CVE-2024-27396

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: gtp: corrige Use-After-Free en gtp_dellink Dado que call_rcu, que se llama en el recorrido hlist_for_each_entry_rcu de gtp_dellink, no forma parte de la sección crítica de lectura de RCU, es posible que el período de gracia de RCU pasará durante el recorrido y la clave quedará libre. Para evitar esto, se debe cambiar a hlist_for_each_entry_safe.

In the Linux kernel, the following vulnerability has been resolved: net: gtp: Fix Use-After-Free in gtp_dellink Since call_rcu, which is called in the hlist_for_each_entry_rcu traversal of gtp_dellink, is not part of the RCU read critical section, it is possible that the RCU grace period will pass during the traversal and the key will be free. To prevent this, it should be changed to hlist_for_each_entry_safe.

Benedict Schlüter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde discovered that an untrusted hypervisor could inject malicious #VC interrupts and compromise the security guarantees of AMD SEV-SNP. This flaw is known as WeSee. A local attacker in control of the hypervisor could use this to expose sensitive information or possibly execute arbitrary code in the trusted execution environment. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.