CVE-2022-48658 mm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context.

In the Linux kernel, the following vulnerability has been resolved: mm: slub: fix flushcpuslab/freeslab invocations in task context. Commit 5a836bf6b09f "mm: slub: move flushcpuslab invocations freeslab invocations out of IRQ context" moved all flushcpuslab invocations to the global workqueue to...

kernel: io_uring/rw: defer fsnotify calls to task context

A locking context violation was found in the Linux kernel's iouring subsystem. The fsnotify calls were being made directly from kiocb completion context, which can execute in soft or hard IRQ context. This causes lockdep warnings when fsnotify attempts memory allocation with GFPKERNEL flags, whic...

CVE-2023-5563

The SJA1000 CAN controller driver backend automatically attempt to recover from a bus-off event when built with CONFIGCANAUTOBUSOFFRECOVERY=y. This results in calling ksleep in IRQ context, causing a fatal exception...

Code injection

The SJA1000 CAN controller driver backend automatically attempt to recover from a bus-off event when built with CONFIGCANAUTOBUSOFFRECOVERY=y. This results in calling ksleep in IRQ context, causing a fatal exception...

CVE-2023-5563

CVE-2023-5563 affects Zephyr RTOS, specifically the SJA1000 CAN controller driver backend. When built with CONFIG_CAN_AUTO_BUS_OFF_RECOVERY=y, the driver attempts to recover from a bus-off event by calling k_sleep() in IRQ context, which leads to a fatal exception. The linked documents confirm th...