Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Important

A flaw was found in the Linux kernel's accel/ivpu component. A local attacker could exploit a signed integer truncation vulnerability in the Inter-Process Communication (IPC) receive path. This flaw occurs when a firmware-supplied data size is incorrectly converted, leading to an oversized memory copy operation that can overflow a kernel stack buffer. Successful exploitation could result in a denial of service through a kernel crash and potentially lead to privilege escalation.

CWE-787 - Out-of-bounds Write

A flaw was found in the Linux kernel's networking scheduler. A race condition, which is a problem that occurs when multiple operations try to access the same resource at the same time, exists when network filter operations are run concurrently. This can lead to a Use-After-Free (UAF) vulnerability, where the system attempts to use memory that has already been released. This could potentially allow an attacker to cause system instability or execute arbitrary code.

CWE-364 - Signal Handler Race Condition

A flaw was found in the Linux kernel's iSCSI (Internet Small Computer System Interface) target functionality. This vulnerability, a heap overrun, occurs because the iscsi_encode_text_output() function does not properly check buffer capacity when processing login requests. A remote attacker could exploit this by sending a specially crafted login request with numerous key-value pairs, leading to a memory corruption issue and potentially a denial of service (DoS) on the system.

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')