CVE-2024-26950

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: wireguard: netlink: acceda al dispositivo a través de ctx en lugar de peer. el commit anterior solucionó un error que provocaba que se desreferenciara un dispositivo NULL peer->. En realidad, es más fácil y rápido en cuanto a rendimiento obtener el dispositivo desde ctx->wg. Esto también tiene más sentido semánticamente, ya que ctx->wg->peer_allowedips.seq se compara con ctx->allowedips_seq, basándose ambos en ctx. Esto también actúa como una defensa en profundidad contra los pares liberados.

In the Linux kernel, the following vulnerability has been resolved: wireguard: netlink: access device through ctx instead of peer The previous commit fixed a bug that led to a NULL peer->device being dereferenced. It's actually easier and faster performance-wise to instead get the device from ctx->wg. This semantically makes more sense too, since ctx->wg->peer_allowedips.seq is compared with ctx->allowedips_seq, basing them both in ctx. This also acts as a defence in depth provision against freed peers.

Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not properly handle certain error conditions, leading to a NULL pointer dereference. A local attacker could possibly trigger this vulnerability to cause a denial of service. Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service.