CVE-2023-52600

En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: jfs: corrige uaf en jfs_evict_inode Cuando falla la ejecución de diMount(ipimap), se puede acceder al objeto ipimap que se ha liberado en diFreeSpecial(). La liberación asincrónica de ipimap ocurre cuando rcu_core() llama a jfs_free_node(). Por lo tanto, cuando falla diMount(ipimap), sbi->ipimap no debe inicializarse como ipimap.

In the Linux kernel, the following vulnerability has been resolved: jfs: fix uaf in jfs_evict_inode When the execution of diMount(ipimap) fails, the object ipimap that has been released may be accessed in diFreeSpecial(). Asynchronous ipimap release occurs when rcu_core() calls jfs_free_node(). Therefore, when diMount(ipimap) fails, sbi->ipimap should not be initialized as ipimap.

It was discovered that a race condition existed in the instruction emulator of the Linux kernel on Arm 64-bit systems. A local attacker could use this to cause a denial of service. Wei Chen discovered that a race condition existed in the TIPC protocol implementation in the Linux kernel, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service.