op (q_array_invalidate never executes, and resume_queues already guards all queue_ids dereferences behind a NULL check).

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Return ERR_PTR(-EINVAL) only when num_queues is non-zero and the pointer is absent; both callers already propagate IS_ERR() returns correctly to userspace.

(cherry picked from commit f165a82cdf503884bb1797771c61b2fcc72113d4)

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.12%
Percentil entre todas las CVEs puntuadas: 2
Fecha de la puntuación: 4/10/2026

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).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-476

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix NULL dereference in get_queue_ids()\n\nWhen usr_queue_id_array is NULL and num_queues is non-zero,\nget_queue_ids() returns NULL. The callers check only IS_ERR() on the\nreturn value; since IS_ERR(NULL) == false the check passes, and\nsuspend_queues() calls q_array_invalidate() which immediately\ndereferences NULL while iterating num_queues times.\n\nUserspace can trigger this via kfd_ioctl_set_debug_trap() by supplying\nnum_queues > 0 with a zero queue_array_ptr, causing a kernel panic.\n\nA NULL usr_queue_id_array with num_queues == 0 is a legitimate no-op\n(q_array_invalidate never executes, and resume_queues already guards\nall queue_ids dereferences behind a NULL check). Return ERR_PTR(-EINVAL)\nonly when num_queues is non-zero and the pointer is absent; both callers\nalready propagate IS_ERR() returns correctly to userspace.\n\n(cherry picked from commit f165a82cdf503884bb1797771c61b2fcc72113d4)"
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