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

Moderate

Race condition vulnerabilities were found in the Linux kernel's SCSI error handler wake-up logic. Memory ordering issues in scsi_dec_host_busy() and ordering problems in scsi_eh_inc_host_failed() can cause the SCSI error handler to never wake up when command completions race against each other. This leaves I/O stuck indefinitely as the error recovery state cannot advance.

CWE-821 - Incorrect Synchronization

A flaw was found in the Linux kernel's Asynchronous Transfer Mode (ATM) networking component. A local attacker, by acting as a malicious signaling daemon, could send a specially crafted message containing an unvalidated pointer. This unvalidated pointer would be directly used by the kernel, leading to the dereference of an arbitrary memory address. The consequence is a system crash, resulting in a Denial of Service (DoS).

CWE-822 - Untrusted Pointer Dereference

A flaw was found in the Linux kernel's cryptographic coprocessor (CCP) driver. When processing AF_ALG rfc3686-ctr-aes-ccp requests, the ccp_aes_complete() function attempts to restore more data than the allocated buffer for the Initialization Vector (IV) can hold. This leads to a buffer overrun, which can result in memory corruption within the kernel.

CWE-805 - Buffer Access with Incorrect Length Value