CVE-2026-64116
Gravedad CVSS v3.1:
ALTA
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 />
ipv6: ioam: add NULL check for idev in ipv6_hop_ioam()<br />
<br />
Reported by Sashiko:<br />
<br />
The function ipv6_hop_ioam() accesses<br />
__in6_dev_get(skb->dev)->cnf.ioam6_enabled without validating the returned<br />
idev pointer. Because addrconf_ifdown() can concurrently clear dev->ip6_ptr<br />
via RCU, __in6_dev_get() can return NULL during interface teardown, which<br />
could cause a NULL pointer dereference when processing an IOAM Hop-by-Hop<br />
option.<br />
<br />
Let&#39;s add a check and use SKB_DROP_REASON_IPV6DISABLED accordingly.
Impacto
Puntuación base 3.x
7.50
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/09cbfd4b81ae90963dadb1de99b63b702e73290a
- https://git.kernel.org/stable/c/1dca7e491f070ac49b3d934f16ee953a53b37f38
- https://git.kernel.org/stable/c/902daac307eb7e1955ce05b071950f3cba88c963
- https://git.kernel.org/stable/c/abdd03229414b5a52943b65a60f34b84cea5ac59
- https://git.kernel.org/stable/c/c7e8971abd70e9d022f1c251ba2508f8dc7f2db8
- https://git.kernel.org/stable/c/cf75eb6617042c8cff6112daeed7791809fc9dd2
- https://git.kernel.org/stable/c/d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9



