CVE-2026-63912
Gravedad CVSS v3.1:
CRÍTICA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
19/07/2026
Última modificación:
20/07/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
xfrm: esp: restore combined single-frag length gate<br />
<br />
The ESP out-of-place fast path appends the trailer in esp_output_head()<br />
before esp_output_tail() allocates the destination page frag. The<br />
head-side gate currently checks skb->data_len and tailen separately, but<br />
the tail code allocates a single destination frag from the combined<br />
post-trailer skb->data_len.<br />
<br />
Reject the page-frag fast path when the combined aligned length exceeds a<br />
page. Otherwise skb_page_frag_refill() may fall back to a single page while<br />
the destination sg still spans the combined skb->data_len.<br />
<br />
Restore this combined-length page gate for both IPv4 and IPv6.
Impacto
Puntuación base 3.x
9.80
Gravedad 3.x
CRÍTICA
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/322e48187e0245ab2fff6fec2220b0cae677dbec
- https://git.kernel.org/stable/c/36519e3d941fc99d3b52c134dbaf311f987a4708
- https://git.kernel.org/stable/c/566295735530ee513326049b0540f32ec050bf2e
- https://git.kernel.org/stable/c/5d7ab86e2b6bc23054616bf6ac562013bf60af8c
- https://git.kernel.org/stable/c/65f3b3fc2347b89fe21db1e92c7681368415f095
- https://git.kernel.org/stable/c/b84091ceddc9f133229dceab3ccc930bf27f9cba
- https://git.kernel.org/stable/c/c093468aea8277f77272a4f199b2e15e19cabb59
- https://git.kernel.org/stable/c/dfa0d7b0ff1eb6b2c416b8fdb9b4f2cefba57a40



