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CVE-2026-23202

Estado: AnalizadaMedia (5.5)—

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

spi: tegra210-quad: Protect curr_xfer in tegra_qspi_combined_seq_xfer

The curr_xfer field is read by the IRQ handler without holding the lock to check if a transfer is in progress. When clearing curr_xfer in the combined sequence transfer loop, protect it with the spinlock to prevent a race with the interrupt handler.

Protect the curr_xfer clearing at the exit path of tegra_qspi_combined_seq_xfer() with the spinlock to prevent a race with the interrupt handler that reads this field.

Without this protection, the IRQ handler could read a partially updated curr_xfer value, leading to NULL pointer dereference or use-after-free.

CVSS

Probabilidad de explotación (EPSS)

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

Referencias

JSON original (NVD)

Mostrar
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: tegra210-quad: Protect curr_xfer in tegra_qspi_combined_seq_xfer\n\nThe curr_xfer field is read by the IRQ handler without holding the lock\nto check if a transfer is in progress. When clearing curr_xfer in the\ncombined sequence transfer loop, protect it with the spinlock to prevent\na race with the interrupt handler.\n\nProtect the curr_xfer clearing at the exit path of\ntegra_qspi_combined_seq_xfer() with the spinlock to prevent a race\nwith the interrupt handler that reads this field.\n\nWithout this protection, the IRQ handler could read a partially updated\ncurr_xfer value, leading to NULL pointer dereference or use-after-free."
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      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nspi: tegra210-quad: Proteger curr_xfer en tegra_qspi_combined_seq_xfer\n\nEl campo curr_xfer es leído por el manejador IRQ sin mantener el bloqueo para verificar si una transferencia está en curso. Al limpiar curr_xfer en el bucle de transferencia de secuencia combinada, protegerlo con el spinlock para evitar una condición de carrera con el manejador de interrupciones.\n\nProteger la limpieza de curr_xfer en la ruta de salida de tegra_qspi_combined_seq_xfer() con el spinlock para evitar una condición de carrera con el manejador de interrupciones que lee este campo.\n\nSin esta protección, el manejador IRQ podría leer un valor curr_xfer parcialmente actualizado, lo que llevaría a una desreferencia de puntero NULL o uso después de liberación."
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