CVE-2023-7192

Se encontró un problema de pérdida de memoria en ctnetlink_create_conntrack en net/netfilter/nf_conntrack_netlink.c en el kernel de Linux. Este problema puede permitir que un atacante local con privilegios CAP_NET_ADMIN provoque un ataque de denegación de servicio (DoS) debido a un desbordamiento de recuento.

Xingyuan Mo discovered that the netfilter subsystem in the Linux kernel did not properly handle inactive elements in its PIPAPO data structure, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. It was discovered that the IGMP protocol implementation in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. Various other issues were also addressed.