CVE-2026-31407
Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
06/04/2026
Última modificación:
27/04/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
netfilter: conntrack: add missing netlink policy validations<br />
<br />
Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink.<br />
<br />
These attributes are used by the kernel without any validation.<br />
Extend the netlink policies accordingly.<br />
<br />
Quoting the reporter:<br />
nlattr_to_sctp() assigns the user-supplied CTA_PROTOINFO_SCTP_STATE<br />
value directly to ct->proto.sctp.state without checking that it is<br />
within the valid range. [..]<br />
<br />
and: ... with exp->dir = 100, the access at<br />
ct->master->tuplehash[100] reads 5600 bytes past the start of a<br />
320-byte nf_conn object, causing a slab-out-of-bounds read confirmed by<br />
UBSAN.
Impacto
Puntuación base 3.x
7.10
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/0fbae1e74493d5a160a70c51aeba035d8266ea7d
- https://git.kernel.org/stable/c/67c53c1978cef3c504237275e39c857e2f6af56e
- https://git.kernel.org/stable/c/9174d28f3f15d8c4962f5980c0be167633880443
- https://git.kernel.org/stable/c/c5e918390002edf0cff80a0e7ce1f86f16a9507c
- https://git.kernel.org/stable/c/f900e1d77ee0ef87bfb5ab3fe60f0b3d8ad5ba05



