CVE-2025-39963
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix incorrect io_kiocb reference in io_link_skb In io_link_skb function, there is a bug where prev_notif is incorrectly assigned using 'nd' instead of 'prev_nd'. This causes the context validation check to compare the current notification with itself instead of comparing it with the previous notification. Fix by using the correct prev_nd parameter when obtaining prev_notif.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-10-09 13:15:32.517000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: fix incorrect io_kiocb reference in io_link_skb\n\nIn io_link_skb function, there is a bug where prev_notif is incorrectly\nassigned using 'nd' instead of 'prev_nd'. This causes the context\nvalidation check to compare the current notification with itself instead\nof comparing it with the previous notification.\n\nFix by using the correct prev_nd parameter when obtaining prev_notif."
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"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nio_uring: corrección de referencia incorrecta a io_kiocb en io_link_skb\n\nEn la función io_link_skb, existe un error donde prev_notif se asigna incorrectamente usando 'nd' en lugar de 'prev_nd'. Esto provoca que la comprobación de validación de contexto compare la notificación actual consigo misma en lugar de compararla con la notificación anterior.\n\nSe corrige usando el parámetro correcto prev_nd al obtener prev_notif."
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