CVE-2024-38597

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: eth: sungem: elimine .ndo_poll_controller para evitar interbloqueos Erhard informa advertencias de netpoll desde sungem: netpoll_send_skb_on_dev(): eth0 habilitó interrupciones en la encuesta (gem_start_xmit+0x0/0x398) ADVERTENCIA: CPU: 1 PID: 1 en net/core/netpoll.c:370 netpoll_send_skb+0x1fc/0x20c gem_poll_controller() desactiva las interrupciones, que pueden dormir. No podemos dormir en netpoll, tiene las interrupciones desactivadas por completo. Curiosamente, gem_poll_controller() ni siquiera sondea las finalizaciones y, en cambio, actúa como si se hubiera disparado una interrupción, por lo que simplemente programa NAPI y sale. Nada de esto ha sido necesario durante años, ya que netpoll invoca directamente a NAPI.

In the Linux kernel, the following vulnerability has been resolved: eth: sungem: remove .ndo_poll_controller to avoid deadlocks Erhard reports netpoll warnings from sungem: netpoll_send_skb_on_dev(): eth0 enabled interrupts in poll (gem_start_xmit+0x0/0x398) WARNING: CPU: 1 PID: 1 at net/core/netpoll.c:370 netpoll_send_skb+0x1fc/0x20c gem_poll_controller() disables interrupts, which may sleep. We can't sleep in netpoll, it has interrupts disabled completely. Strangely, gem_poll_controller() doesn't even poll the completions, and instead acts as if an interrupt has fired so it just schedules NAPI and exits. None of this has been necessary for years, since netpoll invokes NAPI directly.

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. Gui-Dong Han discovered that the software RAID driver in the Linux kernel contained a race condition, leading to an integer overflow vulnerability. A privileged attacker could possibly use this to cause a denial of service.