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

CVE-2026-63919

Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
19/07/2026
Última modificación:
27/07/2026

Descripción

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> xfrm: input: hold netns during deferred transport reinjection<br /> <br /> Transport-mode reinjection stores a struct net pointer in skb-&gt;cb and<br /> uses it later from xfrm_trans_reinject(). That pointer must stay valid<br /> until the deferred callback runs.<br /> <br /> Take a netns reference when queueing deferred reinjection work and drop<br /> it after the callback completes. Use maybe_get_net() so the queueing<br /> path does not revive a namespace that is already being torn down.<br /> <br /> This keeps the existing workqueue design and fixes the netns lifetime<br /> handling in one place for all users of xfrm_trans_queue_net().