Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2025-68348

Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
24/12/2025
Última modificación:
29/12/2025

Descripción

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> block: fix memory leak in __blkdev_issue_zero_pages<br /> <br /> Move the fatal signal check before bio_alloc() to prevent a memory<br /> leak when BLKDEV_ZERO_KILLABLE is set and a fatal signal is pending.<br /> <br /> Previously, the bio was allocated before checking for a fatal signal.<br /> If a signal was pending, the code would break out of the loop without<br /> freeing or chaining the just-allocated bio, causing a memory leak.<br /> <br /> This matches the pattern already used in __blkdev_issue_write_zeroes()<br /> where the signal check precedes the allocation.

Impacto